Where does Walbro LLC rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Walbro LLC ranks #3,440 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 Walbro LLC hold?

Walbro LLC holds 108 US utility patents granted between 2015 and 2025, spanning 37 technology areas.

What is Walbro LLC's Innovation Score?

Walbro LLC has an Innovation Score of 54.0 out of 100 (top 8% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Walbro LLC's patent grant rate increasing or decreasing?

Walbro LLC's recent grant velocity is +122% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Walbro LLC's patents?

Walbro LLC's patents average 17.4 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 Walbro LLC 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

Walbro LLC

Q: What technology areas does Walbro LLC focus on?

Walbro LLC's top technology area is F02M (Supplying Combustion Engines IN General With Combustible Mixtures OR Constituents Thereof) with 70 patents. Grants appear in 37 CPC subclasses total.

USPTO PatentsView assignee record - 108 granted patents across 37 technology areas, recorded in grant years 2015–2025. 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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The verdict

According to USPTO PatentsView, Walbro ranks #3,440 of 49,997 tracked US assignees by granted-patent volume, with 108 patents across 37 technology areas.

#3,440
of 49,997 US assignees by volume: Top 8%
by Innovation Score (54.0/100): 17.4
avg claims per patent: +122%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R3440 · US Corporation #3,440 · 108 grants

GRANTS-MID · TOP-DECILE · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-RICH · TYPE-USCORP · VEL-SURGE · BOOK-FULL

GRANTS-MID 108 grants
TOP-DECILE #3,440/49,997
PHOTO-FINISH The Heil
CPC-FOCUS F02M · 37 areas
INNOV-PAR 54.0/100
CLAIMS-RICH 17.4 claims/avg
TYPE-USCORP US Corporation
VEL-SURGE +122% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: The Heil Co. (±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
AmTRAN Technology · near

54
Indian Motorcycle… · near

54
Safran Aero Boosters · near

54
Walbro · this assignee

54
Yahoo Holdings · near

54
3D Lighting… · lowest

7

What this shows Walbro's Innovation Score is 54.0/100 (top 8% 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 Walbro's grants concentrate

Walbro LLC is a focused PatentsView assignee: 37 CPC subclasses with 64.8% of grants classified under F02M (Supplying Combustion Engines IN General With Combustible Mixtures OR Constituents Thereof). Peak complete grant year is 2021 (25 grants) versus a trough of 1 in 2015. By volume, Walbro sits between Toppan Inc. and Aurora Labs Ltd..

Walbro's three-year grant acceleration

From 2019–2021 to 2022–2024, Walbro LLC moved from 42 to 37 grants (0.88x the prior three-year total, a multiple, not a CAGR). Among 3,296 tracked assignees with ≥100 grants and ≥20 prior-period grants, that multiple ranks #1,548. See the growth leaderboard.

Toppan

108
The Heil

108
Toshiba Solutions

108
U S Well Services

108
WCM Industries

108
Walbro ◀

108
23andme

107
Amtran Technology

107
Aurora Labs

107

What this shows Walbro holds 108 patents at rank #3,440, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Walbro

By rank, the assignees closest to #3,440 in granted patent volume.

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

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Walbro, neither rank-band nor same-CPC leaders (those blocks stay above).

Similar innovation score

Nearest assignees by Innovation Score (54 here).

AmTRAN Technology Co., Ltd. 54 Safran Aero Boosters 54 Indian Motorcycle International, LLC 54 Yahoo Holdings, Inc. 54

Similar claim depth

Nearest assignees by average claims per patent (17.4 here).

Technische Universität Wien 17.4 avg Teleflex Life Sciences LLC 17.4 avg Shanghai Bilibili Technology Co., Ltd. 17.4 avg Alexion Pharmaceuticals, Inc. 17.4 avg

Walbro's Innovation Score vs. every tracked assignee

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

54 Top 8% higher than 92% 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 · 2015–2025

Grants by year

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

View data table

Walbro LLC patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	0.9%
2016	3	2.8%
2017	10	9.3%
2018	10	9.3%
2019	8	7.4%
2020	9	8.3%
2021	25	23.1%
2022	19	17.6%
2023	8	7.4%
2024	10	9.3%
2025partial year	5	4.6%

Which technologies does Walbro LLC patent most?

F02M - Supplying Combustion Engines IN General With Combustible Mixtures OR Constituents Thereof 70

F02D - Controlling Combustion Engines 48

F02P - Ignition, Other Than Compression Ignition, FOR Internal-combustion ENGINES; Testing OF Ignition Timing IN Compression-ignition Engines 17

F16K - VALVES; TAPS; COCKS; ACTUATING-FLOATS; Devices FOR Venting OR Aerating 13

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 11

Y02T - Climate Change Mitigation Technologies Related TO Transportation 10

F02B - Internal-combustion Piston ENGINES; Combustion Engines IN General 9

Y10T - Technical Subjects Covered BY Former US Classification 8

F02N - Starting OF Combustion ENGINES; Starting Aids FOR Such Engines, NOT Otherwise Provided FOR 7

B01F - Mixing, e.g. Dissolving, Emulsifying OR Dispersing 6

B60W - Conjoint Control OF Vehicle Sub-units OF Different Type OR Different FUNCTION; Control Systems Specially Adapted FOR Hybrid VEHICLES; Road Vehicle Drive Control Systems FOR Purposes NOT Related TO THE Control OF A Particular Sub-unit 6

G05B - Control OR Regulating Systems IN GENERAL; Functional Elements OF Such SYSTEMS; Monitoring OR Testing Arrangements FOR Such Systems OR Elements 3

H01R - Electrically-conductive CONNECTIONS; Structural Associations OF A Plurality OF Mutually-insulated Electrical Connecting ELEMENTS; Coupling DEVICES; Current Collectors 3

F04D - Non-positive-displacement Pumps 3

H01F - MAGNETS; INDUCTANCES; TRANSFORMERS; Selection OF Materials FOR Their Magnetic Properties 3

Top 15 of 37 technology areas

Where it ranks

Overall rank by patents

#3,440

of 49,997 tracked assignees

Innovation Score

54.0 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

Walbro LLC's patent record in context - here's where to go next.

Walbro LLC's lead technology class is F02M (Supplying Combustion Engines IN General With Combustible Mixtures OR Constituents Thereof), 64.8% of its portfolio - see every assignee active in that class. Explore F02M
Ranked #3,440 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Walbro LLC against Toppan Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 54.0/100 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.