Where does Prime Polymer Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Prime Polymer Co., Ltd. ranks #14,218 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 Prime Polymer Co., Ltd. hold?

Prime Polymer Co., Ltd. holds 21 US utility patents granted between 2015 and 2025, spanning 20 technology areas.

What is Prime Polymer Co., Ltd.'s Innovation Score?

Prime Polymer Co., Ltd. has an Innovation Score of 35.5 out of 100 (top 49% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Prime Polymer Co., Ltd. focus on?

Prime Polymer Co., Ltd.'s top technology area is C08L (Compositions OF Macromolecular Compounds) with 19 patents, ranking #237 of 2,352 assignees active in that subclass. Grants appear in 20 CPC subclasses total.

Is Prime Polymer Co., Ltd.'s patent grant rate increasing or decreasing?

Prime Polymer Co., Ltd.'s recent grant velocity is +0% 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 Prime Polymer Co., Ltd.'s patents?

Prime Polymer Co., Ltd.'s patents average 9.4 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 Prime Polymer Co., 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

Prime Polymer Co., Ltd.

USPTO PatentsView assignee record - 21 granted patents across 20 technology areas, recorded in grant years 2015–2025. 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: C08L (Compositions OF Macromolecular Compounds).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Prime ranks #14,218 of 49,997 tracked US assignees by granted-patent volume, with 21 patents across 20 technology areas.

#14,218
of 49,997 US assignees by volume: Top 49%
by Innovation Score (35.5/100): 9.4
avg claims per patent: +0%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R14218 · Foreign Corporation #14,218 · 21 grants

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

GRANTS-SMALL 21 grants
MID-PACK #14,218/49,997
PHOTO-FINISH Packaging of America
CPC-FOCUS C08L · 20 areas
INNOV-THIN 35.5/100
CLAIMS-PAR 9.4 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-FLAT +0% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Packaging Corporation of America (±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 Prime’s 35.5 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 10.7 pts (30%) Velocity 3.3 pts (9%) Breadth 15.8 pts (45%) Claim depth 5.6 pts (16%)

Qualcomm Incorporated · highest

85
Prime Polymer · this assignee

35
3D Lighting… · lowest

7

What this shows Prime's Innovation Score is 35.5/100 (top 49% 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 Prime?

Each dot is one of Prime’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). Prime’s own 9.4 claims/patent is at or below the 16.7 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Prime's grants concentrate

Prime Polymer Co., Ltd. is a focused PatentsView assignee: 20 CPC subclasses with 90.5% of grants classified under C08L (Compositions OF Macromolecular Compounds). Peak complete grant year is 2020 (4 grants) versus a trough of 1 in 2021. By volume, Prime sits between PDSI and Phibro Animal Health Corporation.

Prime's three-year grant acceleration

Prime Polymer Co., Ltd. shows 4 grants in 2022–2024 against only 8 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.

PDSI

21
Perspecta Labs

21
Petromac IP

21
Powercell Sweden…

21
Pulmocide

21
Packaging of Amer…

21
Petrowell

21
Phibro Animal Hea…

21
Prime Polymer ◀

21

What this shows Prime holds 21 patents at rank #14,201, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Prime

By rank, the assignees closest to #14,201 in granted patent volume.

Leaders in C08L (Compositions OF Macromolecular Compounds)

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

Prime's Innovation Score vs. every tracked assignee

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

35 Top 49% higher than 51% 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 · 2015–2025

Grants by year

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

View data table

Prime Polymer Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	2	9.5%
2016	2	9.5%
2018	2	9.5%
2019	3	14.3%
2020	4	19.0%
2021	1	4.8%
2022	3	14.3%
2024	1	4.8%
2025partial year	3	14.3%

Which technologies does Prime Polymer Co., Ltd. patent most?

C08L - Compositions OF Macromolecular Compounds 19

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

C08F - Macromolecular Compounds Obtained BY Reactions Only Involving Carbon-to-carbon Unsaturated Bonds 11

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 10

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 10

C08J - WORKING-UP; General Processes OF COMPOUNDING; After-treatment NOT Covered BY Subclasses C08b, C08c, C08f, C08g or C08h 7

H01G - CAPACITORS; Capacitors, Rectifiers, Detectors, Switching Devices, Light-sensitive OR Temperature-sensitive Devices OF THE Electrolytic Type 6

B29L - Indexing Scheme Associated With Subclass B29c, Relating TO Particular Articles 6

Y02T - Climate Change Mitigation Technologies Related TO Transportation 3

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 2

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 2

B62D - Motor VEHICLES; Trailers 1

C09K - Materials FOR Miscellaneous Applications, NOT Provided FOR Elsewhere 1

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 1

C07F - Acyclic, Carbocyclic OR Heterocyclic Compounds Containing Elements Other Than Carbon, Hydrogen, Halogen, Oxygen, Nitrogen, Sulfur, Selenium OR Tellurium 1

Top 15 of 20 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

Prime Polymer Co., Ltd.'s patent record in context - here's where to go next.

Prime Polymer Co., Ltd.'s lead technology class is C08L (Compositions OF Macromolecular Compounds), 90.5% of its portfolio - see every assignee active in that class. Explore C08L
Ranked #14,218 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Prime Polymer Co., Ltd. against PDSI, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 35.5/100 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.