USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Hitachi Koki Co., Ltd.

USPTO PatentsView assignee record - 160 granted patents across 55 technology areas, active 2015–2021. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. 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 byPlainPatent Editorial, US Patent Intelligence Editorial Team · May 15, 2026

Explore the portfolio See the ranking

160

Total patents granted

CPC technology areas

9.1

Avg claims per patent

-99%

5-year filing velocity

The verdict

Hitachi holds 160 US patents across 55 technology areas, rank #2,439 of 50,000 tracked assignees.

#2,439
of 50,000 US assignees by volume: Top 17%
by Innovation Score (48.0/100): 9.1
avg claims per patent: -99%
filing velocity, last 5 yrs

Portfolio overview

Hitachi Koki Co., Ltd. has been granted 160 US utility patents between 2015 and 2021, placing Hitachi Koki Co., Ltd. at rank #2,439 across all assignees tracked by PlainPatent. This portfolio spans 55 distinct Cooperative Patent Classification (CPC) subclasses, averaging 9.1 claims per patent with primary concentration in 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). As a Foreign Corporation, Hitachi Koki Co., Ltd. is one of the broader-portfolio assignees in the PatentsView dataset. By volume, Hitachi sits between Fina Technology, Inc. (160 patents, rank #2,435) and Mitsubishi Pencil Company, Limited (160 patents, rank #2,443) - the closest US assignees by grant volume. The composite Innovation Score of 48.0/100 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 1 grants, compared with 159 in the 2015–2019 window, a -99% shift in five-year velocity. A cooling filing rate may reflect portfolio consolidation, shifting priorities, or reduced R&D throughput. 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. Hitachi Koki Co., Ltd.'s 9.1 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a multi-domain presence across 55 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Hitachi Koki Co., Ltd. against peers pursuing similar technology classes.

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.

Hitachi's Innovation Score vs. every tracked assignee

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

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

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

Patent Moat Analysis

Portfolio Volume Moderate

Tech Breadth Multi-domain

Claim Depth Simple

Velocity Declining

Where it ranks

Overall rank by patents

#2,439

Across all tracked assignees

Innovation Score

48.0 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 Hitachi Koki Co., Ltd. hold?

Hitachi Koki Co., Ltd. holds 160 US granted patents filed 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. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

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. The company has filed patents in 55 CPC subclasses total.

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

Hitachi Koki Co., Ltd.'s recent filing velocity is -99% compared to the prior five-year period. Filing 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 relatively simple claim structure, typical for focused inventions.

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.

How to use this portfolio

Hitachi's 160 grants land it in the top 17% 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 - Hitachi ranks #2,439 of 50,000. Top 50 holders
Most of this portfolio concentrates in B25F - see who else leads that technology area. B25F 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.