Where does Qingdao Haigao Design & Manufacturing Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Qingdao Haigao Design & Manufacturing Co., Ltd. ranks #23,251 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 Haigao Design & Manufacturing Co., Ltd. hold?

Qingdao Haigao Design & Manufacturing Co., Ltd. holds 12 US utility patents granted between 2018 and 2024, spanning 19 technology areas.

What is Qingdao Haigao Design & Manufacturing Co., Ltd.'s Innovation Score?

Qingdao Haigao Design & Manufacturing Co., Ltd. has an Innovation Score of 38.5 out of 100 (top 41% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Qingdao Haigao Design & Manufacturing Co., Ltd.'s patent grant rate increasing or decreasing?

Qingdao Haigao Design & Manufacturing Co., Ltd.'s recent grant velocity is +100% 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 Haigao Design & Manufacturing Co., Ltd.'s patents?

Qingdao Haigao Design & Manufacturing Co., Ltd.'s patents average 10.3 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 Haigao Design & Manufacturing Co., Ltd.

Q: What technology areas does Qingdao Haigao Design & Manufacturing Co., Ltd. focus on?

Qingdao Haigao Design & Manufacturing Co., Ltd.'s top technology area is F25D (REFRIGERATORS; Cold ROOMS; ICE-BOXES; Cooling OR Freezing Apparatus NOT Otherwise Provided FOR) with 4 patents, ranking #147 of 588 assignees active in that subclass. Grants appear in 19 CPC subclasses total.

Q: How is the Qingdao Haigao Design & Manufacturing 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 - 12 granted patents across 19 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

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The verdict

According to USPTO PatentsView, Qingdao ranks #23,251 of 49,997 tracked US assignees by granted-patent volume, with 12 patents across 19 technology areas.

#23,251
of 49,997 US assignees by volume: Top 41%
by Innovation Score (38.5/100): 10.3
avg claims per patent: +100%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R23251 · Foreign Corporation #23,251 · 12 grants

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

GRANTS-MICRO 12 grants
MID-PACK #23,251/49,997
PHOTO-FINISH Public Joint Stock…
CPC-FOCUS F25D · 19 areas
INNOV-THIN 38.5/100
CLAIMS-PAR 10.3 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +100% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Public Joint Stock Company “Transneft” (±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 38.5 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 8.9 pts (23%) Velocity 8.0 pts (21%) Breadth 15.4 pts (40%) Claim depth 6.2 pts (16%)

Qualcomm Incorporated · highest

85
Qingdao Haigao… · this assignee

38
3D Lighting… · lowest

7

What this shows Qingdao's Innovation Score is 38.5/100 (top 41% 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 10.3 claims/patent is at or below the 12.1 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 Haigao Design & Manufacturing Co., Ltd. is a focused PatentsView assignee: 19 CPC subclasses with 33.3% of grants classified under F25D (REFRIGERATORS; Cold ROOMS; ICE-BOXES; Cooling OR Freezing Apparatus NOT Otherwise Provided FOR). Peak complete grant year is 2019 (3 grants) versus a trough of 1 in 2018. By volume, Qingdao sits between Public Joint Stock Company “Transneft” and Quantum Surgical.

Qingdao's three-year grant acceleration

Qingdao Haigao Design & Manufacturing Co., Ltd. shows 6 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.

Public Joint Stoc…

12
Pulselight Holdin…

12
Pure Global Brands

12
Qfeeltech (Beijin…

12
Qoniac

12
Qualigen

12
Quanergy Systems

12
Quantum Surgical

12
Qingdao Haigao De… ◀

12

What this shows Qingdao holds 12 patents at rank #23,242, 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 #23,242 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, grant velocity, technology breadth, and claim depth (0–100)

38 Top 41% higher than 59% 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 Haigao Design & Manufacturing Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2018	1	8.3%
2019	3	25.0%
2020	1	8.3%
2021	1	8.3%
2022	3	25.0%
2024	3	25.0%

Which technologies does Qingdao Haigao Design & Manufacturing Co., Ltd. patent most?

F25D - REFRIGERATORS; Cold ROOMS; ICE-BOXES; Cooling OR Freezing Apparatus NOT Otherwise Provided FOR 4

A01G - HORTICULTURE; Cultivation OF Vegetables, Flowers, Rice, Fruit, Vines, Hops OR SEAWEED; FORESTRY; Watering 4

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 4

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

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

A23B - Preservation OF Foods, Foodstuffs OR Non-alcoholic BEVERAGES; Chemical Ripening OF Fruit OR Vegetables 2

H04W - Wireless Communication Networks 1

Y02D - Climate Change Mitigation Technologies IN Information AND Communication Technologies [ICT], I.E. Information AND Communication Technologies Aiming AT THE Reduction OF Their OWN Energy USE 1

G01S - Radio DIRECTION-FINDING; Radio NAVIGATION; Determining Distance OR Velocity BY USE OF Radio WAVES; Locating OR Presence-detecting BY USE OF THE Reflection OR Reradiation OF Radio WAVES; Analogous Arrangements Using Other Waves 1

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

H04B - Transmission 1

B65B - Machines, Apparatus OR Devices FOR, OR Methods OF, Packaging Articles OR MATERIALS; Unpacking 1

B65G - Transport OR Storage Devices, e.g. Conveyors FOR Loading OR Tipping, Shop Conveyor Systems OR Pneumatic Tube Conveyors 1

H02J - Circuit Arrangements OR Systems FOR Supplying OR Distributing Electric POWER; Systems FOR Storing Electric Energy 1

B25J - MANIPULATORS; Chambers Provided With Manipulation Devices 1

Top 15 of 19 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 Haigao Design & Manufacturing Co., Ltd.'s patent record in context - here's where to go next.

Qingdao Haigao Design & Manufacturing Co., Ltd.'s lead technology class is F25D (REFRIGERATORS; Cold ROOMS; ICE-BOXES; Cooling OR Freezing Apparatus NOT Otherwise Provided FOR), 33.3% of its portfolio - see every assignee active in that class. Explore F25D
Ranked #23,251 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Qingdao Haigao Design & Manufacturing Co., Ltd. against Public Joint Stock Company “Transneft”, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 38.5/100 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.