https://www.patsnap.com/resources/blog/rd-blog/roller-compaction-and-dry-granulation-patent-landscape/ · Patsnap · data cut-off 2026-07-31 · downloaded from the live page
Patent Landscape · Powder Handling & Granulation
Roller compaction and dry granulation patents: leaders, filing trends and white space
  • 44.7% concentration. The top 5 assignees alone account for 182 of the 407 records in scope, and the top 10 combined reach 63.6% — a field with a narrow set of entrenched filers.
  • +325% filing growth. Filings rose from 4 in 2021 to 17 in 2024, the last year the dataset treats as complete, showing renewed activity after a quieter early-2020s stretch.
  • Pharma-heavy, but not exclusively. A61K medicinal preparations touch 58.7% of records, yet B22F powder metallurgy, B29C plastics shaping and B33Y additive manufacturing each carry a meaningful minority share — signs of the technique migrating beyond tablets.
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407
Published Records
45%
Top-5 Share of All Records
+325%
Filing Growth 2021→2024
US
Leading Jurisdiction

Filing growth compares 2021 (4 records) with 2024 (17) — a three-year span. 2024 is the most recent year we treat as complete: publication lags filing by roughly 18 months, so 2025 onwards are still filling in and any growth rate that ends there would understate the field. Top-5 share is the combined record count of the five largest assignees divided by all 407 records in scope (CR5), not by the ranked leaders only.

Published byPatsnap Research··7 min readSourced from Patsnap Eureka
Overview

What the roller compaction and dry granulation patent record shows

Roller compaction and dry granulation patents cluster around a narrow set of process control parameters: ribbon density, roll gap control, nip angle, fines recycle and granule strength. These are the levers that separate a workable continuous manufacturing line from one that jams, segregates, or produces out-of-spec granules, and the claim language in this dataset tracks them closely. The corpus spans 407 published records filed or published between 2015 and mid-2026, drawn from a search that pairs the core processes with their governing process parameters.

Filing activity is concentrated in pharmaceutical formulation, but the underlying compaction and milling mechanics also show up in powder metallurgy, plastics shaping and additive manufacturing filings — a reminder that the physical problem of turning loose powder into dense, flowable granules is shared across industries even where the claim language and regulatory context differ sharply.

Filing activity and technology composition, 2015–2026
  1. 1GLAXO GROUP LTD65
  2. 2TESARO INC38
  3. 3ASTRAZENECA AB36
  4. 4CELGENE CORP22
  5. 5OMNIGEN RESEARCH LLC21
  6. 6FUJIMI INCORPORATED17
  7. 7LES LAB SERVIER SA15
  8. 8AVALO THERAPEUTICS INC15
  9. 9MERCK SHARP & DOHME CORP15
  10. 10STEERLIFE INDIA PTE LTD15
Source: Patsnap Eureka. Assignee ranking and totals. Derived from a Patsnap search on Roller Compaction and Dry Granulation covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
The Data

Filing trends and technology composition

The figures below come directly from the 407 records in scope and the 98-company assignee ranking the dataset returns in full.

Filing trend: recovery after a mid-decade lull

Annual filings peaked at 41 in 2018, fell through the early 2020s to a low of 4 in 2021, then climbed back to 17 by 2024 — a +325% increase over that three-year span. 2025 and 2026 figures are still filling in as publication lags filing by roughly 18 months, so the most recent two years should not be read as a slowdown.

Filing trend: recovery after a mid-decade lull01325385035201741201841201920202021202220232024202532026Most recent year is partial — publication lag means later filings are not yet visible.

Technology composition: medicinal preparations dominate, but not alone

A61K (medicinal preparations) appears on 58.7% of the 407 records and A61P (therapeutic activity) on 30.5%, confirming the pharmaceutical center of gravity. Smaller but non-trivial shares in B01J, A23K, B22F, B29C and B33Y point to compaction and granulation claims reaching into catalysis supports, animal feed, powder metallurgy, plastics and additive manufacturing feedstock — each a distinct filing context worth checking separately before assuming freedom to operate.

Technology composition: medicinal preparations dominate, but not aloneA61K · Medicinal preparations23958.7%A61P · Therapeutic activity of compou…12430.5%C07D · Heterocyclic compounds4310.6%B01J · Chemical/physical processes & …276.6%A23K · Animal feed204.9%B22F · Powder metallurgy174.2%B29C · Shaping of plastics163.9%B33Y · Additive manufacturing (3D pri…153.7%Other20650.6%

Shares are the percentage of the 407 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.

Source: Patsnap Eureka. Filing trend and technology composition. Derived from a Patsnap search on Roller Compaction and Dry Granulation covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.

Go deeper on Roller Compaction and Dry Granulation with Eureka

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Key Patents

Representative and most-cited filings

Representative filing
US20050075335A12005-04-07

Pharmaceutical composition via dry granulation — Glaxo Group Limited, 2005

GLAXO GROUP LIMITED

The filing covers a process for preparing a pharmaceutical composition combining piboserod or a pharmaceutically acceptable salt with excipients by forming the active into granules through a dry granulation process, preferably roller compaction followed by milling to a suitable particle size, producing granules of increased particle size and/or compaction relative to the untreated active.Filed by GLAXO GROUP LIMITED, published 2005-04-07 as US20050075335A1.

US20050075335A1 — patent drawing 1US20050075335A1 — patent drawing 2
View full record
Most-cited records in the dataset
#Publication no.Patent titleCitations
1US20040192690A1Novel formulations and method of treatment71
2WO2001060842A2PROCESS FOR MAKING GRANULATED N-[N-(3,3-DIMETHYLBUTYL)-L- alpha -ASPARTYL]-L-PHENYLALANINE 1-METHYL ESTER45
3US20110135739A1Oral Formulations of a Hedgehog Pathway Inhibitor43
4US20080087044A1Selective batching for boron-containing glasses42
5US6579953B1Application of water-soluble or water-dispersible polymerizates which contain poly-ether and which are used a…41
6US20080039621A1Low-substituted hydroxypropylcellulose powder and method for producing the same36
7US20020001652A1Process for making granulated N-[N- (3, 3-dimethylbutyl) -L-alpha -aspartyl] -L- phenylalanine 1-methyl ester36
8US20180369909A1Additive manufacturing material for powder lamination manufacturing35
9WO2011057222A1Oral formulations of a hedgehog pathway inhibitor29
10US20080089853A1Amphoteric Ethyl Methacrylate Copolymers and Use Thereof29

Citation counts reflect influence inside this searched corpus and skew toward older filings; they are not a measure of current commercial relevance.

Each row carries its publication number; clicking a row searches Eureka by that number.

Source: Patsnap Eureka. Citation counts and representative records. Derived from a Patsnap search on Roller Compaction and Dry Granulation covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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Insights

What the numbers mean for a filing or freedom-to-operate decision

Three patterns stand out once the ranking, trend and classification data are read together.

Concentration
44.7% / top 5
share of all 407 records

A small group holds nearly half the field

The top 5 assignees account for 182 of the 407 records in scope, and the top 10 extend that to 63.6%. That leaves a long tail across the remaining ranked companies, most holding only a handful of families — the classic signature of a technique with a few dominant formulators surrounded by narrower, opportunistic filers.

Source: assignee ranking, 407 records
Momentum
4 → 17
filings, 2021 to 2024

Renewed filing activity after a mid-decade dip

After the 2018 peak of 41 filings, annual counts declined into the early 2020s before rebounding to 17 by 2024, a +325% rise over three years. That recovery suggests renewed investment in continuous manufacturing and dry granulation process control rather than a mature, settled field.

Source: filing trend, 2015-2026
Scope
58.7% A61K
of 407 records

Pharma dominant, but adjacent classes are active too

Medicinal preparations claims dominate, yet B22F, B29C and B33Y each appear on a meaningful minority of records. Teams working outside pharma formulation should not assume the prior art is thin just because most filers are drugmakers.

Source: IPC composition, 407 records
Eureka AI Agent
Looking for what nobody has claimed yet?

Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to roller compaction and dry granulation, with the prior art for and against each one.

Find the white space →
Source: Patsnap Eureka. Co-assignee relationships and derived observations. Derived from a Patsnap search on Roller Compaction and Dry Granulation covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
Players

Who is filing, and where activity has gone quiet

The leader in this ranking holds 65 records against a fifth-place figure of 21 and a tenth-place figure of 15 — a steep drop-off that defines the competitive shape of the field.

Leader
65 records
vs 21 at fifth place

One assignee well ahead of the pack

The top-ranked company's 65 records sit far above the fifth-place figure of 21, a gap wide enough that displacing the leader on breadth of filings alone is unrealistic; the more useful question is which specific claims within that portfolio are actually load-bearing.

Source: assignee ranking
Momentum
Mostly flat
latest-year filings

Recent-year activity has cooled among named leaders

Several of the most active historical assignees show zero filings in the latest tracked year, and one shows a -50% year-on-year change. Given the ~18-month publication lag, this is as likely to reflect filings still working through the pipeline as a genuine pullback.

Source: recent-year momentum by assignee
Collaboration
10 pairs
co-assignee pairs

A handful of recurring co-filing relationships

Ten co-assignee pairs appear in the dataset, with the strongest pairings recurring across multiple records. That points to established formulation partnerships rather than one-off joint filings, and it is worth checking whether a target company's exposure runs through one of these pairs before approaching either party alone.

Source: co-assignee pairs
🔍
Under-claimed sub-areas worth checking before you file
These narrower branches show thinner activity relative to the core roller compaction claims and are worth a dedicated search before assuming the space is clear.
Roll surface sealing designFines recycle loop controlNip angle sensing and feedbackRibbon density in-line monitoringContinuous granulation for animal feedGranule strength for 3D-printed feedstock
Rank all filers by momentum →
Recent-year filing momentum by assignee
AssigneeRecent yearYoY
AstraZeneca AB1-50%
Glaxo Group Limited0—
Tesaro Inc0—
Celgene Corp0—
Merck Sharp & Dohme Corp0—
Agios Pharmaceuticals Inc0—
Omnigen Research LLC0—
Fujimi Incorporated0—
Source: Patsnap Eureka. Assignee-level momentum. Derived from a Patsnap search on Roller Compaction and Dry Granulation covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
What's Next

Where to take this analysis

The dataset points to specific next steps depending on whether the goal is freedom to operate, licensing, or new filing strategy.

Map claim boundaries on the top holders

With 44.7% of records held by five assignees, a claim-by-claim review of their granted independent claims is a faster path to a freedom-to-operate view than a broad keyword search.

Explore assignee claims in Eureka

Test the under-claimed branches

Roll surface sealing, fines recycle control and in-line ribbon density monitoring show thinner filing density than the core process claims and merit a dedicated novelty search before drafting.

Run a white space search in Eureka

Track the post-2024 filing pipeline

Because publication lags filing by roughly 18 months, the 2025-2026 records in this dataset are incomplete. Revisit the trend in two to three quarters to see whether the 2021-2024 growth continued.

Set up monitoring in Eureka
Source: Patsnap Eureka. Forward-looking reading of the same dataset. Derived from a Patsnap search on Roller Compaction and Dry Granulation covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
FAQ

Common questions about roller compaction and dry granulation patents

Answers are grounded in the same dataset. Derived from a Patsnap search on Roller Compaction and Dry Granulation covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP

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Go past this page: query the whole roller compaction and dry granulation corpus yourself, in your own scope.
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Disclaimer. This page is generated from Patsnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.

Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.

Nothing on this page constitutes an exhaustive prior-art, novelty, freedom-to-operate, or validity search, nor does it constitute legal, financial, investment, or professional advice, and it should not be relied upon as such. Any patent, commercial, or strategic decision should be verified independently and reviewed with qualified patent, legal, and domain professionals. Patsnap makes no warranties, express or implied, as to the accuracy, completeness, or fitness for any particular purpose of the information presented.

Machine translation. Assignee and organisation names originally recorded in Chinese, Japanese or Korean have been rendered into English by an AI translation step so that the tables stay readable. These renderings are best-effort and may not match a company's registered English name; the original name is what the underlying patent record carries, and it is what any Eureka query launched from this page uses.

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