USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Koito Electric Industries, Ltd

USPTO PatentsView assignee record - 21 granted patents across 21 technology areas, active 2019–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: B61D (BODY DETAILS OR KINDS OF RAILWAY VEHICLES).

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

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

6.3

Avg claims per patent

+850%

5-year filing velocity

The verdict

Koito holds 21 US patents across 21 technology areas, rank #14,091 of 50,000 tracked assignees.

#14,091
of 50,000 US assignees by volume: Top 29%
by Innovation Score (43.1/100): 6.3
avg claims per patent: +850%
filing velocity, last 5 yrs

Portfolio overview

Koito Electric Industries, Ltd has been granted 21 US utility patents between 2019 and 2025, placing Koito Electric Industries, Ltd at rank #14,091 across all assignees tracked by PlainPatent. This portfolio spans 21 distinct Cooperative Patent Classification (CPC) subclasses, averaging 6.3 claims per patent with primary concentration in B61D (BODY DETAILS OR KINDS OF RAILWAY VEHICLES). As a Foreign Corporation, Koito Electric Industries, Ltd is one of the more focused assignees in the PatentsView dataset. By volume, Koito sits between Juka Innovations Corporation (21 patents, rank #14,087) and Karus Therapeutics Limited (21 patents, rank #14,095) - the closest US assignees by grant volume. The composite Innovation Score of 43.1/100 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 19 grants, compared with 2 in the 2015–2019 window, a +850% shift in five-year velocity. An acceleration of this magnitude signals aggressive R&D investment and expanding technical ambition. 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. Koito Electric Industries, Ltd's 6.3 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a multi-domain presence across 21 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Koito Electric Industries, Ltd against peers pursuing similar technology classes.

Juka Innovations

21
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21
Kimpex

21
Koken

21
Korea Airports

21
Korea Institute O…

21
Karus Therapeutics

21
Koito Electric In… ◀

21

What this shows Koito holds 21 patents at rank #14,091, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Koito

By rank, the assignees closest to #14,091 in granted patent volume.

Leaders in B61D (BODY Details OR Kinds OF Railway Vehicles)

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

Koito's Innovation Score vs. every tracked assignee

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

43 Top 29% higher than 71% 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 · 2019–2025

Grants by year

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

View data table

Koito Electric Industries, Ltd patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2019	2	9.5%
2020	2	9.5%
2021	3	14.3%
2022	1	4.8%
2023	7	33.3%
2024	5	23.8%
2025	1	4.8%

Which technologies does Koito Electric Industries, Ltd patent most?

B61D - BODY DETAILS OR KINDS OF RAILWAY VEHICLES 13

B60N - SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR 7

A47C - CHAIRS; SOFAS; BEDS 6

B60Q - ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL 5

F21V - FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR 5

G08G - TRAFFIC CONTROL SYSTEMS 4

F21S - NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS 4

F21Y - INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED 4

H05B - ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL 4

G02B - OPTICAL ELEMENTS, SYSTEMS OR APPARATUS 3

B60L - PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES ; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES ; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL ; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICL 2

H04B - TRANSMISSION 1

B60R - VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR 1

H03K - PULSE TECHNIQUE 1

H01H - ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES 1

Top 15 of 21 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Multi-domain

Claim Depth Simple

Velocity Accelerating

Where it ranks

Overall rank by patents

#14,091

Across all tracked assignees

Innovation Score

43.1 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 Koito Electric Industries, Ltd hold?

Koito Electric Industries, Ltd holds 21 US granted patents filed between 2019 and 2025, spanning 21 technology areas.

What is Koito Electric Industries, Ltd's Innovation Score?

Koito Electric Industries, Ltd has an Innovation Score of 43.1 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Koito Electric Industries, Ltd focus on?

Koito Electric Industries, Ltd's top technology area is B61D (BODY DETAILS OR KINDS OF RAILWAY VEHICLES) with 13 patents. The company has filed patents in 21 CPC subclasses total.

Is Koito Electric Industries, Ltd's patent filing rate increasing or decreasing?

Koito Electric Industries, Ltd's recent filing velocity is +850% compared to the prior five-year period. This indicates accelerating innovation.

What does claim depth mean for Koito Electric Industries, Ltd's patents?

Koito Electric Industries, Ltd's patents average 6.3 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Koito Electric Industries, 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

Koito's 21 grants land it in the top 29% 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 - Koito ranks #14,091 of 50,000. Top 50 holders
Most of this portfolio concentrates in B61D - see who else leads that technology area. B61D 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.