Where does Kotobuki & Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Kotobuki & Co., Ltd. ranks #8,235 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 Kotobuki & Co., Ltd. hold?

Kotobuki & Co., Ltd. holds 39 US utility patents granted between 2015 and 2024, spanning 19 technology areas.

What is Kotobuki & Co., Ltd.'s Innovation Score?

Kotobuki & Co., Ltd. has an Innovation Score of 34.8 out of 100 (49th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Kotobuki & Co., Ltd. focus on?

Kotobuki & Co., Ltd.'s top technology area is B43K (Implements FOR Writing OR Drawing) with 14 patents. Grants appear in 19 CPC subclasses total.

Is Kotobuki & Co., Ltd.'s patent grant rate increasing or decreasing?

Kotobuki & Co., Ltd.'s recent grant velocity is -23% compared to the prior five-year period (grant years, not application filing dates). Grant activity has slowed relative to earlier years.

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

Kotobuki & Co., Ltd.'s patents average 6.7 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 Kotobuki & 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.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Kotobuki & Co., Ltd.

USPTO PatentsView assignee record - 39 granted patents across 19 technology areas, recorded in grant years 2015–2024. 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: B43K (Implements FOR Writing OR Drawing).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Kotobuki ranks #8,235 of 49,997 tracked US assignees by granted-patent volume, with 39 patents across 19 technology areas.

#8,235
of 49,997 US assignees by volume: 49th percentile
by Innovation Score (34.8/100): 6.7
avg claims per patent: -23%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R8235 · Foreign Corporation #8,235 · 39 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-DOWN · BOOK-FULL

GRANTS-SMALL 39 grants
UPPER-Q #8,235/49,997
PHOTO-FINISH Japanese Foundation…
CPC-FOCUS B43K · 19 areas
INNOV-THIN 34.8/100
CLAIMS-SPARSE 6.7 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DOWN -23% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Japanese Foundation for Cancer Research (±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.

Qualcomm Incorporated · highest

85
Hamilton Associates · near

35
Kotobuki & · this assignee

35
Koyo Bearings North… · near

35
Mani · near

35
LexisNexis a… · near

35
3D Lighting… · lowest

7

What this shows Kotobuki's Innovation Score is 34.8/100 (49th percentile 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.

Where Kotobuki's grants concentrate

Kotobuki & Co., Ltd. is a focused PatentsView assignee: 19 CPC subclasses with 35.9% of grants classified under B43K (Implements FOR Writing OR Drawing). Peak complete grant year is 2019 (11 grants) versus a trough of 1 in 2017. By volume, Kotobuki sits between J.R. Simplot Company and Key Technology, Inc..

Kotobuki's three-year grant acceleration

From 2019–2021 to 2022–2024, Kotobuki & Co., Ltd. moved from 20 to 8 grants (0.40x the prior three-year total, a multiple, not a CAGR). See the growth leaderboard.

J R Simplot

39
Johnson Controls…

39
Joulwatt Technolo…

39
Japanese Foundati…

39
KSB Aktiengesells…

39
Kuang-chi Innovat…

39
Kason Industries

39
Key Technology

39
Kotobuki & ◀

39

What this shows Kotobuki holds 39 patents at rank #8,231, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Kotobuki

By rank, the assignees closest to #8,231 in granted patent volume.

Leaders in B43K (Implements FOR Writing OR Drawing)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Kotobuki, neither rank-band nor same-CPC leaders (those blocks stay above).

Similar innovation score

Nearest assignees by Innovation Score (35 here).

Hamilton Associates, Inc. 35 Mani, Inc. 35 Koyo Bearings North America LLC 35 LexisNexis, a division of Reed Elsevier Inc. 35

Kotobuki's Innovation Score vs. every tracked assignee

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

35 49th percentile higher than 49% 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 · 2015–2024

Grants by year

Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.

View data table

Kotobuki & Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	4	10.3%
2017	1	2.6%
2018	6	15.4%
2019	11	28.2%
2020	6	15.4%
2021	3	7.7%
2022	4	10.3%
2023	2	5.1%
2024	2	5.1%

Which technologies does Kotobuki & Co., Ltd. patent most?

B43K - Implements FOR Writing OR Drawing 14

A45D - Hairdressing OR Shaving Equipment ; Equipment FOR Cosmetics OR Cosmetic Treatments, e.g. FOR Manicuring OR Pedicuring 6

B01D - Separation 3

C01B - Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c 2

C01P - Indexing Scheme Relating TO Structural AND Physical Aspects OF Solid Inorganic Compounds 2

B21D - Working OR Processing OF Sheet Metal OR Metal Tubes, Rods OR Profiles Without Essentially Removing MATERIAL; Punching Metal 2

B26F - PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; Severing BY Means Other Than Cutting 2

B21K - Making Forged OR Pressed Metal Products, e.g. Horse-shoes, Rivets, Bolts OR Wheels 2

B05C - Apparatus FOR Applying Fluent Materials TO Surfaces, IN General 2

B43M - Bureau Accessories NOT Otherwise Provided FOR 2

B43L - Articles FOR Writing OR Drawing UPON; ; Writing OR Drawing AIDS;; Accessories FOR Writing OR Drawing 2

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 1

G06F - Electric Digital Data Processing 1

D05B - Sewing 1

B05B - Spraying APPARATUS; Atomising APPARATUS; Nozzles 1

Top 15 of 19 technology areas

Where it ranks

Overall rank by patents

#8,235

of 49,997 tracked assignees

Innovation Score

34.8 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

What to do with this data

Kotobuki & Co., Ltd.'s patent record in context - here's where to go next.

Kotobuki & Co., Ltd.'s lead technology class is B43K (Implements FOR Writing OR Drawing), 35.9% of its portfolio - see every assignee active in that class. Explore B43K
Ranked #8,235 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Kotobuki & Co., Ltd. against J.R. Simplot Company, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 34.8/100 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.