Where does Chang Chun Plastics Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Chang Chun Plastics Co., Ltd. ranks #5,147 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 Chang Chun Plastics Co., Ltd. hold?

Chang Chun Plastics Co., Ltd. holds 67 US utility patents granted between 2015 and 2025, spanning 49 technology areas.

What is Chang Chun Plastics Co., Ltd.'s Innovation Score?

Chang Chun Plastics Co., Ltd. has an Innovation Score of 54.1 out of 100 (top 8% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Chang Chun Plastics Co., Ltd.'s patent grant rate increasing or decreasing?

Chang Chun Plastics Co., Ltd.'s recent grant velocity is +95% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Chang Chun Plastics Co., Ltd.'s patents?

Chang Chun Plastics Co., Ltd.'s patents average 13.4 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 Chang Chun Plastics 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

Chang Chun Plastics Co., Ltd.

Q: What technology areas does Chang Chun Plastics Co., Ltd. focus on?

Chang Chun Plastics Co., Ltd.'s top technology area is C08G (Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds) with 38 patents, ranking #114 of 1,741 assignees active in that subclass. Grants appear in 49 CPC subclasses total.

USPTO PatentsView assignee record - 67 granted patents across 49 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: C08G (Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Chang ranks #5,147 of 49,997 tracked US assignees by granted-patent volume, with 67 patents across 49 technology areas.

#5,147
of 49,997 US assignees by volume: Top 8%
by Innovation Score (54.1/100): 13.4
avg claims per patent: +95%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R5147 · Foreign Corporation #5,147 · 67 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-WIDE · INNOV-PAR · CLAIMS-RICH · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-SMALL 67 grants
UPPER-Q #5,147/49,997
PHOTO-FINISH Beken
CPC-WIDE C08G · 49 areas
INNOV-PAR 54.1/100
CLAIMS-RICH 13.4 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +95% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Beken Corporation (±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 Chang’s 54.1 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 14.6 pts (27%) Velocity 6.7 pts (12%) Breadth 24.7 pts (46%) Claim depth 8.1 pts (15%)

Qualcomm Incorporated · highest

85
Albemarle · near

54
Chang Chun Plastics · this assignee

54
Global Mixed-mode… · near

54
Korea Institute OF… · near

54
Technische Universit… · near

54
3D Lighting… · lowest

7

What this shows Chang's Innovation Score is 54.1/100 (top 8% 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 Chang?

Each dot is one of Chang’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). Chang’s own 13.4 claims/patent is ABOVE the 9.2 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Chang's grants concentrate

Chang Chun Plastics Co., Ltd. is a focused PatentsView assignee: 49 CPC subclasses with 56.7% of grants classified under C08G (Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds). Peak complete grant year is 2024 (13 grants) versus a trough of 2 in 2015. By volume, Chang sits between Beken Corporation and Electric Power Research Institute, Inc..

Chang's three-year grant acceleration

From 2019–2021 to 2022–2024, Chang Chun Plastics Co., Ltd. moved from 25 to 25 grants (1.00x the prior three-year total, a multiple, not a CAGR). See the growth leaderboard.

Beken

67
Cambridge Mechatr…

67
Children's Nation…

67
Cellix Bio Private

67
China Medical Uni…

67
De' Longhi Applia…

67
EKO Development

67
Electric Power Re…

67
Chang Chun Plasti… ◀

67

What this shows Chang holds 67 patents at rank #5,148, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Chang

By rank, the assignees closest to #5,148 in granted patent volume.

Leaders in C08G (Macromolecular Compounds Obtained Otherwise Than BY React…)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Chang, neither rank-band nor same-CPC leaders (those blocks stay above). In C08G (Macromolecular Compounds Obtained Otherwise Than BY React…), Chang ranks #114 of 1,741 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (54 here).

Technische Universiteit Eindhoven 54 Albemarle Corporation 54 Korea Institute OF Industrial Technology 54 Global Mixed-mode Technology Inc. 54

Similar claim depth

Nearest assignees by average claims per patent (13.4 here).

TRW Limited 13.4 avg Akebono Brake Industry Co., Ltd. 13.4 avg Archer-daniels-midland Company 13.4 avg Lite-on Electronics (GUANGZHOU) Limited 13.4 avg

Chang's Innovation Score vs. every tracked assignee

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

54 Top 8% higher than 92% 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

Chang Chun Plastics Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	2	3.0%
2016	2	3.0%
2017	5	7.5%
2018	3	4.5%
2019	9	13.4%
2020	8	11.9%
2021	8	11.9%
2022	3	4.5%
2023	9	13.4%
2024	13	19.4%
2025partial year	5	7.5%

Which technologies does Chang Chun Plastics Co., Ltd. patent most?

C08G - Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds 38

C08L - Compositions OF Macromolecular Compounds 16

C08J - WORKING-UP; General Processes OF COMPOUNDING; After-treatment NOT Covered BY Subclasses C08b, C08c, C08f, C08g or C08h 14

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 10

C07C - Acyclic OR Carbocyclic Compounds 9

H05K - Printed CIRCUITS; Casings OR Constructional Details OF Electric APPARATUS; Manufacture OF Assemblages OF Electrical Components 9

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 8

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 8

C12N - Microorganisms OR ENZYMES; Compositions THEREOF; Propagating, Preserving, OR Maintaining MICROORGANISMS; Mutation OR Genetic ENGINEERING; Culture Media 7

C12Y - Enzymes 6

B01D - Separation 6

C07F - Acyclic, Carbocyclic OR Heterocyclic Compounds Containing Elements Other Than Carbon, Hydrogen, Halogen, Oxygen, Nitrogen, Sulfur, Selenium OR Tellurium 6

C09K - Materials FOR Miscellaneous Applications, NOT Provided FOR Elsewhere 6

C07D - Heterocyclic Compounds 5

C12P - Fermentation OR Enzyme-using Processes TO Synthesise A Desired Chemical Compound OR Composition OR TO Separate Optical Isomers From A Racemic Mixture 5

Top 15 of 49 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

Chang Chun Plastics Co., Ltd.'s patent record in context - here's where to go next.

Chang Chun Plastics Co., Ltd.'s lead technology class is C08G (Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds), 56.7% of its portfolio - see every assignee active in that class. Explore C08G
Ranked #5,147 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Chang Chun Plastics Co., Ltd. against Beken Corporation, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 54.1/100 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.