Textile Dyeing Patents: Who Leads, Where the Gaps Are 2026
- Filing has cooled since its 2018 peak. 20 families filed that year against 12 in 2017 and only 9 at the 2022 midpoint — this is a field with claim space already staked out, not one still accelerating.
- China dominates the filing venue. 131 of the tracked filings went through the China receiving office, more than six times the next-largest venue (United States, 19), which tells you where enforcement and freedom-to-operate checks matter most.
- Dyeing itself, not adjacent chemistry, carries the claim density. D06P (dyeing & printing) covers 183 of 202 records, while mechanical finishing (D06C) and heterocyclic dye chemistry (C07D, C07F) sit in single digits — a sign of where claims are thin.
What this landscape covers
This dataset tracks 202 patent families filed between 2015 and mid-2026 that combine textile dyeing or finishing process claims with specific technical hooks: color fastness, effluent reduction, supercritical CO2 dyeing, functional finish, or levelness. The IPC scope spans D06P1 (dyeing and printing textiles), D06M15 (chemical treatment of textiles) and D06B3 (textile wet treatment), which keeps the corpus centred on process claims rather than pure dye-molecule chemistry.
Because publication typically lags filing by roughly 18 months, the 2025 and 2026 figures in any trend line understate actual filing activity for those years. Family-level counts are used throughout in preference to raw document counts, since a single filing strategy that spans several jurisdictions would otherwise be counted multiple times and distort the ranking.
Filing trend and technology composition
Two views of the same 202-family corpus: how filing volume has moved year over year, and how those filings distribute across the eight IPC subclasses in scope.
A peak already behind it
Filings rose from 12 in 2017 to a peak of 20 in 2018, then eased back toward 9 by the 2022 midpoint, with 3 recorded so far in the partial 2026 year. Read this as a maturing filing curve rather than an emerging one — the busiest period for staking new claims has likely already passed, though the undercount in the most recent years means the true 2025–2026 trajectory is not yet fully visible.
Dyeing process claims dominate
D06P (dyeing and printing) accounts for 183 of 202 records, making it the anchor classification for nearly every filing in scope. C09B (organic dyes and pigments), D06B (wet treatment) and D06M (chemical treatment) each sit in the low thirties, while D06C (mechanical finishing) and the heterocyclic/organometallic chemistry codes (C07D, C07F) register only single-digit counts — the clearest indicator of where claim density is thin.
Shares are the percentage of the 202 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Textile Dyeing and Finishing Processes with Eureka
This page is one run against one query. Ask Eureka your own question about textile dyeing and finishing processes and every answer comes back with the patent numbers behind it.
Try EurekaThe most-cited records in this corpus
EP3530792B1 — waterless dyeing device and process for coil yarn
Filed by Qingdao Jifa Group, this patent covers a device and method for waterless dyeing of coil yarn (spulengarn) and the resulting product, granted with an effective date of 2020-11-11. It sits squarely inside the waterless-dyeing search term used to build this dataset and represents one of the more mechanically specific claims in the corpus, tying process steps to a defined apparatus rather than to a dye chemistry alone.Original filing text is in German; claim scope described here is based on the English-language abstract fields.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US5846265A | Closed-loop textile dyeing process utilizing real-time metered dosing of dyes and chemicals | 62 |
| 2 | CN101368341A | 天然植物染料纺织品印染工艺 | 34 |
| 3 | CN101082154A | 聚乳酸纤维/棉混纺梭织布的染色工艺 | 30 |
| 4 | US4602916A | Dye composition and method of use thereof for coloring thermoplastic articles | 28 |
| 5 | CN104087019A | 一种藏青色或黑色分散染料组合物 | 22 |
| 6 | US9506187B2 | Textile dyeing using nanocellulosic fibers | 20 |
| 7 | US20160010275A1 | Textile dyeing using nanocellulosic fibers | 18 |
| 8 | WO2001044563A1 | Enzymatic method for textile dyeing | 15 |
| 9 | US5913904A | Jig-type textile finishing apparatus | 14 |
| 10 | CN104562791A | 一种涤纶纤维人造革基布的无水化染色方法及其生产线 | 13 |
Citation counts reflect influence within the searched corpus and skew toward older filings; they are not a measure of current commercial relevance.
Patent titles are shown in the language they were filed in, not translated, so that each record stays verifiable against the original filing — a translated title will not match in Eureka or in any national register. Each row carries its publication number; clicking a row searches Eureka by that number.
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Three patterns stand out once filing volume, classification spread and citation concentration are read together.
The busiest filing window has passed
Filing volume nearly halved between the 2018 peak and the 2022 midpoint. Combined with a partial 2026 count of only 3, this reads as a field where the core process claims were staked earlier in the window rather than one still building toward a peak.
China is the primary filing and litigation venue
China accounts for roughly two-thirds of tracked filings, well ahead of the United States (19), EPO (10), UK (8), WIPO/PCT (8) and Canada (6). Any freedom-to-operate review for manufacturing or export into China should treat this corpus as the primary reference set.
Dyeing process claims crowd out adjacent chemistry
The overwhelming majority of records sit in D06P, the core dyeing and printing classification. Mechanical finishing (D06C, 4 records) and heterocyclic or organometallic dye chemistry (C07D and C07F, 3 each) are comparatively open, suggesting these adjacent branches have not been heavily claimed within this search scope.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to textile dyeing and finishing processes, with the prior art for and against each one.
Who is filing, and where the activity has gone quiet
Co-filing patterns and recent momentum both point to a corpus where several formerly active filers have stopped, rather than one with a rising challenger.
Collaboration is limited and concentrated
Only seven co-assignee pairs appear in the dataset. The strongest is a pairing between two Novozymes entities (5 shared filings), followed by a university-industry pair (Jiangnan University with Penglai Jiaxin Dyestuff Chemical, 2 filings) and an Italian dyehouse-supplier pair (Vebachem and Tintoria di Pollone, 2 filings).
Formerly active filers have gone quiet
Every assignee named in the recent-momentum tracking, including Jiangnan University, Soochow University, Vebachem, and both Novozymes entities, recorded zero filings in the latest tracked year. Jiangnan University shows a -100% year-on-year change, consistent with a broader pullback rather than an isolated case.
A long tail behind the cited leaders
The most-cited records include both an early US closed-loop dyeing process patent and several China-originated dyeing process filings for natural dyes and blended fibres, but the assignee ranking behind these citation leaders is broad rather than concentrated in a handful of firms.
| Assignee | Recent year | YoY |
|---|---|---|
| Jiangnan University | 0 | -100% |
| VEBACHEM SRLS | 0 | — |
| Novozymes North America, Inc. | 0 | — |
| Novozymes A/S | 0 | — |
| Soochow University | 0 | — |
| WILSON ROBERT BUCHANAN | 0 | — |
| Lufeng Textile Dyeing Co., Ltd. | 0 | — |
| Qingdao Jifa Group Co., Ltd. | 0 | — |
Where to take this
The landscape points to a field with settled core claims and a few narrow, still-open branches. Two follow-ups make sense before committing R&D or filing budget.
Run a freedom-to-operate check against the China filing base
With 131 of 202 families filed through the China receiving office, any product or process destined for manufacture or sale there should be checked against this corpus specifically, not just the global picture.
Explore this in Eureka →Test claim drafts against the under-claimed IPC branches
Mechanical finishing, heterocyclic dye chemistry and supercritical CO2 apparatus claims all show single-digit record counts in this scope. A targeted novelty search in these specific branches, rather than the whole D06 family, is the faster route to a defensible position.
Explore this in Eureka →Common questions about textile dyeing and finishing patents
This landscape tracks 202 patent families filed between 2015 and mid-2026 that match a search scope combining textile dyeing and finishing terms with specific technical hooks such as color fastness, effluent reduction, supercritical CO2 dyeing and functional finish. The true figure across all classification schemes and looser search terms would be higher, since this scope is deliberately narrowed to D06P1, D06M15 and D06B3 IPC codes. Filing peaked in 2018 at 20 families and has since eased, with the most recent years understated due to normal publication lag.
The most-cited record in this corpus is a US patent on closed-loop dyeing with real-time metered dosing, followed by several China-originated filings covering natural dye processes and blended-fibre dyeing. Recent-year momentum data shows that several previously active filers, including university research groups and enzyme suppliers, recorded no filings in the latest tracked year. This suggests the current landscape has a broad base of moderate filers rather than a single dominant assignee actively expanding its position right now.
China is by far the largest receiving office in this dataset, with 131 of 202 tracked filings, more than six times the next largest venue, the United States, at 19. The European Patent Office, United Kingdom, WIPO/PCT route and Canada each account for single-digit counts. If commercial activity or manufacturing touches China, a filing and clearance strategy there is essential; supplementary coverage in the US or via PCT should be evaluated based on where downstream products are sold or manufactured.
In this dataset, white space shows up as IPC subclasses with unusually low record counts relative to the dominant dyeing classification. Mechanical finishing equipment (D06C), heterocyclic dye synthesis (C07D) and organometallic dye complexes (C07F) each have only 3-4 records against 183 for core dyeing process claims (D06P). This does not guarantee the technology is unclaimed everywhere, since the search scope itself narrows what is captured, but it does indicate these branches carry less claim density within this specific corpus.
Based on this dataset, filing activity is flat to declining rather than growing. It rose from 12 families in 2017 to a peak of 20 in 2018, then fell to 9 by the 2022 midpoint, with only 3 recorded so far in the partial 2026 year. Because publication typically lags filing by around 18 months, the most recent one to two years will always look lower than they eventually turn out to be, but the multi-year trend through the reliable years still points downward rather than upward.
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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.