Where does Qingdao Haier Joint Stock Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Qingdao Haier Joint Stock Co., Ltd. ranks #4,256 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 Qingdao Haier Joint Stock Co., Ltd. hold?

Qingdao Haier Joint Stock Co., Ltd. holds 84 US utility patents granted between 2018 and 2024, spanning 31 technology areas.

What is Qingdao Haier Joint Stock Co., Ltd.'s Innovation Score?

Qingdao Haier Joint Stock Co., Ltd. has an Innovation Score of 43.9 out of 100 (top 27% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Qingdao Haier Joint Stock Co., Ltd.'s patent grant rate increasing or decreasing?

Qingdao Haier Joint Stock Co., Ltd.'s recent grant velocity is +564% 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 Haier Joint Stock Co., Ltd.'s patents?

Qingdao Haier Joint Stock Co., Ltd.'s patents average 11.4 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.

How is the Qingdao Haier Joint Stock 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 2015–2025 USPTO PatentsView Foreign Corporation

Qingdao Haier Joint Stock Co., Ltd.

Q: What technology areas does Qingdao Haier Joint Stock Co., Ltd. focus on?

Qingdao Haier Joint Stock Co., Ltd.'s top technology area is F25D (REFRIGERATORS; Cold ROOMS; ICE-BOXES; Cooling OR Freezing Apparatus NOT Otherwise Provided FOR) with 81 patents, ranking #10 of 588 assignees active in that subclass. Grants appear in 31 CPC subclasses total.

USPTO PatentsView assignee record - 84 granted patents across 31 technology areas, recorded in grant years 2018–2024. 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: F25D (REFRIGERATORS; Cold ROOMS; ICE-BOXES; Cooling OR Freezing Apparatus NOT Otherwise Provided FOR).

Compiled by PlainPatent · May 15, 2026

RSS updates for this company

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Qingdao ranks #4,256 of 49,997 tracked US assignees by granted-patent volume, with 84 patents across 31 technology areas.

#4,256
of 49,997 US assignees by volume: Top 27%
by Innovation Score (43.9/100): 11.4
avg claims per patent: +564%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R4256 · Foreign Corporation #4,256 · 84 grants

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

GRANTS-SMALL 84 grants
TOP-DECILE #4,256/49,997
PHOTO-FINISH Nisca
CPC-FOCUS F25D · 31 areas
INNOV-PAR 43.9/100
CLAIMS-PAR 11.4 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +564% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Nisca Corporation (±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 43.9 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 15.3 pts (35%) Velocity 2.0 pts (5%) Breadth 19.7 pts (45%) Claim depth 6.8 pts (16%)

Qualcomm Incorporated · highest

85
Coulter Ventures · near

44
PME IP PTY · near

44
Qingdao Haier Joint… · this assignee

44
Rehabilitation… · near

44
Sorrento Therapeutics · near

44
3D Lighting… · lowest

7

What this shows Qingdao's Innovation Score is 43.9/100 (top 27% 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 11.4 claims/patent is at or below the 18.1 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Qingdao's grants concentrate

Qingdao Haier Joint Stock Co., Ltd. is a focused PatentsView assignee: 31 CPC subclasses with 96.4% of grants classified under F25D (REFRIGERATORS; Cold ROOMS; ICE-BOXES; Cooling OR Freezing Apparatus NOT Otherwise Provided FOR). Peak complete grant year is 2021 (29 grants) versus a trough of 2 in 2018. By volume, Qingdao sits between Nisca Corporation and Riddell, Inc..

Qingdao's three-year grant acceleration

From 2019–2021 to 2022–2024, Qingdao Haier Joint Stock Co., Ltd. moved from 63 to 19 grants (0.30x the prior three-year total, a multiple, not a CAGR). See the growth leaderboard.

Nisca

84
Optis Cellular Te…

84
Orthosensor

84
Prince Castle

84
Qualcomm Mems

84
Quanata

84
Refinitiv US Orga…

84
Riddell

84
Qingdao Haier Joi… ◀

84

What this shows Qingdao holds 84 patents at rank #4,256, 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 #4,256 in granted patent volume.

Leaders in F25D (Refrigerators)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Qingdao, neither rank-band nor same-CPC leaders (those blocks stay above). In F25D (Refrigerators), Qingdao ranks #10 of 588 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (44 here).

PME IP PTY Ltd 44 Sorrento Therapeutics, Inc. 44 Rehabilitation Institute of Chicago 44 Coulter Ventures, LLC. 44

Similar claim depth

Nearest assignees by average claims per patent (11.4 here).

Daewoong Pharmaceutical Co., Ltd. 11.4 avg Olympus Medical Systems Corporation 11.4 avg Korea Institute OF Machinery & Materials 11.4 avg Pegatron Corporation 11.4 avg

Qingdao's Innovation Score vs. every tracked assignee

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

44 Top 27% higher than 73% 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 · 2018–2024

Grants by year

Teal-shaded recent years (2020–present) versus the 2018–2019 baseline. Full figures in the table below.

View data table

Qingdao Haier Joint Stock Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2018	2	2.4%
2019	9	10.7%
2020	25	29.8%
2021	29	34.5%
2022	12	14.3%
2023	5	6.0%
2024	2	2.4%

Which technologies does Qingdao Haier Joint Stock Co., Ltd. patent most?

F25D - REFRIGERATORS; Cold ROOMS; ICE-BOXES; Cooling OR Freezing Apparatus NOT Otherwise Provided FOR 81

E05Y - Indexing Scheme Associated With Subclasses E05d AND E05f, Relating TO Construction Elements, Electric Control, Power Supply, Power Signal OR Transmission, User Interfaces, Mounting OR Coupling, Details, Accessories, Auxiliary Operations NOT Otherwise Provided FOR, Application Thereof 22

E05D - Hinges OR Suspension Devices FOR Doors, Windows OR Wings 22

F25B - Refrigeration Machines, Plants OR SYSTEMS; Combined Heating AND Refrigeration SYSTEMS; Heat Pump Systems 17

E05F - Devices FOR Moving Wings Into Open OR Closed POSITION; Checks FOR WINGS; Wing Fittings NOT Otherwise Provided FOR, Concerned With THE Functioning OF THE Wing 17

B01D - Separation 12

C01B - Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c 10

A23B - Preservation OF Foods, Foodstuffs OR Non-alcoholic BEVERAGES; Chemical Ripening OF Fruit OR Vegetables 9

A23V - Indexing Scheme Relating TO Foods, Foodstuffs OR Non-alcoholic Beverages AND Lactic OR Propionic Acid Bacteria Used IN Foodstuffs OR Food Preparation 5

F28D - Heat-exchange Apparatus, NOT Provided FOR IN Another Subclass, IN Which THE Heat-exchange Media DO NOT Come Into Direct Contact 4

F04B - Positive-displacement Machines FOR LIQUIDS; Pumps 3

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

A47J - Kitchen EQUIPMENT; Coffee MILLS; Spice MILLS; Apparatus FOR Making Beverages 3

B65D - Containers FOR Storage OR Transport OF Articles OR Materials, e.g. Bags, Barrels, Bottles, Boxes, Cans, Cartons, Crates, Drums, Jars, Tanks, Hoppers, Forwarding CONTAINERS; Accessories, Closures, OR Fittings THEREFOR; Packaging ELEMENTS; Packages 3

A47B - TABLES; DESKS; Office FURNITURE; CABINETS; DRAWERS; General Details OF Furniture 2

Top 15 of 31 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 Haier Joint Stock Co., Ltd.'s patent record in context - here's where to go next.

Qingdao Haier Joint Stock Co., Ltd.'s lead technology class is F25D (REFRIGERATORS; Cold ROOMS; ICE-BOXES; Cooling OR Freezing Apparatus NOT Otherwise Provided FOR), 96.4% of its portfolio - see every assignee active in that class. Explore F25D
Ranked #4,256 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Qingdao Haier Joint Stock Co., Ltd. against Nisca Corporation, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 43.9/100 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.