Where does Nanjing Hydraulic Research Institute rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Nanjing Hydraulic Research Institute ranks #16,216 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 Nanjing Hydraulic Research Institute hold?

Nanjing Hydraulic Research Institute holds 18 US utility patents granted between 2019 and 2025, spanning 32 technology areas.

What is Nanjing Hydraulic Research Institute's Innovation Score?

Nanjing Hydraulic Research Institute has an Innovation Score of 46.4 out of 100 (top 21% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Nanjing Hydraulic Research Institute focus on?

Nanjing Hydraulic Research Institute's top technology area is E02B (Hydraulic Engineering) with 6 patents, ranking #26 of 256 assignees active in that subclass. Grants appear in 32 CPC subclasses total.

Is Nanjing Hydraulic Research Institute's patent grant rate increasing or decreasing?

Nanjing Hydraulic Research Institute's recent grant velocity is +1500% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Nanjing Hydraulic Research Institute's patents?

Nanjing Hydraulic Research Institute's patents average 6.6 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 Nanjing Hydraulic Research Institute 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

Nanjing Hydraulic Research Institute

USPTO PatentsView assignee record - 18 granted patents across 32 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: E02B (Hydraulic Engineering).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Nanjing ranks #16,216 of 49,997 tracked US assignees by granted-patent volume, with 18 patents across 32 technology areas.

#16,216
of 49,997 US assignees by volume: Top 21%
by Innovation Score (46.4/100): 6.6
avg claims per patent: +1500%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R16216 · Foreign Corporation #16,216 · 18 grants

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

GRANTS-MICRO 18 grants
MID-PACK #16,216/49,997
PHOTO-FINISH Nalu Medical
CPC-FOCUS E02B · 32 areas
INNOV-PAR 46.4/100
CLAIMS-SPARSE 6.6 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +1500% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Nalu Medical, 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 Nanjing’s 46.4 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 10.2 pts (22%) Velocity 12.2 pts (26%) Breadth 20.0 pts (43%) Claim depth 4.0 pts (9%)

Qualcomm Incorporated · highest

85
Nanjing Hydraulic… · this assignee

46
3D Lighting… · lowest

7

What this shows Nanjing's Innovation Score is 46.4/100 (top 21% 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 Nanjing?

Each dot is one of Nanjing’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). Nanjing’s own 6.6 claims/patent is at or below the 19.2 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Nanjing's grants concentrate

Nanjing Hydraulic Research Institute is a focused PatentsView assignee: 32 CPC subclasses with 33.3% of grants classified under E02B (Hydraulic Engineering). Peak complete grant year is 2023 (6 grants) versus a trough of 1 in 2019. By volume, Nanjing sits between Nuralogix Corporation and National University Hospital (Singapore) Pte Ltd.

Nanjing's three-year grant acceleration

Nanjing Hydraulic Research Institute shows 11 grants in 2022–2024 against only 6 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.

Nuralogix

18
Nuvation BIO

18
NYX

18
Nalu Medical

18
Nanofiber Solutio…

18
Nantmobility

18
National Gypsum P…

18
National Universi…

18
Nanjing Hydraulic… ◀

18

What this shows Nanjing holds 18 patents at rank #16,230, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Nanjing

By rank, the assignees closest to #16,230 in granted patent volume.

Leaders in E02B (Hydraulic Engineering)

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

Nanjing's Innovation Score vs. every tracked assignee

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

46 Top 21% higher than 79% 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 · 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

Nanjing Hydraulic Research Institute patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2019	1	5.6%
2020	4	22.2%
2021	1	5.6%
2023	6	33.3%
2024	5	27.8%
2025partial year	1	5.6%

Which technologies does Nanjing Hydraulic Research Institute patent most?

E02B - Hydraulic Engineering 6

Y02A - Technologies FOR Adaptation TO Climate Change 5

G01N - Investigating OR Analysing Materials BY Determining Their Chemical OR Physical Properties 4

C02F - Treatment OF Water, Waste Water, Sewage, OR Sludge 3

G01C - Measuring Distances, Levels OR BEARINGS; SURVEYING; NAVIGATION; Gyroscopic INSTRUMENTS; Photogrammetry OR Videogrammetry 3

G01F - Measuring Volume, Volume Flow, Mass Flow OR Liquid LEVEL; Metering BY Volume 3

G01W - Meteorology 2

E03B - Installations OR Methods FOR Obtaining, Collecting, OR Distributing Water 2

A01K - Animal HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; Rearing OR Breeding Animals, NOT Otherwise Provided FOR; NEW Breeds OF Animals 2

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 1

A01B - Soil Working IN Agriculture OR FORESTRY; Parts, Details, OR Accessories OF Agricultural Machines OR Implements, IN General 1

A01G - HORTICULTURE; Cultivation OF Vegetables, Flowers, Rice, Fruit, Vines, Hops OR SEAWEED; FORESTRY; Watering 1

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 1

E03F - SEWERS; Cesspools 1

E02C - Ship-lifting Devices OR Mechanisms 1

Top 15 of 32 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

Nanjing Hydraulic Research Institute's patent record in context - here's where to go next.

Nanjing Hydraulic Research Institute's lead technology class is E02B (Hydraulic Engineering), 33.3% of its portfolio - see every assignee active in that class. Explore E02B
Ranked #16,216 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Nanjing Hydraulic Research Institute against Nuralogix Corporation, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 46.4/100 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.