USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Citizen Electronics Co., Ltd.

USPTO PatentsView assignee record - 251 granted patents across 28 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: H10H (INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS).

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

Explore the portfolio See the ranking

251

Total patents granted

CPC technology areas

9.8

Avg claims per patent

-74%

5-year filing velocity

The verdict

Citizen holds 251 US patents across 28 technology areas, rank #1,638 of 50,000 tracked assignees.

#1,638
of 50,000 US assignees by volume: Top 23%
by Innovation Score (45.5/100): 9.8
avg claims per patent: -74%
filing velocity, last 5 yrs

Portfolio overview

Citizen Electronics Co., Ltd. has been granted 251 US utility patents between 2015 and 2025, placing Citizen Electronics Co., Ltd. at rank #1,638 across all assignees tracked by PlainPatent. This portfolio spans 28 distinct Cooperative Patent Classification (CPC) subclasses, averaging 9.8 claims per patent with primary concentration in H10H (INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS). As a Foreign Corporation, Citizen Electronics Co., Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, Citizen sits between PS4 Luxco S.a.r.l. (252 patents, rank #1,634) and THE Aerospace Corporation (251 patents, rank #1,642) - the closest US assignees by grant volume. The composite Innovation Score of 45.5/100 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 51 grants, compared with 200 in the 2015–2019 window, a -74% 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. Citizen Electronics Co., Ltd.'s 9.8 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a multi-domain presence across 28 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Citizen Electronics Co., Ltd. against peers pursuing similar technology classes.

PS4 Luxco r l

252
Topgolf Callaway…

252
Verint Systems

252
Wayne State Unive…

252
Datalogic IP Tech…

251
GD Midea Air-cond…

251
Guardian Glass

251
THE Aerospace

251
Citizen ◀

251

What this shows Citizen holds 251 patents at rank #1,638, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Citizen

By rank, the assignees closest to #1,638 in granted patent volume.

Leaders in H10H (Inorganic Light-emitting Semiconductor Devices Having Pot…)

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

Citizen's Innovation Score vs. every tracked assignee

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

45 Top 23% higher than 77% 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 · 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

Citizen Electronics Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	28	11.2%
2016	39	15.5%
2017	56	22.3%
2018	41	16.3%
2019	36	14.3%
2020	19	7.6%
2021	11	4.4%
2022	6	2.4%
2023	9	3.6%
2024	3	1.2%
2025	3	1.2%

Which technologies does Citizen Electronics Co., Ltd. patent most?

H10H - INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS 111

H01L - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10 103

H05B - ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL 47

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 40

F21K - NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR 36

F21V - FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR 36

H01H - ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES 16

C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE 16

G02B - OPTICAL ELEMENTS, SYSTEMS OR APPARATUS 14

Y02B - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS 11

G02F - OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS 10

H05K - PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS 10

F21S - NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS 7

C04B - LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE ; CERAMICS ; REFRACTORIES; TREATMENT OF NATURAL STONE 5

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 4

Top 15 of 28 technology areas

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Multi-domain

Claim Depth Simple

Velocity Declining

Where it ranks

Overall rank by patents

#1,638

Across all tracked assignees

Innovation Score

45.5 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 Citizen Electronics Co., Ltd. hold?

Citizen Electronics Co., Ltd. holds 251 US granted patents filed between 2015 and 2025, spanning 28 technology areas.

What is Citizen Electronics Co., Ltd.'s Innovation Score?

Citizen Electronics Co., Ltd. has an Innovation Score of 45.5 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Citizen Electronics Co., Ltd. focus on?

Citizen Electronics Co., Ltd.'s top technology area is H10H (INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS) with 111 patents. The company has filed patents in 28 CPC subclasses total.

Is Citizen Electronics Co., Ltd.'s patent filing rate increasing or decreasing?

Citizen Electronics Co., Ltd.'s recent filing velocity is -74% compared to the prior five-year period. Filing activity has slowed relative to earlier years.

What does claim depth mean for Citizen Electronics Co., Ltd.'s patents?

Citizen Electronics Co., Ltd.'s patents average 9.8 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Citizen Electronics 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

Citizen's 251 grants land it in the top 23% 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 - Citizen ranks #1,638 of 50,000. Top 50 holders
Most of this portfolio concentrates in H10H - see who else leads that technology area. H10H 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.