USPTO 2015–2025 USPTO PatentsView Foreign Government

Changzhou Institute OF Technology

USPTO PatentsView assignee record - 9 granted patents across 13 technology areas, active 2023–2025. Filing-trend and competitive-moat analysis cross-referenced to USPTO Patent Public Search. Primary class: C25B (ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR).

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team

Explore the portfolio See the ranking

Total patents granted

CPC technology areas

10.3

Avg claims per patent

5-year filing velocity

The verdict

Changzhou holds 9 US patents across 13 technology areas, rank #28,351 of 50,000 tracked assignees.

#28,351
of 50,000 US assignees by volume: Top 20%
by Innovation Score (46.9/100): 10.3
avg claims per patent

Portfolio overview

Changzhou Institute OF Technology has been granted 9 US utility patents between 2023 and 2025, placing Changzhou Institute OF Technology at rank #28,351 across all assignees tracked by PlainPatent. This portfolio spans 13 distinct Cooperative Patent Classification (CPC) subclasses, averaging 10.3 claims per patent with primary concentration in C25B (ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR). As a Foreign Government, Changzhou Institute OF Technology is one of the more focused assignees in the PatentsView dataset. By volume, Changzhou sits between Cevec Pharmaceuticals Gmbh (9 patents, rank #28,347) and Chaossearch, Inc. (9 patents, rank #28,355) - the closest US assignees by grant volume. The composite Innovation Score of 46.9/100 blends portfolio volume, filing velocity, technology breadth, and claim depth into a single comparable measure drawn directly from USPTO PatentsView records.

Filing cadence tells the strategic story. Historical data spans 2023 through 2025, with 9 total grants over that period. Velocity comparisons require five years of historical filings to calibrate. The Foreign Government classification further shapes interpretation, since corporate, government, and individual filers pursue patents for materially different reasons.

Claim depth and technology breadth together indicate competitive posture. Changzhou Institute OF Technology's 10.3 average claims per patent suggests focused, narrowly drawn claims typical of single-invention filings, while concentration in 13 subclasses points to a focused technical program. Combined with portfolio volume, these signals let analysts, investors, and licensing professionals benchmark Changzhou Institute OF Technology against peers pursuing similar technology classes.

Cevec Pharmaceuti…

9
Chameleon Holding

9
Chang GUNG Biotec…

9
Changzhou Canbo T…

9
Changzhou Shine S…

9
Channel WELL Tech…

9
Chaologix

9
Chaossearch

9
Changzhou Institu… ◀

9

What this shows Changzhou holds 9 patents at rank #28,351, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Changzhou

By rank, the assignees closest to #28,351 in granted patent volume.

Leaders in C25B (Electrolytic OR Electrophoretic Processes FOR THE Product…)

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

Changzhou's Innovation Score vs. every tracked assignee

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

47 Top 20% higher than 80% 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 · 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

Changzhou Institute OF Technology patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2023	1	11.1%
2024	3	33.3%
2025	5	55.6%

Which technologies does Changzhou Institute OF Technology patent most?

C25B - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR 3

Y02W - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT 3

H10F - INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION 2

B01D - SEPARATION 1

B09B - DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR 1

B25J - MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES 1

F27D - DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE 1

F27B - FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS 1

C04B - LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE ; CERAMICS ; REFRACTORIES; TREATMENT OF NATURAL STONE 1

H01L - SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10 1

B60W - CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT 1

Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION 1

B60K - ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY 1

Top 13 of 13 technology areas

Patent Moat Analysis

Portfolio Volume Light

Tech Breadth Focused

Claim Depth Simple

Where it ranks

Overall rank by patents

#28,351

Across all tracked assignees

Innovation Score

46.9 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

Frequently Asked Questions

How many patents does Changzhou Institute OF Technology hold?

Changzhou Institute OF Technology holds 9 US granted patents filed between 2023 and 2025, spanning 13 technology areas.

What is Changzhou Institute OF Technology's Innovation Score?

Changzhou Institute OF Technology has an Innovation Score of 46.9 out of 100. This composite metric weighs portfolio volume (40%), filing velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Changzhou Institute OF Technology focus on?

Changzhou Institute OF Technology's top technology area is C25B (ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR) with 3 patents. The company has filed patents in 13 CPC subclasses total.

Is Changzhou Institute OF Technology's patent filing rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Changzhou Institute OF Technology.

What does claim depth mean for Changzhou Institute OF Technology's patents?

Changzhou Institute OF Technology's patents average 10.3 claims each. This is relatively simple claim structure, typical for focused inventions.

How is the Changzhou Institute OF Technology 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

Changzhou's 9 grants land it in the top 20% 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 - Changzhou ranks #28,351 of 50,000. Top 50 holders
Most of this portfolio concentrates in C25B - see who else leads that technology area. C25B 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.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial

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 byPlainPatent Editorial, US Patent Intelligence Editorial Team

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.