Where does Hitachi Tool Engineering, Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Hitachi Tool Engineering, Ltd. ranks #35,709 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 Tool Engineering, Ltd. hold?

Hitachi Tool Engineering, Ltd. holds 7 US utility patents granted between 2016 and 2018, spanning 5 technology areas.

What is Hitachi Tool Engineering, Ltd.'s Innovation Score?

Hitachi Tool Engineering, Ltd. has an Innovation Score of 21.9 out of 100 (9th 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 Hitachi Tool Engineering, Ltd. focus on?

Hitachi Tool Engineering, Ltd.'s top technology area is Y10T (Technical Subjects Covered BY Former US Classification) with 7 patents, ranking #1,744 of 9,657 assignees active in that subclass. Grants appear in 5 CPC subclasses total.

Is Hitachi Tool Engineering, Ltd.'s patent grant rate increasing or decreasing?

Hitachi Tool Engineering, Ltd.'s recent grant velocity is -100% 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 Tool Engineering, Ltd.'s patents?

Hitachi Tool Engineering, Ltd.'s patents average 11.4 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 Tool Engineering, 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 Tool Engineering, Ltd.

USPTO PatentsView assignee record - 7 granted patents across 5 technology areas, recorded in grant years 2016–2018. 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: Y10T (Technical Subjects Covered BY Former US Classification).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Hitachi ranks #35,709 of 49,997 tracked US assignees by granted-patent volume, with 7 patents across 5 technology areas.

#35,709
of 49,997 US assignees by volume: 9th percentile
by Innovation Score (21.9/100): 11.4
avg claims per patent: -100%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R35709 · Foreign Corporation #35,709 · 7 grants

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

GRANTS-MICRO 7 grants
MID-PACK #35,709/49,997
PHOTO-FINISH Hiconics Eco-energy…
CPC-NARROW Y10T · 5 areas
INNOV-THIN 21.9/100
CLAIMS-PAR 11.4 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -100% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Hiconics Eco-energy Drive Technology 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 Hitachi’s 21.9 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 7.2 pts (33%) Velocity 0.0 pts (0%) Breadth 7.9 pts (36%) Claim depth 6.9 pts (31%)

Qualcomm Incorporated · highest

85
Hitachi Tool… · this assignee

22
3D Lighting… · lowest

7

What this shows Hitachi's Innovation Score is 21.9/100 (9th 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 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 11.4 claims/patent is at or below the 12.1 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.

Where Hitachi's grants concentrate

Hitachi Tool Engineering, Ltd. is a focused PatentsView assignee: 5 CPC subclasses with 100% of grants classified under Y10T (Technical Subjects Covered BY Former US Classification). Peak complete grant year is 2016 (4 grants) versus a trough of 1 in 2017. By volume, Hitachi sits between Hiconics Eco-energy Drive Technology Co., Ltd. and HKI Systems and Service LLC.

Hiconics Eco-ener…

7
Hiconics Eco-ener…

7
High Voltage Grap…

7
Highyag Lasertech…

7
Hitachi Zosen Fuk…

7
Hitgen

7
Hithink Financial…

7
HKI Systems and S…

7
Hitachi Tool Engi… ◀

7

What this shows Hitachi holds 7 patents at rank #35,645, 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 #35,645 in granted patent volume.

Leaders in Y10T (Technical Subjects Covered BY Former US Classification)

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, grant velocity, technology breadth, and claim depth (0–100)

22 9th percentile higher than 9% 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 · 2016–2018

Grants by year

Teal-shaded recent years (2020–present) versus the 2016–2019 baseline. Full figures in the table below.

View data table

Hitachi Tool Engineering, Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	4	57.1%
2017	1	14.3%
2018	2	28.6%

Which technologies does Hitachi Tool Engineering, Ltd. patent most?

Y10T - Technical Subjects Covered BY Former US Classification 7

B23C - Milling 5

B23B - TURNING; Boring 3

C23C - Coating Metallic MATERIAL; Coating Material With Metallic MATERIAL; Surface Treatment OF Metallic Material BY Diffusion Into THE Surface, BY Chemical Conversion OR SUBSTITUTION; Coating BY Vacuum Evaporation, BY Sputtering, BY ION Implantation OR BY Chemical Vapour Deposition, IN General 3

B05D - Processes FOR Applying Fluent Materials TO Surfaces, IN General 1

Top 5 of 5 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 Tool Engineering, Ltd.'s patent record in context - here's where to go next.

Hitachi Tool Engineering, Ltd.'s lead technology class is Y10T (Technical Subjects Covered BY Former US Classification), 100% of its portfolio - see every assignee active in that class. Explore Y10T
Ranked #35,709 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Hitachi Tool Engineering, Ltd. against Hiconics Eco-energy Drive Technology Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 21.9/100 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.