Where does China Petrochemical Development Corporation rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), China Petrochemical Development Corporation ranks #14,529 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 China Petrochemical Development Corporation hold?

China Petrochemical Development Corporation holds 20 US utility patents granted between 2015 and 2022, spanning 17 technology areas.

What is China Petrochemical Development Corporation's Innovation Score?

China Petrochemical Development Corporation has an Innovation Score of 35.1 out of 100 (top 50% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is China Petrochemical Development Corporation's patent grant rate increasing or decreasing?

China Petrochemical Development Corporation's recent grant velocity is -82% compared to the prior five-year period (grant years, not application filing dates). Grant activity has slowed relative to earlier years.

What does claim depth mean for China Petrochemical Development Corporation's patents?

China Petrochemical Development Corporation's patents average 13.9 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.

USPTO 2015–2025 USPTO PatentsView Foreign Government

China Petrochemical Development Corporation

Q: What technology areas does China Petrochemical Development Corporation focus on?

China Petrochemical Development Corporation's top technology area is B01J (Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus) with 12 patents, ranking #400 of 2,755 assignees active in that subclass. Grants appear in 17 CPC subclasses total.

Q: How is the China Petrochemical Development 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.

USPTO PatentsView assignee record - 20 granted patents across 17 technology areas, recorded in grant years 2015–2022. 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: B01J (Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, China ranks #14,529 of 49,997 tracked US assignees by granted-patent volume, with 20 patents across 17 technology areas.

#14,529
of 49,997 US assignees by volume: Top 50%
by Innovation Score (35.1/100): 13.9
avg claims per patent: -82%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R14529 · Foreign Government #14,529 · 20 grants

GRANTS-SMALL · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-RICH · TYPE-FRNGOV · VEL-DROP · BOOK-FULL

GRANTS-SMALL 20 grants
MID-PACK #14,529/49,997
PHOTO-FINISH CathRx
CPC-FOCUS B01J · 17 areas
INNOV-THIN 35.1/100
CLAIMS-RICH 13.9 claims/avg
TYPE-FRNGOV Foreign Gov
VEL-DROP -82% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: CathRx Ltd (±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 China’s 35.1 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 10.5 pts (30%) Velocity 1.7 pts (5%) Breadth 14.6 pts (41%) Claim depth 8.4 pts (24%)

Qualcomm Incorporated · highest

85
China Petrochemical… · this assignee

35
3D Lighting… · lowest

7

What this shows China's Innovation Score is 35.1/100 (top 50% 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 China?

Each dot is one of China’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). China’s own 13.9 claims/patent is ABOVE the 12.8 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where China's grants concentrate

China Petrochemical Development Corporation is a focused PatentsView assignee: 17 CPC subclasses with 60% of grants classified under B01J (Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus). Peak complete grant year is 2015 (7 grants) versus a trough of 1 in 2022. By volume, China sits between CathRx Ltd and Cloud Linux Software Inc..

China's three-year grant acceleration

China Petrochemical Development Corporation shows 1 grants in 2022–2024 against only 4 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.

Cathrx

20
Centre Hospitalie…

20
Ceratizit Austria…

20
Chemistry Design…

20
Clean Chemistry

20
Clear Cove Systems

20
Cleveland-cliffs…

20
Cloud Linux Softw…

20
China Petrochemic… ◀

20

What this shows China holds 20 patents at rank #14,542, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near China

By rank, the assignees closest to #14,542 in granted patent volume.

Leaders in B01J (Chemical OR Physical Processes)

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

China's Innovation Score vs. every tracked assignee

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

35 Top 50% higher than 50% 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 · 2015–2022

Grants by year

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

View data table

China Petrochemical Development Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	7	35.0%
2016	4	20.0%
2017	2	10.0%
2018	2	10.0%
2019	2	10.0%
2020	2	10.0%
2022	1	5.0%

Which technologies does China Petrochemical Development Corporation patent most?

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 12

C07C - Acyclic OR Carbocyclic Compounds 11

C07D - Heterocyclic Compounds 5

B01D - Separation 3

C01B - Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c 3

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 1

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 1

Y02T - Climate Change Mitigation Technologies Related TO Transportation 1

F23G - Cremation FURNACES; Consuming Waste Products BY Combustion 1

B09C - Reclamation OF Contaminated Soil 1

F27B - Furnaces, Kilns, Ovens OR Retorts IN GENERAL; Open Sintering OR Like Apparatus 1

F23J - Removal OR Treatment OF Combustion Products OR Combustion RESIDUES; Flues 1

C12P - Fermentation OR Enzyme-using Processes TO Synthesise A Desired Chemical Compound OR Composition OR TO Separate Optical Isomers From A Racemic Mixture 1

C12N - Microorganisms OR ENZYMES; Compositions THEREOF; Propagating, Preserving, OR Maintaining MICROORGANISMS; Mutation OR Genetic ENGINEERING; Culture Media 1

Y02A - Technologies FOR Adaptation TO Climate Change 1

Top 15 of 17 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

China Petrochemical Development Corporation's patent record in context - here's where to go next.

China Petrochemical Development Corporation's lead technology class is B01J (Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus), 60% of its portfolio - see every assignee active in that class. Explore B01J
Ranked #14,529 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare China Petrochemical Development Corporation against CathRx Ltd, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 35.1/100 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.