Where does Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd. ranks #18,027 of 49,997 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.

Is Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd.'s patent grant rate increasing or decreasing?

Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd.'s recent grant velocity is +80% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd.'s patents?

Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd.'s patents average 15.4 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

Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd.

Q: How many patents does Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd. hold?

Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd. holds 16 US utility patents granted between 2017 and 2025, spanning 14 technology areas.

Q: What is Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd.'s Innovation Score?

Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd. 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%).

Q: How is the Qingdao Hisense Hitachi Air-conditioning 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 - 16 granted patents across 14 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, Qingdao ranks #18,027 of 49,997 tracked US assignees by granted-patent volume, with 16 patents across 14 technology areas.

#18,027
of 49,997 US assignees by volume: Top 33%
by Innovation Score (41.6/100): 15.4
avg claims per patent: +80%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R18027 · Foreign Corporation #18,027 · 16 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-RICH · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-MICRO 16 grants
MID-PACK #18,027/49,997
PHOTO-FINISH Proton Power
CPC-FOCUS F25B · 14 areas
INNOV-PAR 41.6/100
CLAIMS-RICH 15.4 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +80% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Proton Power, Inc. (±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 Qingdao’s 41.6 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 9.8 pts (24%) Velocity 9.3 pts (22%) Breadth 13.2 pts (32%) Claim depth 9.3 pts (22%)

Qualcomm Incorporated · highest

85
Qingdao Hisense… · this assignee

42
3D Lighting… · lowest

7

What this shows Qingdao'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.

Does more volume mean deeper claims for Qingdao?

Each dot is one of Qingdao’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). Qingdao’s own 15.4 claims/patent is ABOVE the 15.2 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

Qingdao vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where Qingdao's grants concentrate

Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd. is a focused PatentsView assignee: 14 CPC subclasses with 75% of grants classified under F25B (Refrigeration Machines, Plants OR SYSTEMS; Combined Heating AND Refrigeration SYSTEMS; Heat Pump Systems). Peak complete grant year is 2024 (4 grants) versus a trough of 1 in 2017. By volume, Qingdao sits between Proton Power, Inc. and Qorvo Biotechnologies, LLC.

Qingdao's three-year grant acceleration

Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd. shows 7 grants in 2022–2024 against only 5 in 2019–2021. That prior window is too thin for a growth multiple (rename and spin-out assignees look artificially high when the baseline is near zero), so PlainPatent withholds a ranked acceleration claim here.

Proton Power

16
Pura Scents

16
Qcify

16
Qiaokang Biotech…

16
Qualicaps

16
Quest Engines

16
Qinterra AS

16
Qorvo Biotechnolo…

16
Qingdao Hisense H… ◀

16

What this shows Qingdao holds 16 patents at rank #18,023, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Qingdao

By rank, the assignees closest to #18,023 in granted patent volume.

Leaders in F25B (Refrigeration Machines)

Other assignees with the most granted patents in Qingdao's primary technology class.

Qingdao'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

Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2017	1	6.3%
2018	1	6.3%
2019	3	18.8%
2020	1	6.3%
2021	1	6.3%
2022	2	12.5%
2023	1	6.3%
2024	4	25.0%
2025partial year	2	12.5%

Which technologies does Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd. patent most?

F25B - Refrigeration Machines, Plants OR SYSTEMS; Combined Heating AND Refrigeration SYSTEMS; Heat Pump Systems 12

F24F - AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR Currents FOR Screening 9

Y02B - Climate Change Mitigation Technologies Related TO Buildings, e.g. Housing, House Appliances OR Related End-user Applications 5

F28F - Details OF Heat-exchange AND Heat-transfer Apparatus, OF General Application 3

F24H - Fluid Heaters, e.g. Water OR AIR Heaters, Having Heat-generating Means, e.g. Heat Pumps, IN General 2

F28D - Heat-exchange Apparatus, NOT Provided FOR IN Another Subclass, IN Which THE Heat-exchange Media DO NOT Come Into Direct Contact 2

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

G05D - Systems FOR Controlling OR Regulating Non-electric Variables 2

F24D - Domestic- OR Space-heating Systems, e.g. Central Heating SYSTEMS; Domestic Hot-water Supply SYSTEMS; Elements OR Components Therefor 1

F04B - Positive-displacement Machines FOR LIQUIDS; Pumps 1

G06F - Electric Digital Data Processing 1

H04L - Transmission OF Digital Information, e.g. Telegraphic Communication 1

B60H - Arrangements OF Heating, Cooling, Ventilating OR Other Air-treating Devices Specially Adapted FOR Passenger OR Goods Spaces OF Vehicles 1

F16K - VALVES; TAPS; COCKS; ACTUATING-FLOATS; Devices FOR Venting OR Aerating 1

Top 14 of 14 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

Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd.'s patent record in context - here's where to go next.

Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd.'s lead technology class is F25B (Refrigeration Machines, Plants OR SYSTEMS; Combined Heating AND Refrigeration SYSTEMS; Heat Pump Systems), 75% of its portfolio - see every assignee active in that class. Explore F25B
Ranked #18,027 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Qingdao Hisense Hitachi Air-conditioning Systems Co., Ltd. against Proton Power, Inc., 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.