Where does Tombow Pencil Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Tombow Pencil Co., Ltd. ranks #15,705 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 Tombow Pencil Co., Ltd. hold?

Tombow Pencil Co., Ltd. holds 19 US utility patents granted between 2015 and 2025, spanning 9 technology areas.

What is Tombow Pencil Co., Ltd.'s Innovation Score?

Tombow Pencil Co., Ltd. has an Innovation Score of 33.1 out of 100 (43rd 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 Tombow Pencil Co., Ltd. focus on?

Tombow Pencil Co., Ltd.'s top technology area is B65H (Handling Thin OR Filamentary Material, e.g. Sheets, Webs, Cables) with 6 patents, ranking #200 of 1,019 assignees active in that subclass. Grants appear in 9 CPC subclasses total.

Is Tombow Pencil Co., Ltd.'s patent grant rate increasing or decreasing?

Tombow Pencil Co., Ltd.'s recent grant velocity is +140% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

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

Tombow Pencil Co., Ltd.'s patents average 7.3 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 Tombow Pencil 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

Tombow Pencil Co., Ltd.

USPTO PatentsView assignee record - 19 granted patents across 9 technology areas, recorded in grant years 2015–2025. 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: B65H (Handling Thin OR Filamentary Material, e.g. Sheets, Webs, Cables).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Tombow ranks #15,705 of 49,997 tracked US assignees by granted-patent volume, with 19 patents across 9 technology areas.

#15,705
of 49,997 US assignees by volume: 43rd percentile
by Innovation Score (33.1/100): 7.3
avg claims per patent: +140%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R15705 · Foreign Corporation #15,705 · 19 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-MICRO 19 grants
MID-PACK #15,705/49,997
PHOTO-FINISH Throughtek Technolog…
CPC-NARROW B65H · 9 areas
INNOV-THIN 33.1/100
CLAIMS-SPARSE 7.3 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +140% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Throughtek Technology (SHENZHEN) Co., Ltd. (±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.

How Tombow’s 33.1 Innovation Score adds up

The same four weighted components behind every Innovation Score on PlainPatent: portfolio volume, grant velocity, technology breadth, and claim depth.

Volume 10.3 pts (31%) Velocity 7.8 pts (24%) Breadth 10.6 pts (32%) Claim depth 4.4 pts (13%)

Qualcomm Incorporated · highest

85
Tombow Pencil · this assignee

33
3D Lighting… · lowest

7

What this shows Tombow's Innovation Score is 33.1/100 (43rd 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.

Does more volume mean deeper claims for Tombow?

Each dot is one of Tombow’s 8 nearest volume peers (same corpus rank neighbourhood as the chart above), placed by total granted patents (horizontal) against average claims per patent (vertical). Tombow’s own 7.3 claims/patent is at or below the 16.2 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

Tombow vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where Tombow's grants concentrate

Tombow Pencil Co., Ltd. is a focused PatentsView assignee: 9 CPC subclasses with 31.6% of grants classified under B65H (Handling Thin OR Filamentary Material, e.g. Sheets, Webs, Cables). Peak complete grant year is 2024 (5 grants) versus a trough of 1 in 2018. By volume, Tombow sits between Throughtek Technology (SHENZHEN) Co., Ltd. and Trevena, Inc..

Tombow's three-year grant acceleration

Tombow Pencil Co., Ltd. shows 7 grants in 2022–2024 against only 6 in 2019–2021. That prior window is too thin for a growth multiple (rename and spin-out assignees look artificially high when the baseline is near zero), so PlainPatent withholds a ranked acceleration claim here.

Throughtek Techno…

19
Tianjin Polytechn…

19
Titanium Metals

19
Tiveni Mergeco

19
Tosho

19
Tq-systems

19
Transocean Innova…

19
Trevena

19
Tombow Pencil ◀

19

What this shows Tombow holds 19 patents at rank #15,683, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Tombow

By rank, the assignees closest to #15,683 in granted patent volume.

Leaders in B65H (Handling Thin OR Filamentary Material)

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

Tombow's Innovation Score vs. every tracked assignee

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

33 43rd percentile higher than 43% 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 · 2015–2025

Grants by year

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

View data table

Tombow Pencil Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	3	15.8%
2018	1	5.3%
2019	1	5.3%
2020	4	21.1%
2021	1	5.3%
2022	1	5.3%
2023	1	5.3%
2024	5	26.3%
2025partial year	2	10.5%

Which technologies does Tombow Pencil Co., Ltd. patent most?

B65H - Handling Thin OR Filamentary Material, e.g. Sheets, Webs, Cables 6

B43L - Articles FOR Writing OR Drawing UPON; ; Writing OR Drawing AIDS;; Accessories FOR Writing OR Drawing 4

B43M - Bureau Accessories NOT Otherwise Provided FOR 3

B32B - Layered Products, i.e. Products Built-up OF Strata OF Flat OR Non-flat, e.g. Cellular OR Honeycomb, Form 2

C09J - ADHESIVES; Non-mechanical Aspects OF Adhesive Processes IN GENERAL; Adhesive Processes NOT Provided FOR ELSEWHERE; USE OF Materials AS Adhesives 1

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

B41J - TYPEWRITERS; Selective Printing Mechanisms, i.e. Mechanisms Printing Otherwise Than From A FORME; Correction OF Typographical Errors 1

B42F - Sheets Temporarily Attached TOGETHER; Filing APPLIANCES; File CARDS; Indexing 1

A47B - TABLES; DESKS; Office FURNITURE; CABINETS; DRAWERS; General Details OF Furniture 1

Top 9 of 9 technology areas

More on this record

Data Source

USPTO PatentsView, US granted patents 2015–2025

View all rankings → How is Innovation Score calculated?

What to do with this data

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

Tombow Pencil Co., Ltd.'s lead technology class is B65H (Handling Thin OR Filamentary Material, e.g. Sheets, Webs, Cables), 31.6% of its portfolio - see every assignee active in that class. Explore B65H
Ranked #15,705 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Tombow Pencil Co., Ltd. against Throughtek Technology (SHENZHEN) Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 33.1/100 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.