Where does Hitachi-Johnson Controls Air Conditioning, Inc. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Hitachi-Johnson Controls Air Conditioning, Inc. ranks #3,842 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-Johnson Controls Air Conditioning, Inc. hold?

Hitachi-Johnson Controls Air Conditioning, Inc. holds 94 US utility patents granted between 2017 and 2025, spanning 31 technology areas.

What is Hitachi-Johnson Controls Air Conditioning, Inc.'s Innovation Score?

Hitachi-Johnson Controls Air Conditioning, Inc. has an Innovation Score of 41.6 out of 100 (top 33% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Hitachi-Johnson Controls Air Conditioning, Inc.'s patent grant rate increasing or decreasing?

Hitachi-Johnson Controls Air Conditioning, Inc.'s recent grant velocity is +66% 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-Johnson Controls Air Conditioning, Inc.'s patents?

Hitachi-Johnson Controls Air Conditioning, Inc.'s patents average 8.2 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-Johnson Controls Air Conditioning, Inc.

Q: What technology areas does Hitachi-Johnson Controls Air Conditioning, Inc. focus on?

Hitachi-Johnson Controls Air Conditioning, Inc.'s top technology area is F25B (Refrigeration Machines, Plants OR SYSTEMS; Combined Heating AND Refrigeration SYSTEMS; Heat Pump Systems) with 46 patents. Grants appear in 31 CPC subclasses total.

Q: How is the Hitachi-Johnson Controls Air Conditioning, Inc. 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 - 94 granted patents across 31 technology areas, recorded in grant years 2017–2025. 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: F25B (Refrigeration Machines, Plants OR SYSTEMS; Combined Heating AND Refrigeration SYSTEMS; Heat Pump Systems).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Hitachi-johnson ranks #3,842 of 49,997 tracked US assignees by granted-patent volume, with 94 patents across 31 technology areas.

#3,842
of 49,997 US assignees by volume: Top 33%
by Innovation Score (41.6/100): 8.2
avg claims per patent: +66%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R3842 · Foreign Corporation #3,842 · 94 grants

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

GRANTS-SMALL 94 grants
TOP-DECILE #3,842/49,997
PHOTO-FINISH East China Universit…
CPC-FOCUS F25B · 31 areas
INNOV-PAR 41.6/100
CLAIMS-PAR 8.2 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +66% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: East China University of Science and Technology (±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
Hgci · near

42
Hitachi-Johnson… · this assignee

42
RareCyte · near

42
Riverbed Technology · near

42
Supernus Pharmaceuti… · near

42
3D Lighting… · lowest

7

What this shows Hitachi-johnson's Innovation Score is 41.6/100 (top 33% 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-johnson's grants concentrate

Hitachi-Johnson Controls Air Conditioning, Inc. is a focused PatentsView assignee: 31 CPC subclasses with 48.9% of grants classified under F25B (Refrigeration Machines, Plants OR SYSTEMS; Combined Heating AND Refrigeration SYSTEMS; Heat Pump Systems). Peak complete grant year is 2019 (25 grants) versus a trough of 1 in 2017. By volume, Hitachi-johnson sits between East China University of Science and Technology and Inno-Sports Co., Ltd..

Hitachi-johnson's three-year grant acceleration

From 2019–2021 to 2022–2024, Hitachi-Johnson Controls Air Conditioning, Inc. moved from 70 to 13 grants (0.19x the prior three-year total, a multiple, not a CAGR). See the growth leaderboard.

East China Univer…

94
Endura Products

94
Globe Union Indus…

94
Heptagon Micro Op…

94
Howard Hughes Med…

94
Huizhou China Sta…

94
Imperial College…

94
Inno-sports

94
Hitachi-johnson C… ◀

94

What this shows Hitachi-Johnson holds 94 patents at rank #3,842, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Hitachi-Johnson

By rank, the assignees closest to #3,842 in granted patent volume.

Leaders in F25B (Refrigeration Machines)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Hitachi-Johnson, neither rank-band nor same-CPC leaders (those blocks stay above).

Similar innovation score

Nearest assignees by Innovation Score (42 here).

Riverbed Technology LLC 42 Hgci, Inc. 42 RareCyte, Inc. 42 Supernus Pharmaceuticals, Inc. 42

Similar claim depth

Nearest assignees by average claims per patent (8.2 here).

Meiji Seika Pharma Co., Ltd. 8.2 avg Wapp Tech Corp. 8.2 avg Callaway Golf Company 8.2 avg Dr. Ing. h.c. F. Porsche AG 8.2 avg

Hitachi-johnson's Innovation Score vs. every tracked assignee

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

42 Top 33% higher than 67% 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 · 2017–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2017–2019 baseline. Full figures in the table below.

View data table

Hitachi-Johnson Controls Air Conditioning, Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2017	1	1.1%
2018	9	9.6%
2019	25	26.6%
2020	25	26.6%
2021	20	21.3%
2022	7	7.4%
2023	3	3.2%
2024	3	3.2%
2025partial year	1	1.1%

Which technologies does Hitachi-Johnson Controls Air Conditioning, Inc. patent most?

F25B - Refrigeration Machines, Plants OR SYSTEMS; Combined Heating AND Refrigeration SYSTEMS; Heat Pump Systems 46

F24F - AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR Currents FOR Screening 39

F04C - Rotary-piston, OR Oscillating-piston, Positive-displacement Machines FOR Liquids ; Rotary-piston, OR Oscillating-piston, Positive-displacement Pumps 19

Y02B - Climate Change Mitigation Technologies Related TO Buildings, e.g. Housing, House Appliances OR Related End-user Applications 17

F28D - Heat-exchange Apparatus, NOT Provided FOR IN Another Subclass, IN Which THE Heat-exchange Media DO NOT Come Into Direct Contact 12

F28F - Details OF Heat-exchange AND Heat-transfer Apparatus, OF General Application 11

H02P - Control OR Regulation OF Electric Motors, Electric Generators OR Dynamo-electric CONVERTERS; Controlling Transformers, Reactors OR Choke Coils 8

F04B - Positive-displacement Machines FOR LIQUIDS; Pumps 6

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 6

F01C - Rotary-piston OR Oscillating-piston Machines OR Engines 5

C09K - Materials FOR Miscellaneous Applications, NOT Provided FOR Elsewhere 4

F04D - Non-positive-displacement Pumps 3

G05B - Control OR Regulating Systems IN GENERAL; Functional Elements OF Such SYSTEMS; Monitoring OR Testing Arrangements FOR Such Systems OR Elements 2

F25D - REFRIGERATORS; Cold ROOMS; ICE-BOXES; Cooling OR Freezing Apparatus NOT Otherwise Provided FOR 2

C10M - Lubricating Compositions ; USE OF Chemical Substances Either Alone OR AS Lubricating Ingredients IN A Lubricating Composition 2

Top 15 of 31 technology areas

Where it ranks

Overall rank by patents

#3,842

of 49,997 tracked assignees

Innovation Score

41.6 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

What to do with this data

Hitachi-Johnson Controls Air Conditioning, Inc.'s patent record in context - here's where to go next.

Hitachi-Johnson Controls Air Conditioning, Inc.'s lead technology class is F25B (Refrigeration Machines, Plants OR SYSTEMS; Combined Heating AND Refrigeration SYSTEMS; Heat Pump Systems), 48.9% of its portfolio - see every assignee active in that class. Explore F25B
Ranked #3,842 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Hitachi-Johnson Controls Air Conditioning, Inc. against East China University of Science and Technology, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 41.6/100 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.