Where does Hitachi Mitsubishi Hydro Corporation rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Hitachi Mitsubishi Hydro Corporation ranks #21,231 of 50,000 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 Mitsubishi Hydro Corporation hold?

Hitachi Mitsubishi Hydro Corporation holds 13 US utility patents granted between 2016 and 2025, spanning 7 technology areas.

What is Hitachi Mitsubishi Hydro Corporation's Innovation Score?

Hitachi Mitsubishi Hydro Corporation has an Innovation Score of 29.1 out of 100 (top 71% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Hitachi Mitsubishi Hydro Corporation's patent grant rate increasing or decreasing?

Hitachi Mitsubishi Hydro Corporation's recent grant velocity is +150% 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 Mitsubishi Hydro Corporation's patents?

Hitachi Mitsubishi Hydro Corporation's patents average 6.5 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 Mitsubishi Hydro Corporation 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 Mitsubishi Hydro Corporation

Q: What technology areas does Hitachi Mitsubishi Hydro Corporation focus on?

Hitachi Mitsubishi Hydro Corporation's top technology area is H02P (CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS) with 10 patents. Grants appear in 7 CPC subclasses total.

USPTO PatentsView assignee record - 13 granted patents across 7 technology areas, recorded in grant years 2016–2025. 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: H02P (CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS).

Compiled by PlainPatent · May 15, 2026

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Hitachi ranks #21,231 of 50,000 tracked US assignees by granted-patent volume, with 13 patents across 7 technology areas.

#21,231
of 50,000 US assignees by volume: Top 71%
by Innovation Score (29.1/100): 6.5
avg claims per patent: +150%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R21231 · Foreign Corporation #21,231 · 13 grants

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

GRANTS-MICRO 13 grants
MID-PACK #21,231/50,000
PHOTO-FINISH HD LIFESCIENCES
CPC-NARROW H02P · 7 areas
INNOV-THIN 29.1/100
CLAIMS-SPARSE 6.5 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +150% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: HD Lifesciences Llc (±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.

Qualcomm Incorporated · highest

85
Hitachi Mitsubishi H… · this assignee

29
3D Lighting Innovati… · lowest

7

What this shows Hitachi's Innovation Score is 29.1/100 (top 71% 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.

Where Hitachi's grants concentrate

Hitachi Mitsubishi Hydro Corporation is a focused PatentsView assignee: 7 CPC subclasses with 76.9% of grants classified under H02P (CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS). Peak complete grant year is 2020 (2 grants) versus a trough of 1 in 2016. By volume, Hitachi sits between HD Lifesciences Llc and HOLY Stone Enierprise Co., Ltd..

HD Lifesciences

13
Heathkit

13
Hirschvogel Umfor…

13
Hiscene Informati…

13
Hizero

13
HM Clause S

13
HOEY

13
HOLY Stone Enierp…

13
Hitachi Mitsubish… ◀

13

What this shows Hitachi holds 13 patents at rank #21,217, 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 #21,217 in granted patent volume.

Leaders in H02P (Control OR Regulation OF Electric Motors)

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)

29 Top 71% higher than 29% 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 · 2016–2025

Grants by year

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

View data table

Hitachi Mitsubishi Hydro Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	1	7.7%
2019	1	7.7%
2020	2	15.4%
2022	1	7.7%
2024	2	15.4%
2025partial year	6	46.2%

Which technologies does Hitachi Mitsubishi Hydro Corporation patent most?

H02P - CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS 10

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 7

Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION 7

F03B - MACHINES OR ENGINES FOR LIQUIDS 5

F05B - INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G 4

H02K - DYNAMO-ELECTRIC MACHINES 1

H02J - CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY 1

Top 7 of 7 technology areas

Where it ranks

Overall rank by patents

#21,231

of 50,000 tracked assignees

Innovation Score

29.1 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

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.