USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Littelfuse Electronics (shanghai) Co., Ltd.

USPTO PatentsView assignee record - 7 granted patents across 14 technology areas, active 2019–2024. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: H01C (RESISTORS).

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · May 15, 2026

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

14.9

Avg claims per patent

-25%

5-year filing velocity

The verdict

Littelfuse holds 7 US patents across 14 technology areas, rank #36,279 of 50,000 tracked assignees.

#36,279
of 50,000 US assignees by volume: Top 53%
by Innovation Score (34.3/100): 14.9
avg claims per patent: -25%
filing velocity, last 5 yrs

Portfolio overview

Littelfuse Electronics (shanghai) Co., Ltd. has been granted 7 US utility patents between 2019 and 2024, placing Littelfuse Electronics (shanghai) Co., Ltd. at rank #36,279 across all assignees tracked by PlainPatent. This portfolio spans 14 distinct Cooperative Patent Classification (CPC) subclasses, averaging 14.9 claims per patent with primary concentration in H01C (RESISTORS). As a Foreign Corporation, Littelfuse Electronics (shanghai) Co., Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, Littelfuse sits between Links Medical Products Incorporated (7 patents, rank #36,275) and Lixin County Minghang Magnetic Soft Screen Door Co., Ltd. (7 patents, rank #36,283) - the closest US assignees by grant volume. The composite Innovation Score of 34.3/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Filing cadence tells the strategic story. Between 2020 and 2025 the company received 3 grants, compared with 4 in the 2015–2019 window, a -25% shift in five-year velocity. A cooling filing rate may reflect portfolio consolidation, shifting priorities, or reduced R&D throughput. The Foreign Corporation classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.

Claim depth and technology breadth together indicate competitive posture. Littelfuse Electronics (shanghai) Co., Ltd.'s 14.9 average claims per patent sits within the typical range for solid legal coverage without excessive prosecution cost, while concentration in 14 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Littelfuse Electronics (shanghai) Co., Ltd. against peers pursuing similar technology classes.

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Littelfuse (Shang… ◀

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What this shows Littelfuse holds 7 patents at rank #36,279, 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 #36,279 in granted patent volume.

Leaders in H01C (Resistors)

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

Littelfuse's Innovation Score vs. every tracked assignee

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

34 Top 53% higher than 47% of 50,000 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 · 2019–2024

Grants by year

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

View data table

Littelfuse Electronics (shanghai) Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2019	4	57.1%
2022	1	14.3%
2023	1	14.3%
2024	1	14.3%

Which technologies does Littelfuse Electronics (shanghai) Co., Ltd. patent most?

H01C - RESISTORS 4

H02H - EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS 3

H03H - IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS 2

H01G - CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE 2

H02K - DYNAMO-ELECTRIC MACHINES 2

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 2

C08L - COMPOSITIONS OF MACROMOLECULAR COMPOUNDS 2

H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 1

Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION 1

C08J - WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H 1

C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS 1

C08F - MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS 1

H01B - CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES 1

H01L - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10 1

Top 14 of 14 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Focused

Claim Depth Standard

Velocity Declining

Where it ranks

Overall rank by patents

#36,279

Across all tracked assignees

Innovation Score

34.3 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

How many patents does Littelfuse Electronics (shanghai) Co., Ltd. hold?

Littelfuse Electronics (shanghai) Co., Ltd. holds 7 US granted patents filed between 2019 and 2024, spanning 14 technology areas.

What is Littelfuse Electronics (shanghai) Co., Ltd.'s Innovation Score?

Littelfuse Electronics (shanghai) Co., Ltd. has an Innovation Score of 34.3 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Littelfuse Electronics (shanghai) Co., Ltd. focus on?

Littelfuse Electronics (shanghai) Co., Ltd.'s top technology area is H01C (RESISTORS) with 4 patents. The company has filed patents in 14 CPC subclasses total.

Is Littelfuse Electronics (shanghai) Co., Ltd.'s patent filing rate increasing or decreasing?

Littelfuse Electronics (shanghai) Co., Ltd.'s recent filing velocity is -25% compared to the prior five-year period. Filing activity has slowed relative to earlier years.

What does claim depth mean for Littelfuse Electronics (shanghai) Co., Ltd.'s patents?

Littelfuse Electronics (shanghai) Co., Ltd.'s patents average 14.9 claims each. This falls within the standard range, providing solid legal coverage.

How is the Littelfuse Electronics (shanghai) Co., Ltd. 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.

How to use this portfolio

Littelfuse's 7 grants land it in the top 53% by Innovation Score, but volume alone doesn't tell you where the strength sits.

Read that count against the largest US assignees before treating it as dominance - Littelfuse ranks #36,279 of 50,000. Top 50 holders
Most of this portfolio concentrates in H01C - see who else leads that technology area. H01C leaders
Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works

Patent counts and the Innovation Score measure patenting activity, not commercial success or the legal strength of any patent. Many patents are filed defensively. Verify the status of an individual patent against official USPTO records.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial

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 byPlainPatent Editorial, US Patent Intelligence Editorial Team · 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.