USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Chang Chun Plastics Co., Ltd.

USPTO PatentsView assignee record - 67 granted patents across 49 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: C08G (MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS).

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

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

13.4

Avg claims per patent

+119%

5-year filing velocity

The verdict

Chang holds 67 US patents across 49 technology areas, rank #5,148 of 50,000 tracked assignees.

#5,148
of 50,000 US assignees by volume: Top 8%
by Innovation Score (54.1/100): 13.4
avg claims per patent: +119%
filing velocity, last 5 yrs

Portfolio overview

Chang Chun Plastics Co., Ltd. has been granted 67 US utility patents between 2015 and 2025, placing Chang Chun Plastics Co., Ltd. at rank #5,148 across all assignees tracked by PlainPatent. This portfolio spans 49 distinct Cooperative Patent Classification (CPC) subclasses, averaging 13.4 claims per patent with primary concentration in C08G (MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS). As a Foreign Corporation, Chang Chun Plastics Co., Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, Chang sits between Beken Corporation (67 patents, rank #5,144) and Electric Power Research Institute, Inc. (67 patents, rank #5,152) - the closest US assignees by grant volume. The composite Innovation Score of 54.1/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Filing cadence tells the strategic story. Between 2020 and 2025 the company received 46 grants, compared with 21 in the 2015–2019 window, a +119% shift in five-year velocity. An acceleration of this magnitude signals aggressive R&D investment and expanding technical ambition. The Foreign Corporation classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.

Claim depth and technology breadth together indicate competitive posture. Chang Chun Plastics Co., Ltd.'s 13.4 average claims per patent sits within the typical range for solid legal coverage without excessive prosecution cost, while a multi-domain presence across 49 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Chang Chun Plastics Co., Ltd. against peers pursuing similar technology classes.

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.

Chang's Innovation Score vs. every tracked assignee

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

54 Top 8% higher than 92% of 50,000 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%
2025	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

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Multi-domain

Claim Depth Standard

Velocity Accelerating

Where it ranks

Overall rank by patents

#5,148

Across all tracked assignees

Innovation Score

54.1 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

How many patents does Chang Chun Plastics Co., Ltd. hold?

Chang Chun Plastics Co., Ltd. holds 67 US granted patents filed 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. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

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. The company has filed patents in 49 CPC subclasses total.

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

Chang Chun Plastics Co., Ltd.'s recent filing velocity is +119% compared to the prior five-year period. This indicates accelerating innovation.

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 falls within the standard range, providing solid legal coverage.

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.

How to use this portfolio

Chang's 67 grants land it in the top 8% by Innovation Score, but volume alone doesn't tell you where the strength sits.

Read that count against the largest US assignees before treating it as dominance - Chang ranks #5,148 of 50,000. Top 50 holders
Most of this portfolio concentrates in C08G - see who else leads that technology area. C08G leaders
Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works

Patent counts and the Innovation Score measure patenting activity, not commercial success or the legal strength of any patent. Many patents are filed defensively. Verify the status of an individual patent against official USPTO records.

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

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 Editorial, US Patent Intelligence Editorial Team · 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.