Where does Daicel Polymer Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Daicel Polymer Ltd. ranks #15,216 of 49,997 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.

How many patents does Daicel Polymer Ltd. hold?

Daicel Polymer Ltd. holds 19 US utility patents granted between 2015 and 2024, spanning 19 technology areas.

What is Daicel Polymer Ltd.'s Innovation Score?

Daicel Polymer Ltd. has an Innovation Score of 38.5 out of 100 (top 41% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Daicel Polymer Ltd. focus on?

Daicel Polymer Ltd.'s top technology area is C08K (Use of inorganic or non-macromolecular organic substances as compounding ingredients) with 11 patents, ranking #290 of 1,963 assignees active in that subclass. Grants appear in 19 CPC subclasses total.

Is Daicel Polymer Ltd.'s patent grant rate increasing or decreasing?

Daicel Polymer Ltd.'s recent grant velocity is +11% compared to the prior five-year period (grant years, not application filing dates). The company is maintaining or growing its granted-patent output.

What does claim depth mean for Daicel Polymer Ltd.'s patents?

Daicel Polymer Ltd.'s patents average 8.3 claims each. This is an aggregate descriptive count from the grant record; it does not establish claim scope, legal strength, enforceability, or design-around risk.

How is the Daicel Polymer Ltd. patent data sourced?

All patent data comes from USPTO PatentsView, a public research dataset maintained by the United States Patent and Trademark Office covering US granted utility patents from 2015 to 2025.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Daicel Polymer Ltd.

USPTO PatentsView assignee record - 19 granted patents across 19 technology areas, recorded in grant years 2015–2024. Grant-trend analysis is cross-referenced to USPTO Patent Public Search; it does not measure application filings, current R&D, or legal strength. Primary class: C08K (Use of inorganic or non-macromolecular organic substances as compounding ingredients).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Daicel ranks #15,216 of 49,997 tracked US assignees by granted-patent volume, with 19 patents across 19 technology areas.

#15,216
of 49,997 US assignees by volume: Top 41%
by Innovation Score (38.5/100): 8.3
avg claims per patent: +11%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R15216 · Foreign Corporation #15,216 · 19 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-PAR · TYPE-FRNCORP · VEL-UP · BOOK-FULL

GRANTS-MICRO 19 grants
MID-PACK #15,216/49,997
PHOTO-FINISH Corbin Clinical…
CPC-FOCUS C08K · 19 areas
INNOV-THIN 38.5/100
CLAIMS-PAR 8.3 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-UP +11% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Corbin Clinical Resources, LLC (±0 grants)

Instrument codes from this assignee’s USPTO PatentsView grant sheet: volume band, corpus rank, photo-finish peer, lead CPC, Innovation Score, claim depth, assignee type, velocity, and book completeness. Not a USPTO rating of patent strength.

How Daicel’s 38.5 Innovation Score adds up

The same four weighted components behind every Innovation Score on PlainPatent: portfolio volume, grant velocity, technology breadth, and claim depth.

Volume 10.3 pts (27%) Velocity 7.8 pts (20%) Breadth 15.4 pts (40%) Claim depth 5.0 pts (13%)

Qualcomm Incorporated · highest

85
Daicel Polymer · this assignee

39
3D Lighting… · lowest

7

What this shows Daicel's Innovation Score is 38.5/100 (top 41% of the PatentsView-derived corpus). The chart places that score against the nearest Innovation Score peers plus corpus poles, not a reprint of the volume ranking.

Does more volume mean deeper claims for Daicel?

Each dot is one of Daicel’s 8 nearest volume peers (same corpus rank neighbourhood as the chart above), placed by total granted patents (horizontal) against average claims per patent (vertical). Daicel’s own 8.3 claims/patent is at or below the 12.1 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

Daicel vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where Daicel's grants concentrate

Daicel Polymer Ltd. is a focused PatentsView assignee: 19 CPC subclasses with 57.9% of grants classified under C08K (Use of inorganic or non-macromolecular organic substances as compounding ingredients). Peak complete grant year is 2022 (5 grants) versus a trough of 1 in 2016. By volume, Daicel sits between Corbin Clinical Resources, LLC and Deepsea Power & Light LLC.

Daicel's three-year grant acceleration

Daicel Polymer Ltd. shows 7 grants in 2022–2024 against only 6 in 2019–2021. That prior window is too thin for a growth multiple (rename and spin-out assignees look artificially high when the baseline is near zero), so PlainPatent withholds a ranked acceleration claim here.

Corbin Clinical R…

19
Creative Manufact…

19
Cummins Turbo

19
Daesang

19
Daikin America

19
Dairen Chemical

19
Danieli Automatio…

19
Deepsea Power & L…

19
Daicel Polymer ◀

19

What this shows Daicel holds 19 patents at rank #15,215, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Daicel

By rank, the assignees closest to #15,215 in granted patent volume.

Leaders in C08K (Use of inorganic or non-macromolecular organic substances…)

Other assignees with the most granted patents in Daicel's primary technology class.

Daicel's Innovation Score vs. every tracked assignee

Composite of portfolio volume, grant velocity, technology breadth, and claim depth (0–100)

39 Top 41% higher than 59% of 49,997 US assignees

Each bar is a band; taller bars hold more US assignees. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source USPTO PatentsView, PlainPatent Innovation Score · 2015–2025

USPTO utility patent grants by year · 2015–2024

Grants by year

Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.

View data table

Daicel Polymer Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	4	21.1%
2016	1	5.3%
2018	1	5.3%
2019	3	15.8%
2020	2	10.5%
2021	1	5.3%
2022	5	26.3%
2023	1	5.3%
2024	1	5.3%

Which technologies does Daicel Polymer Ltd. patent most?

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 11

C08L - Compositions OF Macromolecular Compounds 10

B29C - Shaping OR Joining OF PLASTICS; Shaping OF Material IN A Plastic State, NOT Otherwise Provided FOR; After-treatment OF THE Shaped Products, e.g. Repairing 8

B29K - Indexing Scheme Associated With Subclasses B29b, B29c OR B29d, Relating TO Moulding Materials OR TO Materials FOR ; Moulds, ; Reinforcements, Fillers OR Preformed Parts, e.g. Inserts 6

B23K - Soldering OR UNSOLDERING; WELDING; Cladding OR Plating BY Soldering OR WELDING; Cutting BY Applying Heat Locally, e.g. Flame CUTTING; Working BY Laser Beam 5

C08J - WORKING-UP; General Processes OF COMPOUNDING; After-treatment NOT Covered BY Subclasses C08b, C08c, C08f, C08g or C08h 5

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 4

H01Q - Antennas, i.e. Radio Aerials 3

H05K - Printed CIRCUITS; Casings OR Constructional Details OF Electric APPARATUS; Manufacture OF Assemblages OF Electrical Components 2

C11D - Detergent COMPOSITIONS; USE OF Single Substances AS DETERGENTS; Soap OR SOAP-MAKING; Resin SOAPS; Recovery OF Glycerol 2

B29B - Preparation OR Pretreatment OF THE Material TO BE SHAPED; Making Granules OR PREFORMS; Recovery OF Plastics OR Other Constituents OF Waste Material Containing Plastics 2

C23C - Coating Metallic MATERIAL; Coating Material With Metallic MATERIAL; Surface Treatment OF Metallic Material BY Diffusion Into THE Surface, BY Chemical Conversion OR SUBSTITUTION; Coating BY Vacuum Evaporation, BY Sputtering, BY ION Implantation OR BY Chemical Vapour Deposition, IN General 1

G01S - Radio DIRECTION-FINDING; Radio NAVIGATION; Determining Distance OR Velocity BY USE OF Radio WAVES; Locating OR Presence-detecting BY USE OF THE Reflection OR Reradiation OF Radio WAVES; Analogous Arrangements Using Other Waves 1

B08B - Cleaning IN GENERAL; Prevention OF Fouling IN General 1

F16L - PIPES; Joints OR Fittings FOR PIPES; Supports FOR Pipes, Cables OR Protective TUBING; Means FOR Thermal Insulation IN General 1

Top 15 of 19 technology areas

More on this record

Data Source

USPTO PatentsView, US granted patents 2015–2025

View all rankings → How is Innovation Score calculated?

What to do with this data

Daicel Polymer Ltd.'s patent record in context - here's where to go next.

Daicel Polymer Ltd.'s lead technology class is C08K (Use of inorganic or non-macromolecular organic substances as compounding ingredients), 57.9% of its portfolio - see every assignee active in that class. Explore C08K
Ranked #15,216 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Daicel Polymer Ltd. against Corbin Clinical Resources, LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 38.5/100 blends volume, velocity, technology breadth, and claim depth. How it's calculated

Figures reflect USPTO PatentsView grant data through May 2026; pending applications not yet granted are not counted.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the USPTO PatentsView database. Consult a qualified professional before making decisions based on this data.

Read our methodology - how this data is sourced, computed, and verified.

Data sources used on this page

USPTO PatentsView - the disambiguated bulk patent-grant, assignee, and CPC data this page's figures are derived from. patentsview.org
Cooperative Patent Classification (CPC) - the joint USPTO/EPO classification scheme used to group patents by technology area. cooperativepatentclassification.org
USPTO Patent Public Search - the official interface to verify the status of any individual patent. ppubs.uspto.gov

Compiled by PlainPatent, US Patent Intelligence Editorial Process · May 15, 2026

Every figure on PlainPatent is rendered directly from USPTO source data, no number is typed in by an editor. This page draws directly on USPTO source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.