Where does Hitachi Koki Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Hitachi Koki Co., Ltd. ranks #2,439 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 Hitachi Koki Co., Ltd. hold?

Hitachi Koki Co., Ltd. holds 160 US utility patents granted between 2015 and 2021, spanning 55 technology areas.

What is Hitachi Koki Co., Ltd.'s Innovation Score?

Hitachi Koki Co., Ltd. has an Innovation Score of 48.0 out of 100 (top 17% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Hitachi Koki Co., Ltd.'s patent grant rate increasing or decreasing?

Hitachi Koki Co., Ltd.'s recent grant velocity is -99% 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 Hitachi Koki Co., Ltd.'s patents?

Hitachi Koki Co., Ltd.'s patents average 9.1 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 Hitachi Koki 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

Hitachi Koki Co., Ltd.

Q: What technology areas does Hitachi Koki Co., Ltd. focus on?

Hitachi Koki Co., Ltd.'s top technology area is B25F (Combination OR Multi-purpose Tools NOT Otherwise Provided FOR; Details OR Components OF Portable Power-driven Tools NOT Particularly Related TO THE Operations Performed AND NOT Otherwise Provided FOR) with 41 patents, ranking #9 of 229 assignees active in that subclass. Grants appear in 55 CPC subclasses total.

USPTO PatentsView assignee record - 160 granted patents across 55 technology areas, recorded in grant years 2015–2021. 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: B25F (Combination OR Multi-purpose Tools NOT Otherwise Provided FOR; Details OR Components OF Portable Power-driven Tools NOT Particularly Related TO THE Operations Performed AND NOT Otherwise Provided FOR).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Hitachi ranks #2,439 of 49,997 tracked US assignees by granted-patent volume, with 160 patents across 55 technology areas.

#2,439
of 49,997 US assignees by volume: Top 17%
by Innovation Score (48.0/100): 9.1
avg claims per patent: -99%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R2439 · Foreign Corporation #2,439 · 160 grants

GRANTS-MID · TOP-DECILE · PHOTO-FINISH · CPC-WIDE · INNOV-PAR · CLAIMS-PAR · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-MID 160 grants
TOP-DECILE #2,439/49,997
PHOTO-FINISH Fina Technology
CPC-WIDE B25F · 55 areas
INNOV-PAR 48.0/100
CLAIMS-PAR 9.1 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -99% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Fina Technology, Inc. (±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 Hitachi’s 48.0 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 (37%) Velocity 0.0 pts (0%) Breadth 25.0 pts (52%) Claim depth 5.5 pts (11%)

Qualcomm Incorporated · highest

85
Hitachi Koki · this assignee

48
Leica Instruments… · near

48
Mitel Networks · near

48
The University of… · near

48
Zynga · near

48
3D Lighting… · lowest

7

What this shows Hitachi's Innovation Score is 48.0/100 (top 17% 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 Hitachi?

Each dot is one of Hitachi’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). Hitachi’s own 9.1 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.

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

How Hitachi's grant cadence moved

Between 2020–2024, Hitachi Koki Co., Ltd. received 1 grants versus 159 in 2015–2019 (-99% equal-window velocity, below median growth). Across complete PatentsView years, output peaked in 2015 at 43 grants and bottomed in 2021 at 1. Lead class B25F accounts for 25.6% of the portfolio across 55 subclasses. Volume neighbours: Fina Technology, Inc. (#2,435) and Mitsubishi Pencil Company, Limited (#2,443).

Fina Technology

160
Fronius Internati…

160
GE Global Sourcing

160
Globe (Jiangsu)

160
IMEC

160
Innovative Techno…

160
Karl Storz Imaging

160
Mitsubishi Pencil

160
Hitachi Koki ◀

160

What this shows Hitachi holds 160 patents at rank #2,439, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Hitachi

By rank, the assignees closest to #2,439 in granted patent volume.

Leaders in B25F (Combination OR Multi-purpose Tools)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Hitachi, neither rank-band nor same-CPC leaders (those blocks stay above). In B25F (Combination OR Multi-purpose Tools), Hitachi ranks #9 of 229 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (48 here).

Mitel Networks Corporation 48 Zynga Inc. 48 Leica Instruments (Singapore) Pte. Ltd 48 The University of Western Australia 48

Similar claim depth

Nearest assignees by average claims per patent (9.1 here).

Institute OF Nuclear Energy Research, Atomic Energy Council, Executive Yuan 9.1 avg Ishida Co., Ltd. 9.1 avg UPL Ltd 9.1 avg Koito Manufacturing Co., Ltd. 9.1 avg

Hitachi's Innovation Score vs. every tracked assignee

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

48 Top 17% higher than 83% 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 · 2015–2021

Grants by year

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

View data table

Hitachi Koki Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	43	26.9%
2016	43	26.9%
2017	40	25.0%
2018	28	17.5%
2019	5	3.1%
2021	1	0.6%

Which technologies does Hitachi Koki Co., Ltd. patent most?

B25F - Combination OR Multi-purpose Tools NOT Otherwise Provided FOR; Details OR Components OF Portable Power-driven Tools NOT Particularly Related TO THE Operations Performed AND NOT Otherwise Provided FOR 41

H02K - Dynamo-electric Machines 23

B04B - Centrifuges 15

B23D - PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; Like Operations FOR Working Metal BY Removing Material, NOT Otherwise Provided FOR 15

B25B - Tools OR Bench Devices NOT Otherwise Provided FOR, FOR Fastening, Connecting, Disengaging OR Holding 14

H02P - Control OR Regulation OF Electric Motors, Electric Generators OR Dynamo-electric CONVERTERS; Controlling Transformers, Reactors OR Choke Coils 12

B27B - Saws FOR Wood OR Similar MATERIAL; Components OR Accessories Therefor 12

F02B - Internal-combustion Piston ENGINES; Combustion Engines IN General 10

Y10T - Technical Subjects Covered BY Former US Classification 10

A01D - HARVESTING; Mowing 10

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 8

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 7

H02J - Circuit Arrangements OR Systems FOR Supplying OR Distributing Electric POWER; Systems FOR Storing Electric Energy 7

A01G - HORTICULTURE; Cultivation OF Vegetables, Flowers, Rice, Fruit, Vines, Hops OR SEAWEED; FORESTRY; Watering 7

B25D - Percussive Tools 6

Top 15 of 55 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

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

Hitachi Koki Co., Ltd.'s lead technology class is B25F (Combination OR Multi-purpose Tools NOT Otherwise Provided FOR; Details OR Components OF Portable Power-driven Tools NOT Particularly Related TO THE Operations Performed AND NOT Otherwise Provided FOR), 25.6% of its portfolio - see every assignee active in that class. Explore B25F
Ranked #2,439 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Hitachi Koki Co., Ltd. against Fina Technology, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 48.0/100 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.