Where does Qingdao Haier Drum Washing Machine Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Qingdao Haier Drum Washing Machine Co., Ltd. ranks #4,787 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 Drum Washing Machine Co., Ltd. hold?

Qingdao Haier Drum Washing Machine Co., Ltd. holds 73 US utility patents granted between 2015 and 2025, spanning 23 technology areas.

What is Qingdao Haier Drum Washing Machine Co., Ltd.'s Innovation Score?

Qingdao Haier Drum Washing Machine Co., Ltd. has an Innovation Score of 44.9 out of 100 (top 24% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Qingdao Haier Drum Washing Machine Co., Ltd. focus on?

Qingdao Haier Drum Washing Machine Co., Ltd.'s top technology area is D06F (Laundering, Drying, Ironing, Pressing OR Folding Textile Articles) with 70 patents, ranking #9 of 220 assignees active in that subclass. Grants appear in 23 CPC subclasses total.

Is Qingdao Haier Drum Washing Machine Co., Ltd.'s patent grant rate increasing or decreasing?

Qingdao Haier Drum Washing Machine Co., Ltd.'s recent grant velocity is +663% 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 Drum Washing Machine Co., Ltd.'s patents?

Qingdao Haier Drum Washing Machine Co., Ltd.'s patents average 11.0 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 Drum Washing Machine 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 Drum Washing Machine Co., Ltd.

USPTO PatentsView assignee record - 73 granted patents across 23 technology areas, recorded in grant years 2015–2025. 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: D06F (Laundering, Drying, Ironing, Pressing OR Folding Textile Articles).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Qingdao ranks #4,787 of 49,997 tracked US assignees by granted-patent volume, with 73 patents across 23 technology areas.

#4,787
of 49,997 US assignees by volume: Top 24%
by Innovation Score (44.9/100): 11.0
avg claims per patent: +663%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R4787 · Foreign Corporation #4,787 · 73 grants

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

GRANTS-SMALL 73 grants
TOP-DECILE #4,787/49,997
PHOTO-FINISH Performance…
CPC-FOCUS D06F · 23 areas
INNOV-PAR 44.9/100
CLAIMS-PAR 11.0 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +663% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Performance Designed Products LLC (±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 44.9 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 14.9 pts (33%) Velocity 6.5 pts (14%) Breadth 17.0 pts (38%) Claim depth 6.6 pts (15%)

Qualcomm Incorporated · highest

85
Guangzhou Issyzone… · near

45
Kaeser Kompressoren SE · near

45
Qingdao Haier Drum… · this assignee

45
Zipwall · near

45
Festo & KG · near

45
3D Lighting… · lowest

7

What this shows Qingdao's Innovation Score is 44.9/100 (top 24% 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 11.0 claims/patent is at or below the 17.8 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 Drum Washing Machine Co., Ltd. is a focused PatentsView assignee: 23 CPC subclasses with 95.9% of grants classified under D06F (Laundering, Drying, Ironing, Pressing OR Folding Textile Articles). Peak complete grant year is 2020 (19 grants) versus a trough of 1 in 2015. By volume, Qingdao sits between Purdue Pharmaceuticals L.P. and Somfy SAS.

Qingdao's three-year grant acceleration

From 2019–2021 to 2022–2024, Qingdao Haier Drum Washing Machine Co., Ltd. moved from 33 to 32 grants (0.97x the prior three-year total, a multiple, not a CAGR). See the growth leaderboard.

Purdue Pharmaceut…

73
Performance Desig…

73
Pride Mobility Pr…

73
Prognosys Bioscie…

73
Rackspace US

73
Rheinisch-westfäl…

73
Sigma Computing

73
Somfy SAS

73
Qingdao Haier Dru… ◀

73

What this shows Qingdao holds 73 patents at rank #4,787, 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 #4,787 in granted patent volume.

Leaders in D06F (Laundering)

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 D06F (Laundering), Qingdao ranks #9 of 220 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (45 here).

Guangzhou Issyzone Technology Co., Limited 45 Kaeser Kompressoren SE 45 Zipwall, LLC 45 Festo AG & Co. KG 45

Similar claim depth

Nearest assignees by average claims per patent (11.0 here).

Sotera Wireless, Inc. 11.0 avg Nicoventures Holdings Limited 11.0 avg Randox Laboratories Ltd. 11.0 avg Albea Services 11.0 avg

Qingdao's Innovation Score vs. every tracked assignee

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

45 Top 24% higher than 76% 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 · 2015–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.

View data table

Qingdao Haier Drum Washing Machine Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	1.4%
2017	1	1.4%
2018	2	2.7%
2019	4	5.5%
2020	19	26.0%
2021	10	13.7%
2022	18	24.7%
2023	6	8.2%
2024	8	11.0%
2025partial year	4	5.5%

Which technologies does Qingdao Haier Drum Washing Machine Co., Ltd. patent most?

D06F - Laundering, Drying, Ironing, Pressing OR Folding Textile Articles 70

H04M - Telephonic Communication 5

F04D - Non-positive-displacement Pumps 3

Y02B - Climate Change Mitigation Technologies Related TO Buildings, e.g. Housing, House Appliances OR Related End-user Applications 3

E05D - Hinges OR Suspension Devices FOR Doors, Windows OR Wings 3

A47L - Domestic Washing OR Cleaning ; Suction Cleaners IN General 3

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 2

H04L - Transmission OF Digital Information, e.g. Telegraphic Communication 2

F16M - Frames, Casings OR Beds OF Engines, Machines OR Apparatus, NOT Specific TO Engines, Machines OR Apparatus Provided FOR ELSEWHERE; STANDS; Supports 1

A47B - TABLES; DESKS; Office FURNITURE; CABINETS; DRAWERS; General Details OF Furniture 1

F16H - Gearing 1

G07F - Coin-freed OR Like Apparatus 1

G07D - Handling OF Coins OR Valuable Papers, e.g. Testing, Sorting BY Denominations, Counting, Dispensing, Changing OR Depositing 1

F28D - Heat-exchange Apparatus, NOT Provided FOR IN Another Subclass, IN Which THE Heat-exchange Media DO NOT Come Into Direct Contact 1

F28F - Details OF Heat-exchange AND Heat-transfer Apparatus, OF General Application 1

Top 15 of 23 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 Drum Washing Machine Co., Ltd.'s patent record in context - here's where to go next.

Qingdao Haier Drum Washing Machine Co., Ltd.'s lead technology class is D06F (Laundering, Drying, Ironing, Pressing OR Folding Textile Articles), 95.9% of its portfolio - see every assignee active in that class. Explore D06F
Ranked #4,787 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Qingdao Haier Drum Washing Machine Co., Ltd. against Purdue Pharmaceuticals L.P., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 44.9/100 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.