PlainPatent
USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Hitachi-johnson Controls Air Conditioning, Inc.

USPTO PatentsView assignee record - 94 granted patents across 31 technology areas, active 2017–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: F25B (REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS).

Explore the portfolio See the ranking
94
Total patents granted
31
CPC technology areas
8.2
Avg claims per patent
+69%
5-year filing velocity

The verdict

Hitachi-johnson holds 94 US patents across 31 technology areas, rank #3,842 of 50,000 tracked assignees.

#3,842
of 50,000 US assignees by volume
Top 33%
by Innovation Score (41.6/100)
8.2
avg claims per patent
+69%
filing velocity, last 5 yrs

Portfolio overview

Hitachi-johnson Controls Air Conditioning, Inc. has been granted 94 US utility patents between 2017 and 2025, placing Hitachi-johnson Controls Air Conditioning, Inc. at rank #3,842 across all assignees tracked by PlainPatent. This portfolio spans 31 distinct Cooperative Patent Classification (CPC) subclasses, averaging 8.2 claims per patent with primary concentration in F25B (REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS). As a Foreign Corporation, Hitachi-johnson Controls Air Conditioning, Inc. is one of the more focused assignees in the PatentsView dataset. By volume, Hitachi-johnson sits between East China University Of Science And Technology (94 patents, rank #3,838) and Inno-sports Co., Ltd. (94 patents, rank #3,846) - the closest US assignees by grant volume. The composite Innovation Score of 41.6/100 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 59 grants, compared with 35 in the 2015–2019 window, a +69% shift in five-year velocity. An acceleration of this magnitude signals aggressive R&D investment and expanding technical ambition. 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-johnson Controls Air Conditioning, Inc.'s 8.2 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while a multi-domain presence across 31 subclasses balances depth with breadth. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Hitachi-johnson Controls Air Conditioning, Inc. against peers pursuing similar technology classes.

Who files at Hitachi-johnson's volume?

Granted US patents 2015–2025 versus its nearest-ranked assignees by volume, this company marked ◀

patents

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.

Source USPTO PatentsView, granted utility patents As of 2015–2025

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.

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

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

42 Top 33% higher than 67% of 50,000 US assignees

0–10: 687 US assignees (1%). Below this entry. 10–20: 2,527 US assignees (5%). Below this entry. 20–30: 13,162 US assignees (26%). Below this entry. 30–40: 15,294 US assignees (31%). Below this entry. 40–50: 11,491 US assignees (23%). This entry sits in this band. 50–60: 5,058 US assignees (10%). Above this entry. 60–70: 1,537 US assignees (3%). Above this entry. 70–80: 234 US assignees (0%). Above this entry. 80–90: 10 US assignees (0%). Above this entry. 90–100: 0 US assignees (0%). Above this entry. This assignee 0 100 every tracked assignee, bucketed by value

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

-100102030 201720182019202020212022202320242025 1
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%
2025 1 1.1%

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

Top 15 of 31 technology areas

Patent Moat Analysis

Portfolio Volume Light
Tech Breadth Multi-domain
Claim Depth Simple
Velocity Accelerating

Where it ranks

Overall rank by patents

#3,842

Across all 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?

Frequently Asked Questions

How many patents does Hitachi-johnson Controls Air Conditioning, Inc. hold?
Hitachi-johnson Controls Air Conditioning, Inc. holds 94 US granted patents filed 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. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).
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. The company has filed patents in 31 CPC subclasses total.
Is Hitachi-johnson Controls Air Conditioning, Inc.'s patent filing rate increasing or decreasing?
Hitachi-johnson Controls Air Conditioning, Inc.'s recent filing velocity is +69% compared to the prior five-year period. This indicates accelerating innovation.
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 relatively simple claim structure, typical for focused inventions.
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.

How to use this portfolio

Hitachi-johnson's 94 grants land it in the top 33% 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-johnson ranks #3,842 of 50,000. Top 50 holders
  • Most of this portfolio concentrates in F25B - see who else leads that technology area. F25B 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

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.