USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Kokuyo Co., Ltd.

USPTO PatentsView assignee record - 42 granted patents across 14 technology areas, active 2015–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: A47C (CHAIRS; SOFAS; BEDS).

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

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

7.5

Avg claims per patent

+182%

5-year filing velocity

The verdict

Kokuyo holds 42 US patents across 14 technology areas, rank #7,725 of 50,000 tracked assignees.

#7,725
of 50,000 US assignees by volume: Top 52%
by Innovation Score (34.7/100): 7.5
avg claims per patent: +182%
filing velocity, last 5 yrs

Portfolio overview

Kokuyo Co., Ltd. has been granted 42 US utility patents between 2015 and 2025, placing Kokuyo Co., Ltd. at rank #7,725 across all assignees tracked by PlainPatent. This portfolio spans 14 distinct Cooperative Patent Classification (CPC) subclasses, averaging 7.5 claims per patent with primary concentration in A47C (CHAIRS; SOFAS; BEDS). As a Foreign Corporation, Kokuyo Co., Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, Kokuyo sits between Itoki Corporation (42 patents, rank #7,721) and LGS Innovations Llc (42 patents, rank #7,729) - the closest US assignees by grant volume. The composite Innovation Score of 34.7/100 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 31 grants, compared with 11 in the 2015–2019 window, a +182% 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. Kokuyo Co., Ltd.'s 7.5 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while concentration in 14 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Kokuyo Co., Ltd. against peers pursuing similar technology classes.

Itoki

42
Jess-link Products

42
JRD Communication

42
K-fee System

42
KONG

42
Korea Railroad Re…

42
Kichler Lighting

42
LGS Innovations

42
Kokuyo ◀

42

What this shows Kokuyo holds 42 patents at rank #7,725, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Kokuyo

By rank, the assignees closest to #7,725 in granted patent volume.

Leaders in A47C (Chairs)

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

Kokuyo's Innovation Score vs. every tracked assignee

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

35 Top 52% higher than 48% 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

Kokuyo Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	2	4.8%
2016	2	4.8%
2017	1	2.4%
2018	1	2.4%
2019	5	11.9%
2020	11	26.2%
2021	6	14.3%
2022	3	7.1%
2023	1	2.4%
2024	9	21.4%
2025	1	2.4%

Which technologies does Kokuyo Co., Ltd. patent most?

A47C - CHAIRS; SOFAS; BEDS 18

Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION 4

C09J - ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES 3

B43M - BUREAU ACCESSORIES NOT OTHERWISE PROVIDED FOR 3

B65H - HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES 3

B05C - APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL 2

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 1

B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM 1

B43L - ARTICLES FOR WRITING OR DRAWING UPON; ; WRITING OR DRAWING AIDS;; ACCESSORIES FOR WRITING OR DRAWING 1

B26F - PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING 1

B31F - MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER 1

B42B - PERMANENTLY ATTACHING TOGETHER SHEETS, QUIRES OR SIGNATURES OR PERMANENTLY ATTACHING OBJECTS THERETO 1

B42F - SHEETS TEMPORARILY ATTACHED TOGETHER; FILING APPLIANCES; FILE CARDS; INDEXING 1

B26D - CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING 1

Top 14 of 14 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Focused

Claim Depth Simple

Velocity Accelerating

Where it ranks

Overall rank by patents

#7,725

Across all tracked assignees

Innovation Score

34.7 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 Kokuyo Co., Ltd. hold?

Kokuyo Co., Ltd. holds 42 US granted patents filed between 2015 and 2025, spanning 14 technology areas.

What is Kokuyo Co., Ltd.'s Innovation Score?

Kokuyo Co., Ltd. has an Innovation Score of 34.7 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Kokuyo Co., Ltd. focus on?

Kokuyo Co., Ltd.'s top technology area is A47C (CHAIRS; SOFAS; BEDS) with 18 patents. The company has filed patents in 14 CPC subclasses total.

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

Kokuyo Co., Ltd.'s recent filing velocity is +182% compared to the prior five-year period. This indicates accelerating innovation.

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

Kokuyo Co., Ltd.'s patents average 7.5 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Kokuyo 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

Kokuyo's 42 grants land it in the top 52% 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 - Kokuyo ranks #7,725 of 50,000. Top 50 holders
Most of this portfolio concentrates in A47C - see who else leads that technology area. A47C 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.