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

According to USPTO PatentsView (2015–2025 granted utility patents), Littelfuse, Inc. ranks #1,298 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 Littelfuse, Inc. hold?

Littelfuse, Inc. holds 326 US utility patents granted between 2015 and 2025, spanning 81 technology areas.

What is Littelfuse, Inc.'s Innovation Score?

Littelfuse, Inc. has an Innovation Score of 58.2 out of 100 (top 5% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Littelfuse, Inc. focus on?

Littelfuse, Inc.'s top technology area is H01H (Electric SWITCHES; RELAYS; SELECTORS; Emergency Protective Devices) with 158 patents, ranking #10 of 1,006 assignees active in that subclass. Grants appear in 81 CPC subclasses total.

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

Littelfuse, Inc.'s recent grant velocity is +3% compared to the prior five-year period (grant years, not application filing dates). The company is maintaining or growing its granted-patent output.

What does claim depth mean for Littelfuse, Inc.'s patents?

Littelfuse, Inc.'s patents average 14.2 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 Littelfuse, 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

Littelfuse, Inc.

USPTO PatentsView assignee record - 326 granted patents across 81 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: H01H (Electric SWITCHES; RELAYS; SELECTORS; Emergency Protective Devices).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Littelfuse ranks #1,298 of 49,997 tracked US assignees by granted-patent volume, with 326 patents across 81 technology areas.

#1,298
of 49,997 US assignees by volume: Top 5%
by Innovation Score (58.2/100): 14.2
avg claims per patent: +3%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R1298 · US Corporation #1,298 · 326 grants

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

GRANTS-MID 326 grants
TOP-DECILE #1,298/49,997
PHOTO-FINISH Bayer Pharma…
CPC-WIDE H01H · 81 areas
INNOV-PAR 58.2/100
CLAIMS-RICH 14.2 claims/avg
TYPE-USCORP US Corporation
VEL-FLAT +3% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Bayer Pharma Aktiengesellschaft (±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 Littelfuse’s 58.2 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 20.0 pts (34%) Velocity 4.7 pts (8%) Breadth 25.0 pts (43%) Claim depth 8.5 pts (15%)

Qualcomm Incorporated · highest

85
Ajou University… · near

58
Beijing University… · near

58
Inserm (INSTITUT… · near

58
John Bean · near

58
Littelfuse · this assignee

58
3D Lighting… · lowest

7

What this shows Littelfuse's Innovation Score is 58.2/100 (top 5% 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 Littelfuse?

Each dot is one of Littelfuse’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). Littelfuse’s own 14.2 claims/patent is at or below the 14.4 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

How Littelfuse's grant cadence moved

Between 2020–2024, Littelfuse, Inc. received 161 grants versus 157 in 2015–2019 (+3% equal-window velocity, above median growth). Across complete PatentsView years, output peaked in 2019 at 75 grants and bottomed in 2016 at 13. Lead class H01H accounts for 48.5% of the portfolio across 81 subclasses. Volume neighbours: University of Houston System (#1,294) and University OF Connecticut (#1,302).

Littelfuse's three-year grant acceleration

From 2019–2021 to 2022–2024, Littelfuse, Inc. moved from 138 to 98 grants (0.71x 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 #2,120. See the growth leaderboard.

University of Hou…

327
Bayer Pharma Akti…

326
Hangzhou Hikvisio…

326
Klemm + Sohn & KG

326
Ningde Amperex Te…

326
Sick

326
Sumitomo Riko

326
University OF Con…

326
Littelfuse ◀

326

What this shows Littelfuse holds 326 patents at rank #1,298, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Littelfuse

By rank, the assignees closest to #1,298 in granted patent volume.

Leaders in H01H (Electric Switches)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Littelfuse, neither rank-band nor same-CPC leaders (those blocks stay above). In H01H (Electric Switches), Littelfuse ranks #10 of 1,006 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (58 here).

Ajou University Industry-academic Cooperation 58 Inserm (INSTITUT National DE LA SANTÉ ET DE LA Recherche MÉDICALE) 58 Beijing University OF Posts AND Telecommunications 58 John Bean Technologies Corporation 58

Similar claim depth

Nearest assignees by average claims per patent (14.2 here).

Trading Technologies International, Inc. 14.2 avg The University of Toledo 14.2 avg Life Technologies Corporation 14.2 avg Goodrich Corporation 14.2 avg

Littelfuse's Innovation Score vs. every tracked assignee

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

58 Top 5% higher than 95% 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

Littelfuse, Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	22	6.7%
2016	13	4.0%
2017	24	7.4%
2018	23	7.1%
2019	75	23.0%
2020	35	10.7%
2021	28	8.6%
2022	35	10.7%
2023	39	12.0%
2024	24	7.4%
2025partial year	8	2.5%

Which technologies does Littelfuse, Inc. patent most?

H01H - Electric SWITCHES; RELAYS; SELECTORS; Emergency Protective Devices 158

H02H - Emergency Protective Circuit Arrangements 48

H01C - Resistors 47

H01L - Semiconductor Devices NOT Covered BY Class H10 40

H10D - Inorganic Electric Semiconductor Devices 39

H01R - Electrically-conductive CONNECTIONS; Structural Associations OF A Plurality OF Mutually-insulated Electrical Connecting ELEMENTS; Coupling DEVICES; Current Collectors 28

Y10T - Technical Subjects Covered BY Former US Classification 23

H05K - Printed CIRCUITS; Casings OR Constructional Details OF Electric APPARATUS; Manufacture OF Assemblages OF Electrical Components 22

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 19

H03K - Pulse Technique 19

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 18

H01B - CABLES; CONDUCTORS; INSULATORS; Selection OF Materials FOR Their Conductive, Insulating OR Dielectric Properties 16

G01R - Measuring Electric VARIABLES; Measuring Magnetic Variables 14

B60R - Vehicles, Vehicle Fittings, OR Vehicle Parts, NOT Otherwise Provided FOR 12

H02J - Circuit Arrangements OR Systems FOR Supplying OR Distributing Electric POWER; Systems FOR Storing Electric Energy 10

Top 15 of 81 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

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

Littelfuse, Inc.'s lead technology class is H01H (Electric SWITCHES; RELAYS; SELECTORS; Emergency Protective Devices), 48.5% of its portfolio - see every assignee active in that class. Explore H01H
Ranked #1,298 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Littelfuse, Inc. against University of Houston System, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 58.2/100 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.