Liquid Crystal Polymers (LCP) Patents: Top Companies & Trends 2026
- Filing has plateaued, not grown. Annual filings peaked at 119 in 2021 and have declined since, with the 2022 midpoint at 99 — this is a mature claim space, not an emerging one.
- The top 5 hold one-fifth of the field. The five leading assignees combine for 519 records, 20.5% of all 2,528 records in scope, while the ranked leaders extend to 100 companies with a long tail below tenth place.
- Electronics claims now rival optical claims. H05K (printed circuits) appears in 20.3% of records, close behind the historically dominant B32B laminate class at 22.5%, reflecting LCP's move into 5G and high-frequency substrates.
What the LCP patent record shows
Liquid crystal polymers sit at the intersection of specialty polymer chemistry and precision manufacturing, prized for dimensional stability, low dielectric loss and thin-wall flow behaviour. The patent record in scope spans 2,528 published records filed against claims touching anisotropy, weld line strength, flatness and adhesion — the practical failure modes that separate a usable LCP compound or film from a laboratory curiosity. Filing activity is not evenly spread: a small set of assignees, largely Japanese materials and electronics majors alongside a handful of global chemical companies, account for a disproportionate share of the record.
Because publication lags filing by roughly 18 months, the most recent filing year in any trend understates real activity; treat the last one or two years as provisional rather than a genuine drop-off.
Filing trends and technology composition
The figures below use patent families as the unit of count, drawn from the same 2,528-record set referenced throughout this page.
A flat-to-declining filing curve since 2021
Filings rose to a peak of 119 in 2021, held near that level through the 2022 midpoint of 99, and have trended down since — consistent with a technology whose core claim space is largely staked out rather than one still being opened up.
Claims cluster in laminates, materials and circuits
B32B (layered products) leads at 22.5% of the 2,528 records, with C09K (materials for miscellaneous applications) at 21.1% and H05K (printed circuits) at 20.3% close behind. Because records can carry multiple IPC classes, these shares sum to well over 100% and should be read as overlapping claim footprints, not a partition of the field.
Shares are the percentage of the 2,528 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Liquid Crystal Polymers (LCP) with Eureka
This page is one run against one query. Ask Eureka your own question about liquid crystal polymers (lcp) and every answer comes back with the patent numbers behind it.
Try EurekaThe most-cited records in this corpus
Liquid crystal polymer film and laminate (US20230041602A1)
The filing targets a liquid crystal polymer film with a low dielectric loss tangent, achieved by controlling filler composition so that the dielectric loss tangent of the filler, or the mass-average value across multiple fillers, stays at or below a specified threshold at 25°C and 10 GHz.Filed by Fujifilm Corporation, published 2023-02-09.
View full filing →| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US5619352A | LCD splay/twist compensator having varying tilt and /or azimuthal angles for improved gray scale performance | 331 |
| 2 | US6905743B1 | Dimensionally stable balloons | 301 |
| 3 | US6284333B1 | Medical devices made from polymer blends containing low melting temperature liquid crystal polymers | 288 |
| 4 | US6242063B1 | Balloons made from liquid crystal polymer blends | 247 |
| 5 | US6643552B2 | Implantable devices having a liquid crystal polymer substrate | 235 |
| 6 | US5073294A | Process of preparing compositions having multiple oriented mesogens | 195 |
| 7 | US5150232A | Active matrix liquid crystal display element and projection type active matrix liquid crystal display device | 178 |
| 8 | US5386306A | Active matrix liquid crystal display element and projection type active matrix liquid crystal display device | 177 |
| 9 | US5275877A | Self reinforced thermoplastic composite laminate | 170 |
| 10 | US6114492A | Process for producing liquid crystal polymer | 168 |
Citation counts favour older filings simply by virtue of having had more time to be cited; treat them as a signal of historical influence rather than of current commercial relevance.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Browse MCP servers →What the numbers mean for a filing decision
Three patterns in the data matter more than the raw counts on their own.
The top of the field is genuinely concentrated
Five assignees combine for 519 of the 2,528 records in scope, and the leader alone holds 192. That is a meaningful share for a field this size, and it means new entrants are filing into a space where a small number of players already hold broad laminate and materials claims.
Growth has already peaked
The filing curve rose to 119 in 2021 and has fallen since, with 2022 sitting at 99. High historical filing density means the core claim space around anisotropy control, weld-line strength and flatness is well occupied — it does not mean the underlying material science is finished.
Electronics claims are catching up with optical ones
B32B laminate claims still lead at 22.5%, but H05K printed-circuit claims sit close behind at 20.3% of records, ahead of the historically strong optical class G02F at 15.1%. That shift tracks LCP's adoption in high-frequency circuit substrates rather than displays.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to liquid crystal polymers (lcp), with the prior art for and against each one.
Who is filing, and who has slowed down
The ranking covers 100 companies returned by the data endpoint — not a curated top-50 or top-100 list, simply the full set the underlying search returns.
One assignee holds a clear lead
The leading assignee's 192 records sit well above the fifth-place figure of 70 and the tenth-place figure of 47, showing a steep drop after the top handful rather than an even spread across the ranked leaders.
Recent-year activity has gone quiet even among leaders
Among the assignees tracked for recent-year momentum, the most active recorded only 1 filing in the latest year, and several long-standing leaders recorded 0. That pattern is consistent with the broader plateau in the filing trend, though the most recent year is always undercounted by publication lag.
Co-filing is limited but not absent
Ten co-assignee pairs appear in the data, with the strongest pairing tied to a chemical-company and materials-company combination. Co-filing is the exception rather than the norm in this field, which suggests most players develop and claim their LCP formulations independently.
| Assignee | Recent year | YoY |
|---|---|---|
| Fujifilm Corporation | 1 | — |
| Sumitomo Chemical Co., Ltd. | 1 | — |
| Kuraray Co., Ltd. | 0 | — |
| Sicpa Holding SA | 0 | — |
| Polyplastics Co., Ltd. | 0 | — |
| Celanese Corporation | 0 | — |
| Nitto Denko Corporation | 0 | — |
| Nippon Petrochemical Co., Ltd. | 0 | — |
Where to take this next
The dataset points to a field with an occupied core and a thinner but real periphery.
Check freedom-to-operate around the top 5
With 20.5% of all 2,528 records held by five assignees, any new formulation or laminate design should be checked against their specific claim scope before development spend commits to a direction.
Run a freedom-to-operate check in Eureka →Watch the electronics-side classes
H05K's rise to 20.3% of records alongside the traditional B32B and C09K clusters suggests high-frequency substrate applications are where new claim activity is most likely to appear next.
Track emerging filings in Eureka →Probe the under-claimed sub-areas
Adhesion promoters, mmWave filler blends and micro-connector weld-line strength show lower filing density than the core laminate and materials classes, and may offer clearer room to file.
Explore white space in Eureka →Common questions about LCP patents
One assignee leads the field with 192 records in this dataset of 2,528 records, well ahead of the fifth-place company at 70 and the tenth-place company at 47. The top five assignees combined hold 519 records, 20.5% of all records in scope, showing a field with a clear leader rather than a flat distribution. Below the top ten, the ranking extends to 100 companies with a long tail of smaller filers, so the leadership gap narrows quickly outside the top handful.
No — filings peaked at 119 in 2021 and have declined since, with the 2022 figure at 99 and a further drop by 2026. This pattern indicates the core claim space around anisotropy control, weld-line strength and dielectric performance is largely staked out rather than still expanding. Because publication lags filing by roughly 18 months, the most recent one or two years in the trend will always look lower than the true filing rate, so a modest recovery in the true numbers cannot be ruled out.
B32B, covering layered products and laminates, leads at 22.5% of the 2,528 records, followed closely by C09K (materials for miscellaneous applications) at 21.1% and H05K (printed circuits and assemblies) at 20.3%. Polymer composition and processing classes C08L and C08J each sit near 17-19%, and optical control class G02F trails at 15.1%. Because a single record can carry several IPC classes, these percentages overlap rather than sum to 100%.
The most-cited records in this corpus include filings on LCD compensator films and on medical balloon and implantable device applications built from liquid crystal polymer blends, several carrying citation counts in the hundreds. High citation counts reflect age and prior influence within this searched corpus more than current commercial relevance, since older filings simply accumulate citations over a longer window. Newer filings, including recent dielectric-loss-focused work, have not had time to reach comparable citation counts.
The densest claim clusters sit in laminates (B32B), general materials (C09K) and printed circuits (H05K), each above 20% of records, which means adjacent and narrower sub-areas carry comparatively fewer filings. Areas such as adhesion promoters for LCP-metal interfaces, weld-line strength in micro-connector geometries, and low-loss dielectric filler blends tuned for mmWave frequencies show lower filing density in this dataset. That does not guarantee those areas are unclaimed, but it does mark them as worth a targeted prior-art search before committing to a filing strategy.
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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.