Where does Qingdao University rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Qingdao University ranks #10,149 of 50,000 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 University hold?

Qingdao University holds 31 US utility patents granted between 2019 and 2025, spanning 42 technology areas.

What is Qingdao University's Innovation Score?

Qingdao University has an Innovation Score of 39.5 out of 100 (top 38% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Qingdao University's patent grant rate increasing or decreasing?

Qingdao University's recent grant velocity is +2400% 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 University's patents?

Qingdao University's patents average 5.6 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 University 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 University

Q: What technology areas does Qingdao University focus on?

Qingdao University's top technology area is G01N (INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES) with 12 patents. Grants appear in 42 CPC subclasses total.

USPTO PatentsView assignee record - 31 granted patents across 42 technology areas, recorded in grant years 2019–2025. 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: G01N (INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES).

Compiled by PlainPatent · May 15, 2026

Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Qingdao ranks #10,149 of 50,000 tracked US assignees by granted-patent volume, with 31 patents across 42 technology areas.

#10,149
of 50,000 US assignees by volume: Top 38%
by Innovation Score (39.5/100): 5.6
avg claims per patent: +2400%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R10149 · Foreign Corporation #10,149 · 31 grants

GRANTS-SMALL · UPPER-Q · PHOTO-FINISH · CPC-WIDE · INNOV-THIN · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-SMALL 31 grants
UPPER-Q #10,149/50,000
PHOTO-FINISH Project Phoenix
CPC-WIDE G01N · 42 areas
INNOV-THIN 39.5/100
CLAIMS-SPARSE 5.6 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +2400% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Project Phoenix, 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.

Qualcomm Incorporated · highest

85
Overstock com · near

39
Crossroads Extremity… · near

39
E f Johnson · near

39
Prilit Optronics · near

39
Qingdao University · this assignee

39
3D Lighting Innovati… · lowest

7

What this shows Qingdao University stamps GRANTS-SMALL, UPPER-Q, PHOTO-FINISH, CPC-WIDE, INNOV-THIN, CLAIMS-SPARSE, TYPE-FRNCORP, VEL-SURGE, BOOK-FULL. Volume places it #10,149 of 50,000; Innovation Score 39.5/100 sits in the top 38% of the PatentsView-derived corpus. Closest grant-volume peer on this plate is Project Phoenix, Llc (±0 grants).

Portfolio overview

Qingdao University has been granted 31 US utility patents between 2019 and 2025, placing Qingdao University at #10,149 of 50,000 across all assignees tracked by PlainPatent. This portfolio spans 42 distinct Cooperative Patent Classification (CPC) subclasses, averaging 5.6 claims per patent with primary concentration in G01N (INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES). As a Foreign Corporation, Qingdao University is one of the more focused assignees in the PatentsView dataset. By volume, Qingdao sits between Project Phoenix, Llc (31 patents, rank #10,145) and Resvent Medical Technology Co., Ltd (31 patents, rank #10,153) - the closest US assignees by grant volume. The composite Innovation Score of 39.5/100 blends portfolio volume, grant velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Grant cadence records the difference between two grant-year windows. Between 2020 and 2024 the company received 25 grants, compared with 1 in the 2015–2019 window, a +2400% shift in five-year grant velocity. Both windows cover five complete grant years; the latest PatentsView year is a partial release and is excluded from this comparison, though it still appears in the yearly table and chart below. Grant timing can lag the related application by years, so this comparison does not establish current R&D spending, strategic intent, or a company’s application activity. The Foreign Corporation classification provides context for the assignee record, not a conclusion about its business strategy.

Claim depth and technology breadth describe this aggregate record. Qingdao University's 5.6 average claims per patent is an average count, not a measure of claim scope, legal strength, enforceability, or design-around risk. The record spans 42 CPC subclasses. Combined with portfolio volume, these figures let readers compare the documented grant records of assignees in similar technology classes.

Project Phoenix

31
Proteinsimple

31
Puff

31
Qingdao Hisense

31
Quantum Metric

31
Reeves Wireline

31
RELX

31
Resvent Medical T…

31
Qingdao University ◀

31

What this shows Qingdao holds 31 patents at rank #10,149, 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 #10,149 in granted patent volume.

Leaders in G01N (Investigating OR Analysing Materials BY Determining Their…)

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).

Similar innovation score

Nearest assignees by Innovation Score (39 here).

E.f. Johnson Company 39 Prilit Optronics, Inc. 39 Crossroads Extremity Systems, Llc 39 Overstock.com, Inc. 39

Qingdao's Innovation Score vs. every tracked assignee

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

39 Top 38% higher than 62% 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 · 2019–2025

Grants by year

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

View data table

Qingdao University patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2019	1	3.2%
2020	5	16.1%
2021	16	51.6%
2022	1	3.2%
2024	3	9.7%
2025partial year	5	16.1%

Which technologies does Qingdao University patent most?

G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 12

Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION 8

B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES 8

C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE 8

H02M - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF 6

H02J - CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY 6

D01F - CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS 5

D10B - INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES 4

D01D - MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS 4

C12N - MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA 4

C12Q - MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS ; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES 3

B05D - PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL 2

D06M - TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS 2

C08B - POLYSACCHARIDES; DERIVATIVES THEREOF 2

A61K - PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES 2

Top 15 of 42 technology areas

Where it ranks

Overall rank by patents

#10,149

of 50,000 tracked assignees

Innovation Score

39.5 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

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.