Where does Clean Train Propulsion rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Clean Train Propulsion ranks #34,771 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 Train Propulsion hold?

Clean Train Propulsion holds 7 US utility patents granted between 2015 and 2021, spanning 13 technology areas.

What is Clean Train Propulsion's Innovation Score?

Clean Train Propulsion has an Innovation Score of 30.3 out of 100 (34th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Clean Train Propulsion's patent grant rate increasing or decreasing?

Clean Train Propulsion's recent grant velocity is -83% 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 Train Propulsion's patents?

Clean Train Propulsion's patents average 17.3 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 Train Propulsion 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 Train Propulsion

Q: What technology areas does Clean Train Propulsion focus on?

Clean Train Propulsion's top technology area is Y02T (Climate Change Mitigation Technologies Related TO Transportation) with 7 patents. Grants appear in 13 CPC subclasses total.

USPTO PatentsView assignee record - 7 granted patents across 13 technology areas, recorded in grant years 2015–2021. 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: Y02T (Climate Change Mitigation Technologies Related TO Transportation).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Clean ranks #34,771 of 49,997 tracked US assignees by granted-patent volume, with 7 patents across 13 technology areas.

#34,771
of 49,997 US assignees by volume: 34th percentile
by Innovation Score (30.3/100): 17.3
avg claims per patent: -83%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R34771 · US Corporation #34,771 · 7 grants

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

GRANTS-MICRO 7 grants
MID-PACK #34,771/49,997
PHOTO-FINISH Clarity Pharmaceutic…
CPC-FOCUS Y02T · 13 areas
INNOV-THIN 30.3/100
CLAIMS-RICH 17.3 claims/avg
TYPE-USCORP US Corporation
VEL-DROP -83% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Clarity Pharmaceuticals 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.

Qualcomm Incorporated · highest

85
Clean Train Propulsion · this assignee

30
3D Lighting… · lowest

7

What this shows Clean's Innovation Score is 30.3/100 (34th 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.

Where Clean's grants concentrate

Clean Train Propulsion is a focused PatentsView assignee: 13 CPC subclasses with 100% of grants classified under Y02T (Climate Change Mitigation Technologies Related TO Transportation). Peak complete grant year is 2017 (3 grants) versus a trough of 1 in 2015. By volume, Clean sits between Clarity Pharmaceuticals Ltd and Clearbrief, Inc..

Clarity Pharmaceu…

7
Clarus Therapeuti…

7
Clean Air-enginee…

7
Clean Diesel (Cdt…

7
Clean-shot Archery

7
Clear

7
Clearvector

7
Clearbrief

7
Clean Train Propu… ◀

7

What this shows Clean holds 7 patents at rank #34,835, 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 #34,835 in granted patent volume.

Leaders in Y02T (Climate Change Mitigation Technologies Related TO Transpo…)

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

Clean's Innovation Score vs. every tracked assignee

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

30 34th percentile higher than 34% 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 · 2015–2021

Grants by year

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

View data table

Clean Train Propulsion patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	14.3%
2017	3	42.9%
2019	2	28.6%
2021	1	14.3%

Which technologies does Clean Train Propulsion patent most?

Y02T - Climate Change Mitigation Technologies Related TO Transportation 7

F01N - Gas-flow Silencers OR Exhaust Apparatus FOR Machines OR Engines IN GENERAL; Gas-flow Silencers OR Exhaust Apparatus FOR Internal-combustion Engines 6

B61C - LOCOMOTIVES; Motor Railcars 3

B61D - Body Details OR Kinds OF Railway Vehicles 2

G01R - Measuring Electric VARIABLES; Measuring Magnetic Variables 2

B60M - Power Supply Lines, AND Devices Along Rails, FOR Electrically- Propelled Vehicles 2

G06Q - Information AND Communication Technology [ICT] Specially Adapted FOR Administrative, Commercial, Financial, Managerial OR Supervisory PURPOSES; Systems OR Methods Specially Adapted FOR Administrative, Commercial, Financial, Managerial OR Supervisory Purposes, NOT Otherwise Provided FOR 2

B60L - Propulsion OF Electrically-propelled Vehicles ; Supplying Electric Power FOR Auxiliary Equipment OF Electrically-propelled Vehicles ; Electrodynamic Brake Systems FOR Vehicles IN General ; Magnetic Suspension OR Levitation FOR VEHICLES; Monitoring Operating Variables OF Electrically-propelled Vehicl 2

H02J - Circuit Arrangements OR Systems FOR Supplying OR Distributing Electric POWER; Systems FOR Storing Electric Energy 2

F02M - Supplying Combustion Engines IN General With Combustible Mixtures OR Constituents Thereof 2

B61H - Brakes OR Other Retarding Devices Specially Adapted FOR Rail VEHICLES; Arrangement OR Disposition Thereof IN Rail Vehicles 1

F01P - Cooling OF Machines OR Engines IN GENERAL; Cooling OF Internal-combustion Engines 1

F02B - Internal-combustion Piston ENGINES; Combustion Engines IN General 1

Top 13 of 13 technology areas

Where it ranks

Overall rank by patents

#34,771

of 49,997 tracked assignees

Innovation Score

30.3 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

What to do with this data

Clean Train Propulsion's patent record in context - here's where to go next.

Clean Train Propulsion's lead technology class is Y02T (Climate Change Mitigation Technologies Related TO Transportation), 100% of its portfolio - see every assignee active in that class. Explore Y02T
Ranked #34,771 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Clean Train Propulsion against Clarity Pharmaceuticals Ltd, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 30.3/100 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.