Where does Hitachi Industrial Equipment Systems Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Hitachi Industrial Equipment Systems Co., Ltd. ranks #1,394 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 Industrial Equipment Systems Co., Ltd. hold?

Hitachi Industrial Equipment Systems Co., Ltd. holds 302 US utility patents granted between 2015 and 2025, spanning 103 technology areas.

What is Hitachi Industrial Equipment Systems Co., Ltd.'s Innovation Score?

Hitachi Industrial Equipment Systems Co., Ltd. has an Innovation Score of 59.8 out of 100 (top 4% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Hitachi Industrial Equipment Systems Co., Ltd.'s patent grant rate increasing or decreasing?

Hitachi Industrial Equipment Systems Co., Ltd.'s recent grant velocity is +70% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Hitachi Industrial Equipment Systems Co., Ltd.'s patents?

Hitachi Industrial Equipment Systems Co., Ltd.'s patents average 9.8 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.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Hitachi Industrial Equipment Systems Co., Ltd.

Q: What technology areas does Hitachi Industrial Equipment Systems Co., Ltd. focus on?

Hitachi Industrial Equipment Systems Co., Ltd.'s top technology area is F04C (Rotary-piston, OR Oscillating-piston, Positive-displacement Machines FOR Liquids ; Rotary-piston, OR Oscillating-piston, Positive-displacement Pumps) with 101 patents, ranking #4 of 587 assignees active in that subclass. Grants appear in 103 CPC subclasses total.

Q: How is the Hitachi Industrial Equipment Systems 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 PatentsView assignee record - 302 granted patents across 103 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: F04C (Rotary-piston, OR Oscillating-piston, Positive-displacement Machines FOR Liquids ; Rotary-piston, OR Oscillating-piston, Positive-displacement Pumps).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Hitachi ranks #1,394 of 49,997 tracked US assignees by granted-patent volume, with 302 patents across 103 technology areas.

#1,394
of 49,997 US assignees by volume: Top 4%
by Innovation Score (59.8/100): 9.8
avg claims per patent: +70%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R1394 · Foreign Corporation #1,394 · 302 grants

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

GRANTS-MID 302 grants
TOP-DECILE #1,394/49,997
PHOTO-FINISH Beijing Didi…
CPC-WIDE F04C · 103 areas
INNOV-PAR 59.8/100
CLAIMS-PAR 9.8 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +70% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Beijing Didi Infinity Technology AND Development 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 59.8 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 19.7 pts (33%) Velocity 9.2 pts (15%) Breadth 25.0 pts (42%) Claim depth 5.9 pts (10%)

Qualcomm Incorporated · highest

85
Triad National… · near

60
DOW Tray · near

60
Hitachi Industrial… · this assignee

60
Sunpower · near

60
The Government of… · near

60
3D Lighting… · lowest

7

What this shows Hitachi's Innovation Score is 59.8/100 (top 4% 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 9.8 claims/patent is at or below the 14.8 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 Industrial Equipment Systems Co., Ltd. received 177 grants versus 104 in 2015–2019 (+70% equal-window velocity, above median growth). Across complete PatentsView years, output peaked in 2024 at 45 grants and bottomed in 2018 at 13. Lead class F04C accounts for 33.4% of the portfolio across 103 subclasses. Volume neighbours: Beijing Didi Infinity Technology AND Development Co., Ltd. (#1,389) and Skechers U.S.A., Inc. II (#1,397).

Hitachi's three-year grant acceleration

From 2019–2021 to 2022–2024, Hitachi Industrial Equipment Systems Co., Ltd. moved from 83 to 114 grants (1.37x 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 #547. See the growth leaderboard.

Beijing Didi Infi…

302
Briggs & Stratton

302
Daiichi Sankyo

302
ETA Manufacture H…

302
Hall Labs

302
Neoperl

302
Owens Corning Int…

302
Skechers U II

302
Hitachi Industria… ◀

302

What this shows Hitachi holds 302 patents at rank #1,393, 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 #1,393 in granted patent volume.

Leaders in F04C (Rotary-piston)

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 F04C (Rotary-piston), Hitachi ranks #4 of 587 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (60 here).

Sunpower Corporation 60 The Government of the United States, as represented by the Secretary of the Army 60 DOW Tray Co., Ltd. 60 Triad National Security, LLC 60

Similar claim depth

Nearest assignees by average claims per patent (9.8 here).

Alps Alpine Co., Ltd. 9.8 avg CCL Label, Inc. 9.8 avg Vorwerk & Co. Interholding GMBH 9.8 avg Getac Technology Corporation 9.8 avg

Hitachi's Innovation Score vs. every tracked assignee

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

60 Top 4% higher than 96% 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

Hitachi Industrial Equipment Systems Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	23	7.6%
2016	27	8.9%
2017	21	7.0%
2018	13	4.3%
2019	20	6.6%
2020	26	8.6%
2021	37	12.3%
2022	38	12.6%
2023	31	10.3%
2024	45	14.9%
2025partial year	21	7.0%

Which technologies does Hitachi Industrial Equipment Systems Co., Ltd. patent most?

F04C - Rotary-piston, OR Oscillating-piston, Positive-displacement Machines FOR Liquids ; Rotary-piston, OR Oscillating-piston, Positive-displacement Pumps 101

F04B - Positive-displacement Machines FOR LIQUIDS; Pumps 53

B41J - TYPEWRITERS; Selective Printing Mechanisms, i.e. Mechanisms Printing Otherwise Than From A FORME; Correction OF Typographical Errors 39

H02P - Control OR Regulation OF Electric Motors, Electric Generators OR Dynamo-electric CONVERTERS; Controlling Transformers, Reactors OR Choke Coils 34

F01C - Rotary-piston OR Oscillating-piston Machines OR Engines 32

H02K - Dynamo-electric Machines 26

H02M - Apparatus FOR Conversion Between AC AND AC, Between AC AND DC, OR Between DC AND DC, AND FOR USE With Mains OR Similar Power Supply SYSTEMS; Conversion OF DC OR AC Input Power Into Surge Output POWER; Control OR Regulation Thereof 25

F24F - AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR Currents FOR Screening 21

B01L - Chemical OR Physical Laboratory Apparatus FOR General USE 16

G05B - Control OR Regulating Systems IN GENERAL; Functional Elements OF Such SYSTEMS; Monitoring OR Testing Arrangements FOR Such Systems OR Elements 16

G06F - Electric Digital Data Processing 14

F04D - Non-positive-displacement Pumps 13

H01F - MAGNETS; INDUCTANCES; TRANSFORMERS; Selection OF Materials FOR Their Magnetic Properties 12

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 11

G01R - Measuring Electric VARIABLES; Measuring Magnetic Variables 9

Top 15 of 103 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 Industrial Equipment Systems Co., Ltd.'s patent record in context - here's where to go next.

Hitachi Industrial Equipment Systems Co., Ltd.'s lead technology class is F04C (Rotary-piston, OR Oscillating-piston, Positive-displacement Machines FOR Liquids ; Rotary-piston, OR Oscillating-piston, Positive-displacement Pumps), 33.4% of its portfolio - see every assignee active in that class. Explore F04C
Ranked #1,394 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Hitachi Industrial Equipment Systems Co., Ltd. against Beijing Didi Infinity Technology AND Development Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 59.8/100 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.