Silica Aerogel Blanket Patents: Who Leads, Where the Gaps Are 2026
- One assignee dominates the ranked field. with 114 records against a fifth-place count of just 2, leaving a long tail of single- and few-filing entrants.
- Filings have pulled back from their 2018 peak of 48. and the tracked 2021-to-2024 span shows a 67% decline, from 12 to 4 records, on the years the dataset treats as complete.
- Claim activity concentrates in inorganic chemistry, not insulation hardware. C01B covers 92.5% of the 133 records in scope, while pipe- and fitting-specific claims (F16L) sit at just 17.3%.
Filing growth compares 2021 (12 records) with 2024 (4) — 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.
What this landscape covers
Silica aerogel insulation blankets combine a nanoporous silica aerogel with a fiber reinforcement matrix to deliver low thermal conductivity in a flexible, handleable form. The patent activity tracked here spans 133 published records from 2015 to 2026, drawn from filings that describe the blanket composite itself, its binder chemistry, and the processing routes used to control dust shedding, hydrophobicity and compressive recovery. Patent families are the fairer unit for judging real filing volume, since a single invention can generate several published documents across jurisdictions.
The field's most-cited records date to the early 2000s and describe heat-resistant aerogel composites and binder compositions, which still anchor citation counts across the corpus. Because publication lags filing by roughly 18 months, the most recent one or two years in any trend chart will always understate real activity — that lag, not a genuine drop-off, explains why 2025 and 2026 show few records.
Filing trend and technology composition
Two views of the same 133-record dataset: how filing volume has moved year over year, and how those records distribute across IPC subclasses.
Filing trend, 2017-2026
Filings ran from 13 in 2017 to a peak of 48 in 2018, then eased off; the 2021-to-2024 window – the most recent span the dataset treats as complete – fell 67%, from 12 to 4 records. 2025 and 2026 are still filling in under the usual publication lag and should not be read as a continued decline.
IPC subclass composition
C01B (non-metallic elements and inorganic compounds) appears in 92.5% of the 133 records, confirming that most claims sit in the silica chemistry itself rather than in downstream hardware. B01J (34.6%) and F16L (17.3%) trail well behind, and application-adjacent classes such as C09K, C04B, B01D, C02F and C07C each sit under 10%, marking them as thinner, more open ground.
Shares are the percentage of the 133 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Silica Aerogel Insulation Blankets with Eureka
This page is one run against one query. Ask Eureka your own question about silica aerogel insulation blankets and every answer comes back with the patent numbers behind it.
Try EurekaMost-cited and most recent filings
Method for producing hydrophobic silica aerogel blanket, and silica aerogel blanket (US20260091981A1)
The present invention relates to a method for producing a silica aerogel blanket having excellent surface modification efficiency and high hydrophobicity while not containing residual chlorine, and to a silica aerogel blanket produced thereby and not containing residual chlorine.Filed by LG Chem, published 2026-04-02 – the newest record in scope and a marker of where the leading assignee is still investing.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20030215640A1 | Heat resistant aerogel insulation composite, aerogel binder composition, and method for preparing same | 105 |
| 2 | WO2003064025A1 | Heat resistant aerogel insulation composite and method for its preparation; aerogel binder composition and me… | 57 |
| 3 | KR1020180033064A | Silica aerogel blanket for ultra-high temperature, method for preparing the same and method for constructing … | 47 |
| 4 | US20190062167A1 | Silica aerogel blanket for ultra-high temperature, method for producing same, and method for constructing same | 24 |
| 5 | CN1622852A | 耐热气凝胶绝缘复合材料及其制备方法,气凝胶粘合剂组合物及其制备方法 | 21 |
| 6 | EP1787716A1 | Heat resistant aerogel insulation composite and method for its preparation;aerogel binder composition and met… | 16 |
| 7 | US20200216322A1 | Method for producing silica aerogel blanket and apparatus for producing same | 14 |
| 8 | EP3375757A1 | Silica aerogel blanket for ultra-high temperature, manufacturing method thereof, and installation method ther… | 14 |
| 9 | US20220098046A1 | Silica sol, silica aerogel blanket manufactured using same, and method for manufacturing same | 12 |
| 10 | US20190010060A1 | Aerogel blanket for ultra-high temperature, production method thereof, and construction method thereof | 11 |
Citation counts favor older, foundational filings within this searched corpus and should be read as a signal of influence rather than 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 the raw counts are set against each other: where claim density sits, how citations distribute, and how concentrated ownership actually is.
Foundational binder patents still anchor the field
The two most-cited records in the dataset – a heat-resistant aerogel composite and its corresponding binder composition – carry 105 and 57 citations respectively, far ahead of anything filed since. New entrants are still designing around binder chemistry claims that predate most of the current filing wave.
Chemistry claims dominate, hardware claims lag
Almost every record in scope touches C01B inorganic chemistry, but only 17.3% touch F16L pipe and fitting claims. That gap suggests the composite material itself is heavily claimed while integration into specific insulation formats and installation hardware is comparatively open.
Volume has pulled back from its 2018 peak
Filings peaked at 48 in 2018 and the last complete three-year window on record shows a 67% drop, from 12 filings in 2021 to 4 in 2024. Given the publication lag, this reads as a genuine cooling from an earlier filing rush rather than a market that has stopped innovating.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to silica aerogel insulation blankets, with the prior art for and against each one.
Who holds the ranked field
The assignee ranking returned by the dataset covers eight companies and research bodies; it is not a top-50 or top-100 list, so read it as the complete set the data endpoint surfaces.
One assignee holds the great majority of ranked filings
The leading assignee's 114 records dwarf the fifth-place count of 2, which means most of the practical prior art in this space sits with a single filer rather than being spread across competitors.
Everyone else files in single digits
Beyond the leader, the remaining ranked assignees – including materials institutes and individual inventors – each hold only a handful of records, with the fifth-place entrant at just 2. This is a field where a new filer with a differentiated process claim is not competing against a crowded middle tier.
No ranked assignee shows fresh activity in the latest year
Every assignee in the ranking, including the leader, shows zero filings in the most recent year tracked. Given the roughly 18-month publication lag, this is expected rather than a sign that the leader has stepped back – it means the newest filings simply have not surfaced in the record yet.
| Assignee | Recent year | YoY |
|---|---|---|
| LG Chem, Ltd. | 0 | — |
| Cabot Corporation | 0 | — |
| Singapore Polytechnic | 0 | — |
| Swiss Federal Laboratories for Materials Science and Technology (Empa) | 0 | — |
| Taiwan Aerogel Technology Material Development Co., Ltd. | 0 | — |
| DR SAPNA JADHAV | 0 | — |
| DR SANTOSH MANI | 0 | — |
| DR PRADIP SARAWADE | 0 | — |
Where to take this from here
The dataset points to a concentrated core and a thin periphery. The next step is deciding which of those gaps is worth a first filing.
Map the white space before drafting claims
F16L, C09K and C04B all sit under 20% of records despite touching real installation and application problems. A claim built around one of these adjacent branches is less likely to collide with the dominant assignee's chemistry patents.
Explore white space in EurekaTrack the leader's newest filings closely
The most recent record in scope comes from the field's leading assignee and targets hydrophobicity without residual chlorine – a strong signal of where that portfolio is still being extended.
Monitor assignee activity in EurekaCommon questions about this landscape
One assignee holds the large majority of the ranked field, with 114 records compared to a fifth-place count of just 2. That concentration means the practical prior art a new filer needs to search against sits mostly with a single company rather than being distributed across many competitors. The remaining ranked assignees, including research institutes and individual inventors, each hold only a handful of records.
Filing volume peaked at 48 records in 2018 and has since pulled back; the most recent complete three-year window shows a 67% drop, from 12 filings in 2021 to 4 in 2024. Because publication typically lags filing by around 18 months, the very newest years in any dataset understate real activity, so this should be read as a cooling from an earlier filing rush rather than an active decline through 2026. It is not evidence that the underlying technology has stopped attracting investment.
Almost all records, 92.5% of the 133 in scope, carry a C01B classification covering non-metallic elements and inorganic compounds, reflecting how much claim activity sits in the silica chemistry itself. B01J (chemical and physical processes) follows at 34.6%, and F16L (pipes and fittings) trails at 17.3%. Application-specific classes such as wastewater treatment and ceramics each sit under 10%, marking thinner ground.
The gap between chemistry claims and hardware claims is the clearest signal: C01B chemistry appears in over 90% of records while pipe and fitting integration (F16L) appears in under 20%. Classes tied to specific end uses, like water treatment (C02F) and ceramics (C04B), each sit at single-digit percentages of the record base. A first filing aimed at installation formats, surface-treatment methods for dust shedding, or hygrothermal test methodology is less likely to run into the dominant chemistry patents.
The newest record in this dataset, US20260091981A1, published 2026-04-02 by LG Chem, describes a method for producing a hydrophobic silica aerogel blanket without residual chlorine, alongside the blanket itself. It targets surface modification efficiency and hydrophobicity as its stated improvements. Because it comes from the field's leading assignee, it signals that the dominant portfolio is still being actively extended even as overall filing volume has slowed from its 2018 peak.
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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.