Where does Hangzhou Normal University rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Hangzhou Normal University ranks #11,274 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 Hangzhou Normal University hold?

Hangzhou Normal University holds 27 US utility patents granted between 2015 and 2025, spanning 38 technology areas.

What is Hangzhou Normal University's Innovation Score?

Hangzhou Normal University has an Innovation Score of 52.9 out of 100 (top 9% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Hangzhou Normal University focus on?

Hangzhou Normal University's top technology area is C07C (Acyclic OR Carbocyclic Compounds) with 8 patents, ranking #559 of 2,691 assignees active in that subclass. Grants appear in 38 CPC subclasses total.

Is Hangzhou Normal University's patent grant rate increasing or decreasing?

Hangzhou Normal University's recent grant velocity is +400% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Hangzhou Normal University's patents?

Hangzhou Normal University's patents average 8.2 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 Hangzhou Normal 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

Hangzhou Normal University

USPTO PatentsView assignee record - 27 granted patents across 38 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: C07C (Acyclic OR Carbocyclic Compounds).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Hangzhou ranks #11,274 of 49,997 tracked US assignees by granted-patent volume, with 27 patents across 38 technology areas.

#11,274
of 49,997 US assignees by volume: Top 9%
by Innovation Score (52.9/100): 8.2
avg claims per patent: +400%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R11274 · Foreign Corporation #11,274 · 27 grants

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

GRANTS-SMALL 27 grants
UPPER-Q #11,274/49,997
PHOTO-FINISH Hadal
CPC-FOCUS C07C · 38 areas
INNOV-PAR 52.9/100
CLAIMS-PAR 8.2 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +400% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Hadal, Inc. (±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 Hangzhou’s 52.9 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 11.5 pts (22%) Velocity 14.7 pts (28%) Breadth 21.8 pts (41%) Claim depth 4.9 pts (9%)

Qualcomm Incorporated · highest

85
Enduvo · near

53
Avalon Holographics · near

53
Beijing University… · near

53
Genesys Cloud Services · near

53
Hangzhou Normal… · this assignee

53
3D Lighting… · lowest

7

What this shows Hangzhou's Innovation Score is 52.9/100 (top 9% 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 Hangzhou?

Each dot is one of Hangzhou’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). Hangzhou’s own 8.2 claims/patent is at or below the 15.0 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Hangzhou's grants concentrate

Hangzhou Normal University is a focused PatentsView assignee: 38 CPC subclasses with 29.6% of grants classified under C07C (Acyclic OR Carbocyclic Compounds). Peak complete grant year is 2024 (5 grants) versus a trough of 1 in 2015. By volume, Hangzhou sits between Halio, Inc. and I.R.C.A. S.P.A. Industria Resistenze Corazzate E Affini.

Hangzhou's three-year grant acceleration

Hangzhou Normal University shows 11 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.

Halio

27
Helmholtz-zentrum…

27
Hydac Process Tec…

27
Hadal

27
Helmholtz-zentrum…

27
Honor Metro

27
Hound Labs

27
I R C A S P A Ind…

27
Hangzhou Normal U… ◀

27

What this shows Hangzhou holds 27 patents at rank #11,274, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Hangzhou

By rank, the assignees closest to #11,274 in granted patent volume.

Leaders in C07C (Acyclic OR Carbocyclic Compounds)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Hangzhou, neither rank-band nor same-CPC leaders (those blocks stay above). In C07C (Acyclic OR Carbocyclic Compounds), Hangzhou ranks #559 of 2,691 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (53 here).

Avalon Holographics Inc. 53 Genesys Cloud Services, Inc. 53 Beijing University of Chemical Technology 53 Enduvo, Inc. 53

Hangzhou's Innovation Score vs. every tracked assignee

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

53 Top 9% higher than 91% 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

Hangzhou Normal University patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	1	3.7%
2018	1	3.7%
2019	1	3.7%
2020	2	7.4%
2021	2	7.4%
2022	2	7.4%
2023	4	14.8%
2024	5	18.5%
2025partial year	9	33.3%

Which technologies does Hangzhou Normal University patent most?

C07C - Acyclic OR Carbocyclic Compounds 8

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 7

C07D - Heterocyclic Compounds 5

C02F - Treatment OF Water, Waste Water, Sewage, OR Sludge 4

C12N - Microorganisms OR ENZYMES; Compositions THEREOF; Propagating, Preserving, OR Maintaining MICROORGANISMS; Mutation OR Genetic ENGINEERING; Culture Media 4

Y02W - Climate Change Mitigation Technologies Related TO Wastewater Treatment OR Waste Management 3

H04L - Transmission OF Digital Information, e.g. Telegraphic Communication 3

C09K - Materials FOR Miscellaneous Applications, NOT Provided FOR Elsewhere 3

C12R - Indexing Scheme Associated With Subclasses C12c - C12q, Relating TO Microorganisms 2

A61K - Preparations FOR Medical, Dental OR Toiletry Purposes 2

C07F - Acyclic, Carbocyclic OR Heterocyclic Compounds Containing Elements Other Than Carbon, Hydrogen, Halogen, Oxygen, Nitrogen, Sulfur, Selenium OR Tellurium 2

C12Y - Enzymes 2

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 2

C08G - Macromolecular Compounds Obtained Otherwise Than BY Reactions Only Involving Unsaturated Carbon-to-carbon Bonds 1

C09J - ADHESIVES; Non-mechanical Aspects OF Adhesive Processes IN GENERAL; Adhesive Processes NOT Provided FOR ELSEWHERE; USE OF Materials AS Adhesives 1

Top 15 of 38 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

Hangzhou Normal University's patent record in context - here's where to go next.

Hangzhou Normal University's lead technology class is C07C (Acyclic OR Carbocyclic Compounds), 29.6% of its portfolio - see every assignee active in that class. Explore C07C
Ranked #11,274 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Hangzhou Normal University against Halio, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 52.9/100 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.