Where does Mitsubishi Pencil Company, Limited rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Mitsubishi Pencil Company, Limited ranks #2,443 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 Mitsubishi Pencil Company, Limited hold?

Mitsubishi Pencil Company, Limited holds 160 US utility patents granted between 2015 and 2025, spanning 39 technology areas.

What is Mitsubishi Pencil Company, Limited's Innovation Score?

Mitsubishi Pencil Company, Limited has an Innovation Score of 53.9 out of 100 (top 8% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Mitsubishi Pencil Company, Limited focus on?

Mitsubishi Pencil Company, Limited's top technology area is B43K (Implements FOR Writing OR Drawing) with 71 patents, ranking #1 of 82 assignees active in that subclass. Grants appear in 39 CPC subclasses total.

Is Mitsubishi Pencil Company, Limited's patent grant rate increasing or decreasing?

Mitsubishi Pencil Company, Limited's recent grant velocity is +7% compared to the prior five-year period (grant years, not application filing dates). The company is maintaining or growing its granted-patent output.

What does claim depth mean for Mitsubishi Pencil Company, Limited's patents?

Mitsubishi Pencil Company, Limited's patents average 6.2 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 Mitsubishi Pencil Company, Limited 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

Mitsubishi Pencil Company, Limited

USPTO PatentsView assignee record - 160 granted patents across 39 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: B43K (Implements FOR Writing OR Drawing).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Mitsubishi ranks #2,443 of 49,997 tracked US assignees by granted-patent volume, with 160 patents across 39 technology areas.

#2,443
of 49,997 US assignees by volume: Top 8%
by Innovation Score (53.9/100): 6.2
avg claims per patent: +7%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R2443 · Foreign Corporation #2,443 · 160 grants

GRANTS-MID · TOP-DECILE · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-FLAT · BOOK-FULL

GRANTS-MID 160 grants
TOP-DECILE #2,443/49,997
PHOTO-FINISH Hitachi Koki
CPC-FOCUS B43K · 39 areas
INNOV-PAR 53.9/100
CLAIMS-SPARSE 6.2 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-FLAT +7% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Hitachi Koki 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 Mitsubishi’s 53.9 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 17.6 pts (33%) Velocity 10.5 pts (19%) Breadth 22.1 pts (41%) Claim depth 3.7 pts (7%)

Qualcomm Incorporated · highest

85
Pentair Water Pool… · near

54
Beijing E-Town… · near

54
Chang Gung University · near

54
Dongguan Hongyu… · near

54
Mitsubishi Pencil · this assignee

54
3D Lighting… · lowest

7

What this shows Mitsubishi's Innovation Score is 53.9/100 (top 8% 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 Mitsubishi?

Each dot is one of Mitsubishi’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). Mitsubishi’s own 6.2 claims/patent is at or below the 15.3 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Mitsubishi's grants concentrate

Mitsubishi Pencil Company, Limited is a focused PatentsView assignee: 39 CPC subclasses with 44.4% of grants classified under B43K (Implements FOR Writing OR Drawing). Peak complete grant year is 2024 (21 grants) versus a trough of 9 in 2019. By volume, Mitsubishi sits between Hitachi Koki Co., Ltd. and Nuvoton Technology Corporation Japan.

Mitsubishi's three-year grant acceleration

From 2019–2021 to 2022–2024, Mitsubishi Pencil Company, Limited moved from 33 to 52 grants (1.58x the prior three-year total, a multiple, not a CAGR). Among 3,296 tracked assignees with ≥100 grants and ≥20 prior-period grants, that multiple ranks #393. See the growth leaderboard.

Hitachi Koki

160
IMEC

160
Innovative Techno…

160
Karl Storz Imaging

160
Mujin

160
Monolithic Power…

160
Ningbo Geely Auto…

160
Nuvoton Technolog…

160
Mitsubishi Pencil ◀

160

What this shows Mitsubishi holds 160 patents at rank #2,443, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Mitsubishi

By rank, the assignees closest to #2,443 in granted patent volume.

Leaders in B43K (Implements FOR Writing OR Drawing)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Mitsubishi, neither rank-band nor same-CPC leaders (those blocks stay above). In B43K (Implements FOR Writing OR Drawing), Mitsubishi ranks #1 of 82 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (54 here).

Beijing E-Town Semiconductor Technology Co., Ltd. 54 Chang Gung University 54 Dongguan Hongyu Plastic Co., Ltd. 54 Pentair Water Pool and Spa, Inc. 54

Similar claim depth

Nearest assignees by average claims per patent (6.2 here).

Grip Holdings LLC 6.2 avg Tsubakimoto Chain Co. 6.2 avg NOK Corporation 6.2 avg OSG Corporation 6.2 avg

Mitsubishi's Innovation Score vs. every tracked assignee

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

54 Top 8% higher than 92% 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

Mitsubishi Pencil Company, Limited patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	10	6.3%
2016	18	11.3%
2017	18	11.3%
2018	16	10.0%
2019	9	5.6%
2020	11	6.9%
2021	13	8.1%
2022	13	8.1%
2023	18	11.3%
2024	21	13.1%
2025partial year	13	8.1%

Which technologies does Mitsubishi Pencil Company, Limited patent most?

B43K - Implements FOR Writing OR Drawing 71

A45D - Hairdressing OR Shaving Equipment ; Equipment FOR Cosmetics OR Cosmetic Treatments, e.g. FOR Manicuring OR Pedicuring 28

C09D - Coating Compositions, e.g. Paints, Varnishes OR LACQUERS; Filling PASTES; Chemical Paint OR INK REMOVERS; INKS; Correcting FLUIDS; WOODSTAINS; Pastes OR Solids FOR Colouring OR PRINTING; USE OF Materials Therefor 27

A61Q - Specific USE OF Cosmetics OR Similar Toiletry Preparations 12

A61K - Preparations FOR Medical, Dental OR Toiletry Purposes 12

C08K - Use of inorganic or non-macromolecular organic substances as compounding ingredients 9

B43L - Articles FOR Writing OR Drawing UPON; ; Writing OR Drawing AIDS;; Accessories FOR Writing OR Drawing 7

G02B - Optical Elements, Systems OR Apparatus 6

G06F - Electric Digital Data Processing 6

A46B - Brushes 5

B05C - Apparatus FOR Applying Fluent Materials TO Surfaces, IN General 5

C08L - Compositions OF Macromolecular Compounds 4

A61M - Devices FOR Introducing Media Into, OR Onto, THE Body ; Devices FOR Transducing Body Media OR FOR Taking Media From THE Body ; Devices FOR Producing OR Ending Sleep OR Stupor 3

B65D - Containers FOR Storage OR Transport OF Articles OR Materials, e.g. Bags, Barrels, Bottles, Boxes, Cans, Cartons, Crates, Drums, Jars, Tanks, Hoppers, Forwarding CONTAINERS; Accessories, Closures, OR Fittings THEREFOR; Packaging ELEMENTS; Packages 3

A61B - DIAGNOSIS; SURGERY; Identification 2

Top 15 of 39 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

Mitsubishi Pencil Company, Limited's patent record in context - here's where to go next.

Mitsubishi Pencil Company, Limited's lead technology class is B43K (Implements FOR Writing OR Drawing), 44.4% of its portfolio - see every assignee active in that class. Explore B43K
Ranked #2,443 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Mitsubishi Pencil Company, Limited against Hitachi Koki Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 53.9/100 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.