Overall rank by patents
#4,810
Across all tracked assignees
USPTO 2015–2025 USPTO PatentsView Foreign Corporation
China National Petroleum Corporation
USPTO PatentsView assignee record — 72 granted patents across 39 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: E21B (EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS).
72
Total patents granted
39
CPC technology areas
12.3
Avg claims per patent
+160%
5-year filing velocity
The verdict
China holds 72 US patents across 39 technology areas — rank #4,810 of 50,000 tracked assignees.
- #4,810
- of 50,000 US assignees by volume
- Top 4%
- by Innovation Score (59.9/100)
- 12.3
- avg claims per patent
- +160%
- filing velocity, last 5 yrs
Portfolio overview
China National Petroleum Corporation has been granted 72 US utility patents between 2015 and 2025, placing China National Petroleum Corporation at rank #4,810 across all assignees tracked by PlainPatent. This portfolio spans 39 distinct Cooperative Patent Classification (CPC) subclasses, averaging 12.3 claims per patent with primary concentration in E21B (EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS). As a Foreign Corporation, China National Petroleum Corporation is one of the more focused assignees in the PatentsView dataset. The composite Innovation Score of 59.9/100 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 52 grants, compared with 20 in the 2015–2019 window — a +160% 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. China National Petroleum Corporation's 12.3 average claims per patent sits within the typical range for solid legal coverage without excessive prosecution cost, while a multi-domain presence across 39 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark China National Petroleum Corporation against peers pursuing similar technology classes.
How does China 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
- China National Pe… ◀ 72
China National Petroleum Corporation
72 patents
What this shows China holds 72 patents — placing it at rank #4,810 overall, well behind the volume leaders but ahead of the tens of thousands of smaller assignees in the dataset.
China's Innovation Score vs. every tracked assignee
Composite of portfolio volume, filing velocity, technology breadth, and claim depth (0–100)
60 Top 4% higher than 96% 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
| Year | Patents Granted | Share of Period |
|---|---|---|
| 2015 | 4 | 5.6% |
| 2016 | 3 | 4.2% |
| 2017 | 2 | 2.8% |
| 2018 | 5 | 6.9% |
| 2019 | 6 | 8.3% |
| 2020 | 3 | 4.2% |
| 2021 | 3 | 4.2% |
| 2022 | 3 | 4.2% |
| 2023 | 8 | 11.1% |
| 2024 | 17 | 23.6% |
| 2025 | 18 | 25.0% |
Which technologies does China National Petroleum Corporation patent most?
Top 15 of 39 technology areas
Patent Moat Analysis
Portfolio Volume Light
Tech Breadth Multi-domain
Claim Depth Standard
Velocity Accelerating
Frequently Asked Questions
How many patents does China National Petroleum Corporation hold?
China National Petroleum Corporation holds 72 US granted patents filed between 2015 and 2025, spanning 39 technology areas.
What is China National Petroleum Corporation's Innovation Score?
China National Petroleum Corporation has an Innovation Score of 59.9 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).
What technology areas does China National Petroleum Corporation focus on?
China National Petroleum Corporation's top technology area is E21B (EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS) with 43 patents. The company has filed patents in 39 CPC subclasses total.
Is China National Petroleum Corporation's patent filing rate increasing or decreasing?
China National Petroleum Corporation's recent filing velocity is +160% compared to the prior five-year period. This indicates accelerating innovation.
What does claim depth mean for China National Petroleum Corporation's patents?
China National Petroleum Corporation's patents average 12.3 claims each. This falls within the standard range, providing solid legal coverage.
How is the China National Petroleum Corporation 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
How to use this portfolio
China's 72 grants land it in the top 4% 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 — China ranks #4,810 of 50,000. Top 50 holders
- Most of this portfolio concentrates in E21B — see who else leads that technology area. E21B 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.
Explore the patent dataset
E21B technology
China National Petroleum Corporation's primary CPC class — all holders and yearly trends
Top 50 patent holders
See where China National Petroleum Corporation 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.
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
