Where does Clean Diesel Technologies, Inc. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Clean Diesel Technologies, Inc. ranks #11,970 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 Clean Diesel Technologies, Inc. hold?

Clean Diesel Technologies, Inc. holds 25 US utility patents granted between 2015 and 2018, spanning 14 technology areas.

What is Clean Diesel Technologies, Inc.'s Innovation Score?

Clean Diesel Technologies, Inc. has an Innovation Score of 34.6 out of 100 (48th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Clean Diesel Technologies, Inc. focus on?

Clean Diesel Technologies, Inc.'s top technology area is B01J (Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus) with 25 patents, ranking #184 of 2,755 assignees active in that subclass. Grants appear in 14 CPC subclasses total.

Is Clean Diesel Technologies, Inc.'s patent grant rate increasing or decreasing?

Clean Diesel Technologies, Inc.'s recent grant velocity is -100% 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 Clean Diesel Technologies, Inc.'s patents?

Clean Diesel Technologies, Inc.'s patents average 16.8 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 Clean Diesel Technologies, Inc. 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 US Corporation

Clean Diesel Technologies, Inc.

USPTO PatentsView assignee record - 25 granted patents across 14 technology areas, recorded in grant years 2015–2018. 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

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The verdict

According to USPTO PatentsView, Clean ranks #11,970 of 49,997 tracked US assignees by granted-patent volume, with 25 patents across 14 technology areas.

#11,970
of 49,997 US assignees by volume: 48th percentile
by Innovation Score (34.6/100): 16.8
avg claims per patent: -100%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R11970 · US Corporation #11,970 · 25 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-RICH · TYPE-USCORP · VEL-DROP · BOOK-FULL

GRANTS-SMALL 25 grants
UPPER-Q #11,970/49,997
PHOTO-FINISH Central China…
CPC-FOCUS B01J · 14 areas
INNOV-THIN 34.6/100
CLAIMS-RICH 16.8 claims/avg
TYPE-USCORP US Corporation
VEL-DROP -100% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Central China Normal University (±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 Clean’s 34.6 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 11.3 pts (33%) Velocity 0.0 pts (0%) Breadth 13.2 pts (38%) Claim depth 10.1 pts (29%)

Qualcomm Incorporated · highest

85
Medical Diagnostic… · near

35
Quixey · near

35
Clean Diesel · this assignee

35
Joulwatt Technology… · near

35
NLB · near

35
3D Lighting… · lowest

7

What this shows Clean's Innovation Score is 34.6/100 (48th percentile 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 Clean?

Each dot is one of Clean’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). Clean’s own 16.8 claims/patent is ABOVE the 16.1 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Clean's grants concentrate

Clean Diesel Technologies, Inc. is a focused PatentsView assignee: 14 CPC subclasses with 100% of grants classified under B01J (Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus). Peak complete grant year is 2015 (9 grants) versus a trough of 1 in 2018. By volume, Clean sits between Central China Normal University and Cree Fayetteville, Inc..

Central China Nor…

25
Cepton

25
Chevron (HK)

25
Claret Medical

25
Cleveland State U…

25
Consort Medical

25
Continental Advan…

25
Cree Fayetteville

25
Clean Diesel ◀

25

What this shows Clean holds 25 patents at rank #11,976, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Clean

By rank, the assignees closest to #11,976 in granted patent volume.

Leaders in B01J (Chemical OR Physical Processes)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Clean, neither rank-band nor same-CPC leaders (those blocks stay above). In B01J (Chemical OR Physical Processes), Clean ranks #184 of 2,755 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (35 here).

Joulwatt Technology (HANGZHOU) Co., Ltd. 35 NLB, Corp. 35 Medical Diagnostic Laboratories, LLC 35 Quixey, Inc. 35

Clean's Innovation Score vs. every tracked assignee

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

35 48th percentile higher than 48% 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 · 2015–2018

Grants by year

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

View data table

Clean Diesel Technologies, Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	9	36.0%
2016	9	36.0%
2017	6	24.0%
2018	1	4.0%

Which technologies does Clean Diesel Technologies, Inc. patent most?

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 25

B01D - Separation 24

Y02T - Climate Change Mitigation Technologies Related TO Transportation 19

Y02A - Technologies FOR Adaptation TO Climate Change 4

Y10S - Technical Subjects Covered BY Former Uspc Cross-reference ART Collections [XRACs] AND Digests 3

C01P - Indexing Scheme Relating TO Structural AND Physical Aspects OF Solid Inorganic Compounds 2

C01G - Compounds Containing Metals NOT Covered BY Subclasses C01d OR C01f 2

F01N - Gas-flow Silencers OR Exhaust Apparatus FOR Machines OR Engines IN GENERAL; Gas-flow Silencers OR Exhaust Apparatus FOR Internal-combustion Engines 1

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 1

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

C01B - Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c 1

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 1

C04B - Lime, MAGNESIA; SLAG; CEMENTS; Compositions Thereof, e.g. Mortars, Concrete OR Like Building MATERIALS; Artificial Stone ; Ceramics ; REFRACTORIES; Treatment OF Natural Stone 1

C01F - Compounds OF THE Metals Beryllium, Magnesium, Aluminium, Calcium, Strontium, Barium, Radium, Thorium, OR OF THE Rare-earth Metals 1

Top 14 of 14 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

Clean Diesel Technologies, Inc.'s patent record in context - here's where to go next.

Clean Diesel Technologies, Inc.'s lead technology class is B01J (Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus), 100% of its portfolio - see every assignee active in that class. Explore B01J
Ranked #11,970 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Clean Diesel Technologies, Inc. against Central China Normal University, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 34.6/100 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.