USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Chongqing Institute OF EAST China Normal University

USPTO PatentsView assignee record - 34 granted patents across 33 technology areas, recorded in grant years 2021–2025. 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: G02B (OPTICAL ELEMENTS, SYSTEMS OR APPARATUS).

Compiled by PlainPatent · May 15, 2026

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

12.7

Avg claims per patent

5-year grant velocity

The verdict

According to USPTO PatentsView, Chongqing ranks #9,230 of 50,000 tracked US assignees by granted-patent volume, with 34 patents across 33 technology areas.

#9,230
of 50,000 US assignees by volume: Top 3%
by Innovation Score (60.2/100): 12.7
avg claims per patent

Portfolio overview

Chongqing Institute OF EAST China Normal University has been granted 34 US utility patents between 2021 and 2025, placing Chongqing Institute OF EAST China Normal University at #9,230 of 50,000 across all assignees tracked by PlainPatent. This portfolio spans 33 distinct Cooperative Patent Classification (CPC) subclasses, averaging 12.7 claims per patent with primary concentration in G02B (OPTICAL ELEMENTS, SYSTEMS OR APPARATUS). As a Foreign Corporation, Chongqing Institute OF EAST China Normal University is one of the more focused assignees in the PatentsView dataset. By volume, Chongqing sits between CCS Technology Corporation (34 patents, rank #9,218) and Cabela's Llc (34 patents, rank #9,226) - the closest US assignees by grant volume. The composite Innovation Score of 60.2/100 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. Historical data spans 2021 through 2025, with 34 total grants over that period. 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. Chongqing Institute OF EAST China Normal University's 12.7 average claims per patent is an average count, not a measure of claim scope, legal strength, enforceability, or design-around risk. The record spans 33 CPC subclasses. Combined with portfolio volume, these figures let readers compare the documented grant records of assignees in similar technology classes.

CCS Technology

34
CEAT

34
Centaurus Biophar…

34
Ceragem

34
Chungbuk National…

34
Clari

34
CLAY PAKY S p A

34
Cabela's

34
Chongqing Institu… ◀

34

What this shows Chongqing holds 34 patents at rank #9,222, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Chongqing

By rank, the assignees closest to #9,222 in granted patent volume.

Leaders in G02B (Optical Elements)

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

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for Chongqing, neither rank-band nor same-CPC leaders (those blocks stay above).

Similar innovation score

Nearest assignees by Innovation Score (60 here).

Biotronik SE & Co. KG 60 Verdant Robotics, Inc. 60 Lenzing Aktiengesellschaft 60 Sercel, Inc 60

Chongqing's Innovation Score vs. every tracked assignee

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

60 Top 3% higher than 97% 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 · 2021–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2021–2019 baseline. Full figures in the table below.

View data table

Chongqing Institute OF EAST China Normal University patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2021	2	5.9%
2022	6	17.6%
2023	7	20.6%
2024	9	26.5%
2025partial year	10	29.4%

Which technologies does Chongqing Institute OF EAST China Normal University patent most?

G02B - OPTICAL ELEMENTS, SYSTEMS OR APPARATUS 7

G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 7

G01J - MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY 7

H01S - DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL 6

B23K - SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM 6

C23C - COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL 4

C04B - LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE ; CERAMICS ; REFRACTORIES; TREATMENT OF NATURAL STONE 4

G02F - OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS 4

C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS 3

C01G - COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F 3

C01B - NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C 3

B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 3

B81C - PROCESSES OR APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OR TREATMENT OF MICROSTRUCTURAL DEVICES OR SYSTEMS 2

Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS 2

C03C - CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS 2

Top 15 of 33 technology areas

Grant record at a glance

Portfolio Volume 34 grants

CPC subclasses 33

Avg. claims / grant 12.7

Historical grant data only; it does not rate legal strength or current strategy.

Where it ranks

Overall rank by patents

#9,230

of 50,000 tracked assignees

Innovation Score

60.2 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

Where does Chongqing Institute OF EAST China Normal University rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Chongqing Institute OF EAST China Normal University ranks #9,230 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 Chongqing Institute OF EAST China Normal University hold?

Chongqing Institute OF EAST China Normal University holds 34 US utility patents granted between 2021 and 2025, spanning 33 technology areas.

What is Chongqing Institute OF EAST China Normal University's Innovation Score?

Chongqing Institute OF EAST China Normal University has an Innovation Score of 60.2 out of 100 (top 3% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Chongqing Institute OF EAST China Normal University focus on?

Chongqing Institute OF EAST China Normal University's top technology area is G02B (OPTICAL ELEMENTS, SYSTEMS OR APPARATUS) with 7 patents. Grants appear in 33 CPC subclasses total.

Is Chongqing Institute OF EAST China Normal University's patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Chongqing Institute OF EAST China Normal University.

What does claim depth mean for Chongqing Institute OF EAST China Normal University's patents?

Chongqing Institute OF EAST China Normal University's patents average 12.7 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 Chongqing Institute OF EAST China 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.

How to use this portfolio

Chongqing's 34 grants land it in the top 3% by Innovation Score, but volume alone doesn't tell you where the strength sits.

Read that count against the largest US assignees before treating it as dominance - Chongqing ranks #9,230 of 50,000. Top 50 holders
Most of this portfolio concentrates in G02B - see who else leads that technology area. G02B leaders
Check what the four-part Innovation Score actually rewards before comparing it to another company. How the score works

Patent counts and the Innovation Score measure patenting activity, not commercial success or the legal strength of any patent. Many patents are filed defensively. Verify the status of an individual patent against official USPTO records.

Cite this page

PlainPatent, “Chongqing Institute OF EAST China Normal University Patent Portfolio.” Compiled from the underlying federal/official data source; data as of 2015–2025. https://plainpatent.com/company/chongqing-institute-of-east-china-normal-university/

Formal citation formats (APA / MLA)

APA: PlainPatent. (2015). Chongqing Institute OF EAST China Normal University Patent Portfolio. Retrieved August 22, 2026, from https://plainpatent.com/company/chongqing-institute-of-east-china-normal-university/

MLA: "Chongqing Institute OF EAST China Normal University Patent Portfolio." PlainPatent, 2015, https://plainpatent.com/company/chongqing-institute-of-east-china-normal-university/.

You are welcome to quote these figures with attribution to PlainPatent and the underlying source. The URL above is stable. See our Terms of Use for what reuse is permitted.

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.