Where does Changjiang River Scientific Research Institute rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Changjiang River Scientific Research Institute ranks #39,408 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 Changjiang River Scientific Research Institute hold?

Changjiang River Scientific Research Institute holds 6 US utility patents granted between 2023 and 2025, spanning 13 technology areas.

What is Changjiang River Scientific Research Institute's Innovation Score?

Changjiang River Scientific Research Institute has an Innovation Score of 43.3 out of 100 (top 28% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Changjiang River Scientific Research Institute focus on?

Changjiang River Scientific Research Institute's top technology area is G06F (Electric Digital Data Processing) with 3 patents, ranking #8,216 of 13,878 assignees active in that subclass. Grants appear in 13 CPC subclasses total.

Is Changjiang River Scientific Research Institute's patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Changjiang River Scientific Research Institute.

What does claim depth mean for Changjiang River Scientific Research Institute's patents?

Changjiang River Scientific Research Institute's patents average 6.3 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

Changjiang River Scientific Research Institute

Q: How is the Changjiang River Scientific 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 PatentsView assignee record - 6 granted patents across 13 technology areas, recorded in grant years 2023–2025. 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: G06F (Electric Digital Data Processing).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Changjiang ranks #39,408 of 49,997 tracked US assignees by granted-patent volume, with 6 patents across 13 technology areas.

#39,408
of 49,997 US assignees by volume: Top 28%
by Innovation Score (43.3/100): 6.3
avg claims per patent

USPTO PatentsView assignee plate

Corpus R39408 · Foreign Corporation #39,408 · 6 grants

GRANTS-MICRO · LOWER-Q · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-SPARSE · TYPE-FRNCORP · SPAN-YRS · BOOK-RICH

GRANTS-MICRO 6 grants
LOWER-Q #39,408/49,997
PHOTO-FINISH Ceres
CPC-FOCUS G06F · 13 areas
INNOV-PAR 43.3/100
CLAIMS-SPARSE 6.3 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2023–2025 · 3y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: Ceres Technologies, 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 Changjiang’s 43.3 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 6.7 pts (16%) Velocity 20.0 pts (46%) Breadth 12.7 pts (29%) Claim depth 3.8 pts (9%)

Qualcomm Incorporated · highest

85
Changjiang River… · this assignee

43
3D Lighting… · lowest

7

What this shows Changjiang's Innovation Score is 43.3/100 (top 28% 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 Changjiang?

Each dot is one of Changjiang’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). Changjiang’s own 6.3 claims/patent is at or below the 10.3 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Changjiang's grants concentrate

Changjiang River Scientific Research Institute is a focused PatentsView assignee: 13 CPC subclasses with 50% of grants classified under G06F (Electric Digital Data Processing). Peak complete grant year is 2024 (2 grants) versus a trough of 1 in 2023. By volume, Changjiang sits between Ceres Technologies, Inc. and Charm Alarm LLC.

Changjiang's three-year grant acceleration

Changjiang River Scientific Research Institute shows 3 grants in 2022–2024 against only 0 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.

Ceres

6
Cern

6
Certus

6
Changchun Univers…

6
Changzhou Huada K…

6
Charis & Doxa

6
Charles Buist DMD…

6
Charm Alarm

6
Changjiang River… ◀

6

What this shows Changjiang holds 6 patents at rank #39,538, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Changjiang

By rank, the assignees closest to #39,538 in granted patent volume.

Leaders in G06F (Electric Digital Data Processing)

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

Changjiang's Innovation Score vs. every tracked assignee

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

43 Top 28% higher than 72% 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 · 2023–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2023–2019 baseline. Full figures in the table below.

View data table

Changjiang River Scientific Research Institute patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2023	1	16.7%
2024	2	33.3%
2025partial year	3	50.0%

Which technologies does Changjiang River Scientific Research Institute patent most?

G06F - Electric Digital Data Processing 3

Y02A - Technologies FOR Adaptation TO Climate Change 2

E02B - Hydraulic Engineering 2

G01V - GEOPHYSICS; Gravitational MEASUREMENTS; Detecting Masses OR OBJECTS; Tags 1

G01C - Measuring Distances, Levels OR BEARINGS; SURVEYING; NAVIGATION; Gyroscopic INSTRUMENTS; Photogrammetry OR Videogrammetry 1

G01M - Testing Static OR Dynamic Balance OF Machines OR STRUCTURES; Testing OF Structures OR Apparatus, NOT Otherwise Provided FOR 1

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 1

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

E21B - Earth OR Rock DRILLING; Obtaining OIL, GAS, Water, Soluble OR Meltable Materials OR A Slurry OF Minerals From Wells 1

C02F - Treatment OF Water, Waste Water, Sewage, OR Sludge 1

G06V - Image OR Video Recognition OR Understanding 1

H04N - Pictorial Communication, e.g. Television 1

G06T - Image Data Processing OR Generation, IN General 1

Top 13 of 13 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

Changjiang River Scientific Research Institute's patent record in context - here's where to go next.

Changjiang River Scientific Research Institute's lead technology class is G06F (Electric Digital Data Processing), 50% of its portfolio - see every assignee active in that class. Explore G06F
Ranked #39,408 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Changjiang River Scientific Research Institute against Ceres Technologies, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 43.3/100 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.