Overall rank by patents
#3,619
Across all tracked assignees
USPTO 2015–2025 USPTO PatentsView Foreign Corporation
CHANG CHUN PETROCHEMICAL CO., LTD.
USPTO PatentsView assignee record — 101 granted patents across 60 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: B32B (LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM).
101
Total patents granted
60
CPC technology areas
14.8
Avg claims per patent
+174%
5-year filing velocity
Portfolio overview
CHANG CHUN PETROCHEMICAL CO., LTD. has been granted 101 US utility patents between 2015 and 2025, placing CHANG CHUN PETROCHEMICAL CO., LTD. at rank #3,619 across all assignees tracked by PlainPatent. This portfolio spans 60 distinct Cooperative Patent Classification (CPC) subclasses, averaging 14.8 claims per patent with primary concentration in B32B (LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM). As a Foreign Corporation, CHANG CHUN PETROCHEMICAL CO., LTD. is one of the broader-portfolio assignees in the PatentsView dataset. The composite Innovation Score of 54.5/100 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 74 grants, compared with 27 in the 2015–2019 window — a +174% 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 PETROCHEMICAL CO., LTD.'s 14.8 average claims per patent sits within the typical range for solid legal coverage without excessive prosecution cost, while a multi-domain presence across 60 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark CHANG CHUN PETROCHEMICAL CO., LTD. against peers pursuing similar technology classes.
How does CHANG compare?
Granted US patents 2015–2025 versus the largest corporate holders — this company marked ◀
- Samsung
SAMSUNG ELECTRONICS CO., LTD.
106,890 patents
- International Bus…
International Business Machines Corporation
72,926 patents
- Canon 34,378
Canon Kabushiki Kaisha
34,378 patents
- LG 32,607
LG ELECTRONICS INC.
32,607 patents
- Taiwan Semiconduc… 31,041
TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
31,041 patents
- Apple 30,560
Apple Inc.
30,560 patents
- Qualcomm Incorpor… 30,354
QUALCOMM Incorporated
30,354 patents
- Intel 27,498
Intel Corporation
27,498 patents
- Chang CHUN Petroc… ◀ 101
CHANG CHUN PETROCHEMICAL CO., LTD.
101 patents
What this shows CHANG holds 101 patents — placing it at rank #3,619 overall, well behind the volume leaders but ahead of the tens of thousands of smaller assignees in the dataset.
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
| Year | Patents Granted | Share of Period |
|---|---|---|
| 2015 | 1 | 1.0% |
| 2016 | 5 | 5.0% |
| 2017 | 7 | 6.9% |
| 2018 | 4 | 4.0% |
| 2019 | 10 | 9.9% |
| 2020 | 18 | 17.8% |
| 2021 | 16 | 15.8% |
| 2022 | 11 | 10.9% |
| 2023 | 10 | 9.9% |
| 2024 | 10 | 9.9% |
| 2025 | 9 | 8.9% |
Which technologies does CHANG CHUN PETROCHEMICAL CO., LTD. patent most?
Top 15 of 60 technology areas
Patent Moat Analysis
Portfolio Volume Moderate
Tech Breadth Multi-domain
Claim Depth Standard
Velocity Accelerating
Frequently Asked Questions
How many patents does CHANG CHUN PETROCHEMICAL CO., LTD. hold?
CHANG CHUN PETROCHEMICAL CO., LTD. holds 101 US granted patents filed between 2015 and 2025, spanning 60 technology areas.
What is CHANG CHUN PETROCHEMICAL CO., LTD.'s Innovation Score?
CHANG CHUN PETROCHEMICAL CO., LTD. has an Innovation Score of 54.5 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 PETROCHEMICAL CO., LTD. focus on?
CHANG CHUN PETROCHEMICAL CO., LTD.'s top technology area is B32B (LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM) with 44 patents. The company has filed patents in 60 CPC subclasses total.
Is CHANG CHUN PETROCHEMICAL CO., LTD.'s patent filing rate increasing or decreasing?
CHANG CHUN PETROCHEMICAL CO., LTD.'s recent filing velocity is +174% compared to the prior five-year period. This indicates accelerating innovation.
What does claim depth mean for CHANG CHUN PETROCHEMICAL CO., LTD.'s patents?
CHANG CHUN PETROCHEMICAL CO., LTD.'s patents average 14.8 claims each. This falls within the standard range, providing solid legal coverage.
How is the CHANG CHUN PETROCHEMICAL 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.
Learn More
Explore the patent dataset
B32B technology
CHANG CHUN PETROCHEMICAL CO., LTD.'s primary CPC class — all holders and yearly trends
Top 50 patent holders
See where CHANG CHUN PETROCHEMICAL CO., LTD. ranks among the largest US patent assignees
All technology classes
Browse every CPC technology area by patent activity
How the score works
The four dimensions behind the Innovation Score
Related
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.
All federal data sources used on this page
- USPTO PatentsView — official U.S. Patent and Trademark Office bulk patent data. patentsview.org
- USPTO Patent Application Information Retrieval (PAIR) — application status and file history. uspto.gov/patents/pair
- USPTO Bulk Data Storage System — comprehensive patent text + claims dataset. bulkdata.uspto.gov
- USPTO CPC Classification — Cooperative Patent Classification scheme for technology categorization. uspto.gov/cpc
- SEC EDGAR — public filings cross-reference for assignee corporate entity matching. sec.gov/edgar
- WIPO PATENTSCOPE — international patent context (related international filings). wipo.int/patentscope
