Where does LiquidPiston, Inc. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), LiquidPiston, Inc. ranks #22,910 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 LiquidPiston, Inc. hold?

LiquidPiston, Inc. holds 12 US utility patents granted between 2016 and 2023, spanning 12 technology areas.

What is LiquidPiston, Inc.'s Innovation Score?

LiquidPiston, Inc. has an Innovation Score of 29.0 out of 100 (29th 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 LiquidPiston, Inc. focus on?

LiquidPiston, Inc.'s top technology area is F02B (Internal-combustion Piston ENGINES; Combustion Engines IN General) with 11 patents, ranking #91 of 496 assignees active in that subclass. Grants appear in 12 CPC subclasses total.

Is LiquidPiston, Inc.'s patent grant rate increasing or decreasing?

LiquidPiston, Inc.'s recent grant velocity is -80% 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 LiquidPiston, Inc.'s patents?

LiquidPiston, Inc.'s patents average 10.4 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 LiquidPiston, 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

LiquidPiston, Inc.

USPTO PatentsView assignee record - 12 granted patents across 12 technology areas, recorded in grant years 2016–2023. 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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The verdict

According to USPTO PatentsView, Liquidpiston ranks #22,910 of 49,997 tracked US assignees by granted-patent volume, with 12 patents across 12 technology areas.

#22,910
of 49,997 US assignees by volume: 29th percentile
by Innovation Score (29.0/100): 10.4
avg claims per patent: -80%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R22910 · US Corporation #22,910 · 12 grants

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

GRANTS-MICRO 12 grants
MID-PACK #22,910/49,997
PHOTO-FINISH Light Line Medical
CPC-FOCUS F02B · 12 areas
INNOV-THIN 29.0/100
CLAIMS-PAR 10.4 claims/avg
TYPE-USCORP US Corporation
VEL-DROP -80% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Light Line Medical, Inc. (±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 Liquidpiston’s 29.0 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 8.9 pts (31%) Velocity 1.7 pts (6%) Breadth 12.2 pts (42%) Claim depth 6.3 pts (22%)

Qualcomm Incorporated · highest

85
LiquidPiston · this assignee

29
3D Lighting… · lowest

7

What this shows Liquidpiston's Innovation Score is 29.0/100 (29th 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 Liquidpiston?

Each dot is one of Liquidpiston’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). Liquidpiston’s own 10.4 claims/patent is ABOVE the 9.5 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Liquidpiston's grants concentrate

LiquidPiston, Inc. is a focused PatentsView assignee: 12 CPC subclasses with 91.7% of grants classified under F02B (Internal-combustion Piston ENGINES; Combustion Engines IN General). Peak complete grant year is 2016 (4 grants) versus a trough of 1 in 2018. By volume, Liquidpiston sits between Light Line Medical, Inc. and Locus Location Systems, LLC.

Liquidpiston's three-year grant acceleration

LiquidPiston, Inc. 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.

Light Line Medical

12
Lin Engineering

12
Linhai Guokang Le…

12
Linyi Huadong Pet…

12
Liteboxer

12
Liveclips

12
Lockheed Martin C…

12
Locus Location Sy…

12
Liquidpiston ◀

12

What this shows LiquidPiston holds 12 patents at rank #22,913, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near LiquidPiston

By rank, the assignees closest to #22,913 in granted patent volume.

Leaders in F02B (Internal-combustion Piston Engines)

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

Liquidpiston's Innovation Score vs. every tracked assignee

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

29 29th percentile higher than 29% 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 · 2016–2023

Grants by year

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

View data table

LiquidPiston, Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	4	33.3%
2017	2	16.7%
2018	1	8.3%
2019	3	25.0%
2021	1	8.3%
2023	1	8.3%

Which technologies does LiquidPiston, Inc. patent most?

F02B - Internal-combustion Piston ENGINES; Combustion Engines IN General 11

F01C - Rotary-piston OR Oscillating-piston Machines OR Engines 11

Y02T - Climate Change Mitigation Technologies Related TO Transportation 10

F02M - Supplying Combustion Engines IN General With Combustible Mixtures OR Constituents Thereof 5

F02D - Controlling Combustion Engines 3

F01L - Cyclically Operating Valves FOR Machines OR Engines 2

F16F - SPRINGS; SHOCK-ABSORBERS; Means FOR Damping Vibration 2

F04C - Rotary-piston, OR Oscillating-piston, Positive-displacement Machines FOR Liquids ; Rotary-piston, OR Oscillating-piston, Positive-displacement Pumps 2

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

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

F16J - Pistons ; CYLINDERS; Sealings 1

Top 12 of 12 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

LiquidPiston, Inc.'s patent record in context - here's where to go next.

LiquidPiston, Inc.'s lead technology class is F02B (Internal-combustion Piston ENGINES; Combustion Engines IN General), 91.7% of its portfolio - see every assignee active in that class. Explore F02B
Ranked #22,910 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare LiquidPiston, Inc. against Light Line Medical, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 29.0/100 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.