Where does Dairen Chemical Corp. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Dairen Chemical Corp. ranks #15,219 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 Dairen Chemical Corp. hold?

Dairen Chemical Corp. holds 19 US utility patents granted between 2015 and 2025, spanning 20 technology areas.

What is Dairen Chemical Corp.'s Innovation Score?

Dairen Chemical Corp. has an Innovation Score of 39.4 out of 100 (top 38% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Dairen Chemical Corp. focus on?

Dairen Chemical Corp.'s top technology area is C07C (Acyclic OR Carbocyclic Compounds) with 6 patents, ranking #724 of 2,691 assignees active in that subclass. Grants appear in 20 CPC subclasses total.

Is Dairen Chemical Corp.'s patent grant rate increasing or decreasing?

Dairen Chemical Corp.'s recent grant velocity is +400% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Dairen Chemical Corp.'s patents?

Dairen Chemical Corp.'s patents average 12.1 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 Dairen Chemical Corp. 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

Dairen Chemical Corp.

USPTO PatentsView assignee record - 19 granted patents across 20 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: C07C (Acyclic OR Carbocyclic Compounds).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Dairen ranks #15,219 of 49,997 tracked US assignees by granted-patent volume, with 19 patents across 20 technology areas.

#15,219
of 49,997 US assignees by volume: Top 38%
by Innovation Score (39.4/100): 12.1
avg claims per patent: +400%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R15219 · Foreign Corporation #15,219 · 19 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-RICH · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-MICRO 19 grants
MID-PACK #15,219/49,997
PHOTO-FINISH Cummins Turbo
CPC-FOCUS C07C · 20 areas
INNOV-THIN 39.4/100
CLAIMS-RICH 12.1 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +400% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Cummins Turbo Technologies Limited (±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 Dairen’s 39.4 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 10.3 pts (26%) Velocity 5.9 pts (15%) Breadth 15.8 pts (40%) Claim depth 7.3 pts (19%)

Qualcomm Incorporated · highest

85
Dairen Chemical · this assignee

39
3D Lighting… · lowest

7

What this shows Dairen's Innovation Score is 39.4/100 (top 38% 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 Dairen?

Each dot is one of Dairen’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). Dairen’s own 12.1 claims/patent is ABOVE the 11.7 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Dairen's grants concentrate

Dairen Chemical Corp. is a focused PatentsView assignee: 20 CPC subclasses with 31.6% of grants classified under C07C (Acyclic OR Carbocyclic Compounds). Peak complete grant year is 2020 (5 grants) versus a trough of 1 in 2015. By volume, Dairen sits between Cummins Turbo Technologies Limited and Dongguan Kingtron Electronics Technology Co., Ltd.

Dairen's three-year grant acceleration

Dairen Chemical Corp. shows 8 grants in 2022–2024 against only 9 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.

Cummins Turbo

19
Daesang

19
Daicel Polymer

19
Daikin America

19
Danieli Automatio…

19
Deepsea Power & L…

19
Digital Lumens In…

19
Dongguan Kingtron…

19
Dairen Chemical ◀

19

What this shows Dairen holds 19 patents at rank #15,217, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Dairen

By rank, the assignees closest to #15,217 in granted patent volume.

Leaders in C07C (Acyclic OR Carbocyclic Compounds)

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

Dairen's Innovation Score vs. every tracked assignee

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

39 Top 38% higher than 62% 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

Dairen Chemical Corp. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	5.3%
2019	2	10.5%
2020	5	26.3%
2021	2	10.5%
2022	1	5.3%
2023	3	15.8%
2024	4	21.1%
2025partial year	1	5.3%

Which technologies does Dairen Chemical Corp. patent most?

C07C - Acyclic OR Carbocyclic Compounds 6

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 4

C08G - Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds 4

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 3

C12P - Fermentation OR Enzyme-using Processes TO Synthesise A Desired Chemical Compound OR Composition OR TO Separate Optical Isomers From A Racemic Mixture 3

C12Y - Enzymes 3

C12N - Microorganisms OR ENZYMES; Compositions THEREOF; Propagating, Preserving, OR Maintaining MICROORGANISMS; Mutation OR Genetic ENGINEERING; Culture Media 3

B01D - Separation 3

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 3

C07D - Heterocyclic Compounds 2

C25D - Processes FOR THE Electrolytic OR Electrophoretic Production OF COATINGS; ELECTROFORMING; Apparatus Therefor 2

C25B - Electrolytic OR Electrophoretic Processes FOR THE Production OF Compounds OR NON-METALS; Apparatus Therefor 2

C22C - Alloys 2

C08L - Compositions OF Macromolecular Compounds 2

C08F - Macromolecular Compounds Obtained BY Reactions Only Involving Carbon-to-carbon Unsaturated Bonds 2

Top 15 of 20 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

Dairen Chemical Corp.'s patent record in context - here's where to go next.

Dairen Chemical Corp.'s lead technology class is C07C (Acyclic OR Carbocyclic Compounds), 31.6% of its portfolio - see every assignee active in that class. Explore C07C
Ranked #15,219 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Dairen Chemical Corp. against Cummins Turbo Technologies Limited, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 39.4/100 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.