Where does Warren Engine Company, Inc rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Warren Engine Company, Inc ranks #38,276 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 Warren Engine Company, Inc hold?

Warren Engine Company, Inc holds 7 US utility patents granted between 2016 and 2020, spanning 14 technology areas.

What is Warren Engine Company, Inc's Innovation Score?

Warren Engine Company, Inc has an Innovation Score of 27.4 out of 100 (23rd 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 Warren Engine Company, Inc focus on?

Warren Engine Company, Inc's top technology area is F02B (Internal-combustion Piston ENGINES; Combustion Engines IN General) with 7 patents, ranking #134 of 496 assignees active in that subclass. Grants appear in 14 CPC subclasses total.

Is Warren Engine Company, Inc's patent grant rate increasing or decreasing?

Warren Engine Company, Inc'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 Warren Engine Company, Inc's patents?

Warren Engine Company, Inc's patents average 11.6 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 Warren Engine Company, 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

Warren Engine Company, Inc

USPTO PatentsView assignee record - 7 granted patents across 14 technology areas, recorded in grant years 2016–2020. 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: F02B (Internal-combustion Piston ENGINES; Combustion Engines IN General).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Warren ranks #38,276 of 49,997 tracked US assignees by granted-patent volume, with 7 patents across 14 technology areas.

#38,276
of 49,997 US assignees by volume: 23rd percentile
by Innovation Score (27.4/100): 11.6
avg claims per patent: -83%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R38276 · US Corporation #38,276 · 7 grants

GRANTS-MICRO · LOWER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-PAR · TYPE-USCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 7 grants
LOWER-Q #38,276/49,997
PHOTO-FINISH Walnut Technology
CPC-FOCUS F02B · 14 areas
INNOV-THIN 27.4/100
CLAIMS-PAR 11.6 claims/avg
TYPE-USCORP US Corporation
VEL-DROP -83% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Walnut Technology 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 Warren’s 27.4 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 7.2 pts (26%) Velocity 0.0 pts (0%) Breadth 13.2 pts (48%) Claim depth 6.9 pts (25%)

Qualcomm Incorporated · highest

85
Warren Engine · this assignee

27
3D Lighting… · lowest

7

What this shows Warren's Innovation Score is 27.4/100 (23rd 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 Warren?

Each dot is one of Warren’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). Warren’s own 11.6 claims/patent is ABOVE the 6.9 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Warren's grants concentrate

Warren Engine Company, Inc is a focused PatentsView assignee: 14 CPC subclasses with 100% of grants classified under F02B (Internal-combustion Piston ENGINES; Combustion Engines IN General). Peak complete grant year is 2017 (2 grants) versus a trough of 1 in 2016. By volume, Warren sits between Walnut Technology Limited and Waterstone, LLC.

Walnut Technology

7
Walsun Lighting (…

7
Warner Manufactur…

7
Warner Wireless I…

7
Warrior Rig

7
Waterbox OY

7
Waters Industries

7
Waterstone

7
Warren Engine ◀

7

What this shows Warren holds 7 patents at rank #38,291, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Warren

By rank, the assignees closest to #38,291 in granted patent volume.

Leaders in F02B (Internal-combustion Piston Engines)

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

Warren's Innovation Score vs. every tracked assignee

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

27 23rd percentile higher than 23% 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 · 2016–2020

Grants by year

Teal-shaded recent years (2020–present) versus the 2016–2019 baseline. Full figures in the table below.

View data table

Warren Engine Company, Inc patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	1	14.3%
2017	2	28.6%
2018	1	14.3%
2019	2	28.6%
2020	1	14.3%

Which technologies does Warren Engine Company, Inc patent most?

F02B - Internal-combustion Piston ENGINES; Combustion Engines IN General 7

F01B - Machines OR Engines, IN General OR OF Positive-displacement Type, e.g. Steam Engines 4

F01L - Cyclically Operating Valves FOR Machines OR Engines 2

F02P - Ignition, Other Than Compression Ignition, FOR Internal-combustion ENGINES; Testing OF Ignition Timing IN Compression-ignition Engines 2

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

Y02T - Climate Change Mitigation Technologies Related TO Transportation 1

F02G - HOT GAS OR Combustion-product Positive-displacement Engine Plants ; USE OF Waste Heat OF Combustion ENGINES; NOT Otherwise Provided FOR 1

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

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

Y02B - Climate Change Mitigation Technologies Related TO Buildings, e.g. Housing, House Appliances OR Related End-user Applications 1

F24D - Domestic- OR Space-heating Systems, e.g. Central Heating SYSTEMS; Domestic Hot-water Supply SYSTEMS; Elements OR Components Therefor 1

F01K - Steam Engine PLANTS; Steam ACCUMULATORS; Engine Plants NOT Otherwise Provided FOR; Engines Using Special Working Fluids OR Cycles 1

F02F - Cylinders, Pistons OR Casings, FOR Combustion ENGINES; Arrangements OF Sealings IN Combustion Engines 1

H01T - Spark GAPS; Overvoltage Arresters Using Spark GAPS; Sparking PLUGS; Corona DEVICES; Generating Ions TO BE Introduced Into Non-enclosed Gases 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

Warren Engine Company, Inc's patent record in context - here's where to go next.

Warren Engine Company, Inc's lead technology class is F02B (Internal-combustion Piston ENGINES; Combustion Engines IN General), 100% of its portfolio - see every assignee active in that class. Explore F02B
Ranked #38,276 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Warren Engine Company, Inc against Walnut Technology Limited, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 27.4/100 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.