Where does Marshall Electric Corp. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Marshall Electric Corp. ranks #32,431 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 Marshall Electric Corp. hold?

Marshall Electric Corp. holds 8 US utility patents granted between 2017 and 2019, spanning 5 technology areas.

What is Marshall Electric Corp.'s Innovation Score?

Marshall Electric Corp. has an Innovation Score of 24.4 out of 100 (15th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Marshall Electric Corp.'s patent grant rate increasing or decreasing?

Marshall Electric Corp.'s recent grant velocity is -100% 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 Marshall Electric Corp.'s patents?

Marshall Electric Corp.'s patents average 14.9 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 Marshall Electric Corp. 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

Marshall Electric Corp.

Q: What technology areas does Marshall Electric Corp. focus on?

Marshall Electric Corp.'s top technology area is F02P (Ignition, Other Than Compression Ignition, FOR Internal-combustion ENGINES; Testing OF Ignition Timing IN Compression-ignition Engines) with 6 patents, ranking #29 of 101 assignees active in that subclass. Grants appear in 5 CPC subclasses total.

USPTO PatentsView assignee record - 8 granted patents across 5 technology areas, recorded in grant years 2017–2019. 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: F02P (Ignition, Other Than Compression Ignition, FOR Internal-combustion ENGINES; Testing OF Ignition Timing IN Compression-ignition Engines).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Marshall ranks #32,431 of 49,997 tracked US assignees by granted-patent volume, with 8 patents across 5 technology areas.

#32,431
of 49,997 US assignees by volume: 15th percentile
by Innovation Score (24.4/100): 14.9
avg claims per patent: -100%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R32431 · US Corporation #32,431 · 8 grants

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

GRANTS-MICRO 8 grants
MID-PACK #32,431/49,997
PHOTO-FINISH MANN+HUMMEL…
CPC-NARROW F02P · 5 areas
INNOV-THIN 24.4/100
CLAIMS-RICH 14.9 claims/avg
TYPE-USCORP US Corporation
VEL-DROP -100% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: MANN+HUMMEL Purolator Filters 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 Marshall’s 24.4 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 7.6 pts (31%) Velocity 0.0 pts (0%) Breadth 7.9 pts (32%) Claim depth 8.9 pts (36%)

Qualcomm Incorporated · highest

85
Marshall Electric · this assignee

24
3D Lighting… · lowest

7

What this shows Marshall's Innovation Score is 24.4/100 (15th 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 Marshall?

Each dot is one of Marshall’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). Marshall’s own 14.9 claims/patent is ABOVE the 13.3 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Marshall's grants concentrate

Marshall Electric Corp. is a focused PatentsView assignee: 5 CPC subclasses with 75% of grants classified under F02P (Ignition, Other Than Compression Ignition, FOR Internal-combustion ENGINES; Testing OF Ignition Timing IN Compression-ignition Engines). Peak complete grant year is 2018 (6 grants) versus a trough of 1 in 2017. By volume, Marshall sits between MANN+HUMMEL Purolator Filters LLC and Mate GmbH.

MANN+Hummel Purol…

8
Mannington Mills

8
Marantec Antriebs…

8
Maritime Telecomm…

8
Maruo Calcium

8
Marvis Interventi…

8
Maschinenfabrik K…

8
Mate

8
Marshall Electric ◀

8

What this shows Marshall holds 8 patents at rank #32,404, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Marshall

By rank, the assignees closest to #32,404 in granted patent volume.

Leaders in F02P (Ignition)

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

Marshall's Innovation Score vs. every tracked assignee

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

24 15th percentile higher than 15% 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 · 2017–2019

Grants by year

Teal-shaded recent years (2020–present) versus the 2017–2019 baseline. Full figures in the table below.

View data table

Marshall Electric Corp. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2017	1	12.5%
2018	6	75.0%
2019	1	12.5%

Which technologies does Marshall Electric Corp. patent most?

F02P - Ignition, Other Than Compression Ignition, FOR Internal-combustion ENGINES; Testing OF Ignition Timing IN Compression-ignition Engines 6

H01T - Spark GAPS; Overvoltage Arresters Using Spark GAPS; Sparking PLUGS; Corona DEVICES; Generating Ions TO BE Introduced Into Non-enclosed Gases 6

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

H01R - Electrically-conductive CONNECTIONS; Structural Associations OF A Plurality OF Mutually-insulated Electrical Connecting ELEMENTS; Coupling DEVICES; Current Collectors 2

Y02T - Climate Change Mitigation Technologies Related TO Transportation 1

Top 5 of 5 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

Marshall Electric Corp.'s patent record in context - here's where to go next.

Marshall Electric Corp.'s lead technology class is F02P (Ignition, Other Than Compression Ignition, FOR Internal-combustion ENGINES; Testing OF Ignition Timing IN Compression-ignition Engines), 75% of its portfolio - see every assignee active in that class. Explore F02P
Ranked #32,431 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Marshall Electric Corp. against MANN+HUMMEL Purolator Filters LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 24.4/100 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.