Where does Hohai University rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Hohai University ranks #5,078 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 Hohai University hold?

Hohai University holds 68 US utility patents granted between 2017 and 2025, spanning 67 technology areas.

What is Hohai University's Innovation Score?

Hohai University has an Innovation Score of 47.6 out of 100 (top 18% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Hohai University focus on?

Hohai University's top technology area is G01N (Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties) with 21 patents, ranking #729 of 7,863 assignees active in that subclass. Grants appear in 67 CPC subclasses total.

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

Hohai University's recent grant velocity is +21% compared to the prior five-year period (grant years, not application filing dates). The company is maintaining or growing its granted-patent output.

What does claim depth mean for Hohai University's patents?

Hohai University's patents average 8.0 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 Hohai 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

Hohai University

USPTO PatentsView assignee record - 68 granted patents across 67 technology areas, recorded in grant years 2017–2025. 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

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The verdict

According to USPTO PatentsView, Hohai ranks #5,078 of 49,997 tracked US assignees by granted-patent volume, with 68 patents across 67 technology areas.

#5,078
of 49,997 US assignees by volume: Top 18%
by Innovation Score (47.6/100): 8.0
avg claims per patent: +21%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R5078 · Foreign Corporation #5,078 · 68 grants

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

GRANTS-SMALL 68 grants
UPPER-Q #5,078/49,997
PHOTO-FINISH F Hoffmann-La Roche
CPC-WIDE G01N · 67 areas
INNOV-PAR 47.6/100
CLAIMS-SPARSE 8.0 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-UP +21% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: F. Hoffmann-La Roche AG (±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
Humax · near

48
Hohai University · this assignee

48
Pacific Light &… · near

48
Sophos · near

48
Toshiba Carrier · near

48
3D Lighting… · lowest

7

What this shows Hohai's Innovation Score is 47.6/100 (top 18% 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.

How Hohai's grant cadence moved

Between 2020–2024, Hohai University received 34 grants versus 28 in 2015–2019 (+21% equal-window velocity, above median growth). Across complete PatentsView years, output peaked in 2019 at 12 grants and bottomed in 2022 at 2. Lead class G01N accounts for 30.9% of the portfolio across 67 subclasses. Volume neighbours: F. Hoffmann-La Roche AG (#5,071) and Indian Institute OF Science (#5,079).

Hohai's three-year grant acceleration

From 2019–2021 to 2022–2024, Hohai University moved from 31 to 15 grants (0.48x the prior three-year total, a multiple, not a CAGR). See the growth leaderboard.

F Hoffmann-la Roc…

68
Fluence Bioengine…

68
First Quality Tis…

68
Flagship Pioneeri…

68
Hill's Pet Nutrit…

68
Himax Imaging

68
Idex Health & Sci…

68
Indian Institute…

68
Hohai University ◀

68

What this shows Hohai holds 68 patents at rank #5,075, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Hohai

By rank, the assignees closest to #5,075 in granted patent volume.

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

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Hohai, neither rank-band nor same-CPC leaders (those blocks stay above). In G01N (Investigating OR Analysing Materials BY Determining Their…), Hohai ranks #729 of 7,863 assignees by patent count in that subclass.

Similar innovation score

Nearest assignees by Innovation Score (48 here).

Toshiba Carrier Corporation 48 Pacific Light & Hologram, Inc. 48 Sophos Limited 48 Humax Co., Ltd. 48

Similar claim depth

Nearest assignees by average claims per patent (8.0 here).

University of Science and Technology Beijing 8.0 avg Janome Sewing Machine Co., Ltd. 8.0 avg Nanjing University of Aeronautics and Astronautics 8.0 avg Tatsuta Electric Wire & Cable Co., Ltd. 8.0 avg

Hohai's Innovation Score vs. every tracked assignee

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

48 Top 18% higher than 82% 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 · 2017–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2017–2019 baseline. Full figures in the table below.

View data table

Hohai University patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2017	5	7.4%
2018	11	16.2%
2019	12	17.6%
2020	11	16.2%
2021	8	11.8%
2022	2	2.9%
2023	11	16.2%
2024	2	2.9%
2025partial year	6	8.8%

Which technologies does Hohai University patent most?

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 21

G01M - Testing Static OR Dynamic Balance OF Machines OR STRUCTURES; Testing OF Structures OR Apparatus, NOT Otherwise Provided FOR 8

C02F - Treatment OF Water, Waste Water, Sewage, OR Sludge 6

E02D - FOUNDATIONS; EXCAVATIONS; Embankments ; Underground OR Underwater Structures 6

Y02A - Technologies FOR Adaptation TO Climate Change 6

C04B - Lime, MAGNESIA; SLAG; CEMENTS; Compositions Thereof, e.g. Mortars, Concrete OR Like Building MATERIALS; Artificial Stone ; Ceramics ; REFRACTORIES; Treatment OF Natural Stone 6

G01H - Measurement OF Mechanical Vibrations OR Ultrasonic, Sonic OR Infrasonic Waves 5

G01D - Measuring NOT Specially Adapted FOR A Specific VARIABLE; Arrangements FOR Measuring TWO OR More Variables NOT Covered IN A Single Other SUBCLASS; Tariff Metering APPARATUS; Measuring OR Testing NOT Otherwise Provided FOR 5

G06F - Electric Digital Data Processing 5

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 4

G01K - Measuring TEMPERATURE; Measuring Quantity OF HEAT; Thermally-sensitive Elements NOT Otherwise Provided FOR 4

G02B - Optical Elements, Systems OR Apparatus 4

B01D - Separation 4

G06Q - Information AND Communication Technology [ICT] Specially Adapted FOR Administrative, Commercial, Financial, Managerial OR Supervisory PURPOSES; Systems OR Methods Specially Adapted FOR Administrative, Commercial, Financial, Managerial OR Supervisory Purposes, NOT Otherwise Provided FOR 4

G06N - Computing Arrangements Based ON Specific Computational Models 4

Top 15 of 67 technology areas

Where it ranks

Overall rank by patents

#5,078

of 49,997 tracked assignees

Innovation Score

47.6 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

What to do with this data

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

Hohai University's lead technology class is G01N (Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties), 30.9% of its portfolio - see every assignee active in that class. Explore G01N
Ranked #5,078 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Hohai University against F. Hoffmann-La Roche AG, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 47.6/100 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.