PatentsDB

Hitachi Johnson Controls Air Conditioning Inc patents

Hitachi Johnson Controls Air Conditioning Inc holds 166 patents in our database, with recent filings and technology areas summarized below.

Company patent statistics
MetricValue
Total patents166
Recent patents9
First publicationFeb 13, 2018
Latest publicationFeb 3, 2026

Filing trend

Year-over-year patent counts for this assignee.

Filing activity over the last five years is rapidly declining.

Patents filed per year
YearPatents
201826
201952
202040
202124
202210
20235
20244
20254
20261
Browse patents by year
YearPatents
201826
201952
202040
202124
202210
20235
20244
20254
20261

Recent patents

Latest publications where this party is an assignee.

Notable patents

Representative or frequently cited publications from precomputed assignee stats.

Technology areas

Mapped technology topics for this assignee.

Company technology slices
TechnologyPatents
Mechanical Engineering149
Cross-Sectional Technologies32
Electricity26
Physics11
Chemistry & Metallurgy8
Operations & Transport4

Frequently asked questions

Answers are generated from the same data shown on this page.

How many patents does Hitachi Johnson Controls Air Conditioning Inc have in patentsdb?
Hitachi Johnson Controls Air Conditioning Inc is linked to 166 publications as assignee in our database.
What technology areas does Hitachi Johnson Controls Air Conditioning Inc patent most?
Top mapped technology areas by patent count: Mechanical Engineering (149); Cross-Sectional Technologies (32); Electricity (26).
Is Hitachi Johnson Controls Air Conditioning Inc's patent activity growing?
In our data, assignee counts were 4 in 2024 and 4 in 2025 (similar year over year).
What are recent patents assigned to Hitachi Johnson Controls Air Conditioning Inc?
See the “Recent patents” section above for the latest 5 publications we attribute to this assignee.