Where does Leehan Corporation rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Leehan Corporation ranks #29,268 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 Leehan Corporation hold?

Leehan Corporation holds 9 US utility patents granted between 2015 and 2022, spanning 7 technology areas.

What is Leehan Corporation's Innovation Score?

Leehan Corporation has an Innovation Score of 27.5 out of 100 (24th 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 Leehan Corporation focus on?

Leehan Corporation's top technology area is F02M (Supplying Combustion Engines IN General With Combustible Mixtures OR Constituents Thereof) with 7 patents, ranking #156 of 574 assignees active in that subclass. Grants appear in 7 CPC subclasses total.

Is Leehan Corporation's patent grant rate increasing or decreasing?

Leehan Corporation's recent grant velocity is -71% 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 Leehan Corporation's patents?

Leehan Corporation's patents average 5.9 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 Leehan Corporation 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

Leehan Corporation

USPTO PatentsView assignee record - 9 granted patents across 7 technology areas, recorded in grant years 2015–2022. 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: F02M (Supplying Combustion Engines IN General With Combustible Mixtures OR Constituents Thereof).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Leehan ranks #29,268 of 49,997 tracked US assignees by granted-patent volume, with 9 patents across 7 technology areas.

#29,268
of 49,997 US assignees by volume: 24th percentile
by Innovation Score (27.5/100): 5.9
avg claims per patent: -71%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R29268 · Foreign Corporation #29,268 · 9 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 9 grants
MID-PACK #29,268/49,997
PHOTO-FINISH Labyrinth
CPC-NARROW F02M · 7 areas
INNOV-THIN 27.5/100
CLAIMS-SPARSE 5.9 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -71% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Labyrinth Technologies, LLC (±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 Leehan’s 27.5 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 8.0 pts (29%) Velocity 6.7 pts (24%) Breadth 9.4 pts (34%) Claim depth 3.5 pts (13%)

Qualcomm Incorporated · highest

85
Leehan · this assignee

28
3D Lighting… · lowest

7

What this shows Leehan's Innovation Score is 27.5/100 (24th 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 Leehan?

Each dot is one of Leehan’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). Leehan’s own 5.9 claims/patent is at or below the 12.7 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Leehan's grants concentrate

Leehan Corporation is a focused PatentsView assignee: 7 CPC subclasses with 77.8% of grants classified under F02M (Supplying Combustion Engines IN General With Combustible Mixtures OR Constituents Thereof). Peak complete grant year is 2018 (3 grants) versus a trough of 1 in 2015. By volume, Leehan sits between Labyrinth Technologies, LLC and Lemmings, LLC.

Leehan's three-year grant acceleration

Leehan Corporation shows 1 grants in 2022–2024 against only 1 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.

Labyrinth

9
Lassen Canyon Nur…

9
Laydon Composites

9
Learning Squared

9
Leftcoast Innovat…

9
Leifeld Metal Spi…

9
Lemförder

9
Lemmings

9
Leehan ◀

9

What this shows Leehan holds 9 patents at rank #29,281, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Leehan

By rank, the assignees closest to #29,281 in granted patent volume.

Leaders in F02M (Supplying Combustion Engines IN General With Combustible…)

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

Leehan's Innovation Score vs. every tracked assignee

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

28 24th percentile higher than 24% 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 · 2015–2022

Grants by year

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

View data table

Leehan Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	11.1%
2016	2	22.2%
2017	1	11.1%
2018	3	33.3%
2020	1	11.1%
2022	1	11.1%

Which technologies does Leehan Corporation patent most?

F02M - Supplying Combustion Engines IN General With Combustible Mixtures OR Constituents Thereof 7

B01D - Separation 5

B60K - Arrangement OR Mounting OF Propulsion Units OR OF Transmissions IN VEHICLES; Arrangement OR Mounting OF Plural Diverse Prime-movers IN VEHICLES; Auxiliary Drives FOR VEHICLES; Instrumentation OR Dashboards FOR VEHICLES; Arrangements IN Connection With Cooling, AIR Intake, GAS Exhaust OR Fuel Supply 3

F01N - Gas-flow Silencers OR Exhaust Apparatus FOR Machines OR Engines IN GENERAL; Gas-flow Silencers OR Exhaust Apparatus FOR Internal-combustion Engines 2

G01D - Measuring NOT Specially Adapted FOR A Specific VARIABLE; Arrangements FOR Measuring TWO OR More Variables NOT Covered IN A Single Other SUBCLASS; Tariff Metering APPARATUS; Measuring OR Testing NOT Otherwise Provided FOR 1

F02D - Controlling Combustion Engines 1

F16K - VALVES; TAPS; COCKS; ACTUATING-FLOATS; Devices FOR Venting OR Aerating 1

Top 7 of 7 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

Leehan Corporation's patent record in context - here's where to go next.

Leehan Corporation's lead technology class is F02M (Supplying Combustion Engines IN General With Combustible Mixtures OR Constituents Thereof), 77.8% of its portfolio - see every assignee active in that class. Explore F02M
Ranked #29,268 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Leehan Corporation against Labyrinth Technologies, LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 27.5/100 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.