USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Qingdao Haier Joint Stock Co., Ltd.

USPTO PatentsView assignee record - 84 granted patents across 31 technology areas, active 2018–2024. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: F25D (REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR).

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · May 15, 2026

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

11.4

Avg claims per patent

+564%

5-year filing velocity

The verdict

Qingdao holds 84 US patents across 31 technology areas, rank #4,256 of 50,000 tracked assignees.

#4,256
of 50,000 US assignees by volume: Top 27%
by Innovation Score (43.9/100): 11.4
avg claims per patent: +564%
filing velocity, last 5 yrs

Portfolio overview

Qingdao Haier Joint Stock Co., Ltd. has been granted 84 US utility patents between 2018 and 2024, placing Qingdao Haier Joint Stock Co., Ltd. at rank #4,256 across all assignees tracked by PlainPatent. This portfolio spans 31 distinct Cooperative Patent Classification (CPC) subclasses, averaging 11.4 claims per patent with primary concentration in F25D (REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR). As a Foreign Corporation, Qingdao Haier Joint Stock Co., Ltd. is one of the more focused assignees in the PatentsView dataset. By volume, Qingdao sits between Nisca Corporation (84 patents, rank #4,252) and Riddell, Inc. (84 patents, rank #4,260) - the closest US assignees by grant volume. The composite Innovation Score of 43.9/100 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 73 grants, compared with 11 in the 2015–2019 window, a +564% 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. Qingdao Haier Joint Stock Co., Ltd.'s 11.4 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 Qingdao Haier Joint Stock Co., Ltd. against peers pursuing similar technology classes.

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.

Qingdao's Innovation Score vs. every tracked assignee

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

44 Top 27% higher than 73% of 50,000 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

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Multi-domain

Claim Depth Simple

Velocity Accelerating

Where it ranks

Overall rank by patents

#4,256

Across all tracked assignees

Innovation Score

43.9 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 Qingdao Haier Joint Stock Co., Ltd. hold?

Qingdao Haier Joint Stock Co., Ltd. holds 84 US granted patents filed 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. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

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. The company has filed patents in 31 CPC subclasses total.

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

Qingdao Haier Joint Stock Co., Ltd.'s recent filing velocity is +564% compared to the prior five-year period. This indicates accelerating innovation.

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 relatively simple claim structure, typical for focused inventions.

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.

How to use this portfolio

Qingdao's 84 grants land it in the top 27% 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 - Qingdao ranks #4,256 of 50,000. Top 50 holders
Most of this portfolio concentrates in F25D - see who else leads that technology area. F25D 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

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · 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.