Where does Changshu Tongrun Auto Accessory Co., Ltd rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Changshu Tongrun Auto Accessory Co., Ltd ranks #34,720 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 Changshu Tongrun Auto Accessory Co., Ltd hold?

Changshu Tongrun Auto Accessory Co., Ltd holds 7 US utility patents granted between 2016 and 2025, spanning 6 technology areas.

What is Changshu Tongrun Auto Accessory Co., Ltd's Innovation Score?

Changshu Tongrun Auto Accessory Co., Ltd has an Innovation Score of 17.6 out of 100 (4th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Changshu Tongrun Auto Accessory Co., Ltd's patent grant rate increasing or decreasing?

Changshu Tongrun Auto Accessory Co., Ltd's recent grant velocity is -80% compared to the prior five-year period (grant years, not application filing dates). Grant activity has slowed relative to earlier years.

What does claim depth mean for Changshu Tongrun Auto Accessory Co., Ltd's patents?

Changshu Tongrun Auto Accessory Co., Ltd's patents average 3.0 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 Changshu Tongrun Auto Accessory Co., Ltd 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

Changshu Tongrun Auto Accessory Co., Ltd

Q: What technology areas does Changshu Tongrun Auto Accessory Co., Ltd focus on?

Changshu Tongrun Auto Accessory Co., Ltd's top technology area is B66F (Hoisting, Lifting, Hauling OR Pushing, NOT Otherwise Provided FOR, e.g. Devices Which Apply A Lifting OR Pushing Force Directly TO THE Surface OF A Load) with 2 patents, ranking #170 of 447 assignees active in that subclass. Grants appear in 6 CPC subclasses total.

USPTO PatentsView assignee record - 7 granted patents across 6 technology areas, recorded in grant years 2016–2025. 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: B66F (Hoisting, Lifting, Hauling OR Pushing, NOT Otherwise Provided FOR, e.g. Devices Which Apply A Lifting OR Pushing Force Directly TO THE Surface OF A Load).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Changshu ranks #34,720 of 49,997 tracked US assignees by granted-patent volume, with 7 patents across 6 technology areas.

#34,720
of 49,997 US assignees by volume: 4th percentile
by Innovation Score (17.6/100): 3.0
avg claims per patent: -80%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R34720 · Foreign Corporation #34,720 · 7 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-NARROW · INNOV-LOW · CLAIMS-SPARSE · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 7 grants
MID-PACK #34,720/49,997
PHOTO-FINISH CH3 Solutions
CPC-NARROW B66F · 6 areas
INNOV-LOW 17.6/100
CLAIMS-SPARSE 3.0 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -80% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: CH3 Solutions, LLC (±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 Changshu’s 17.6 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 7.2 pts (41%) Velocity 0.0 pts (0%) Breadth 8.7 pts (49%) Claim depth 1.8 pts (10%)

Qualcomm Incorporated · highest

85
Changshu Tongrun… · this assignee

18
3D Lighting… · lowest

7

What this shows Changshu's Innovation Score is 17.6/100 (4th percentile 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 Changshu?

Each dot is one of Changshu’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). Changshu’s own 3.0 claims/patent is at or below the 13.6 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Changshu's grants concentrate

Changshu Tongrun Auto Accessory Co., Ltd is a focused PatentsView assignee: 6 CPC subclasses with 28.6% of grants classified under B66F (Hoisting, Lifting, Hauling OR Pushing, NOT Otherwise Provided FOR, e.g. Devices Which Apply A Lifting OR Pushing Force Directly TO THE Surface OF A Load). Peak complete grant year is 2018 (2 grants) versus a trough of 1 in 2016. By volume, Changshu sits between CH3 Solutions, LLC and Chemex Corporation.

CH3 Solutions

7
CHA Biotech

7
Chance Line Indus…

7
Chandler Wilkinson

7
Chase Therapeutics

7
CHD Bioscience

7
Chemence

7
Chemex

7
Changshu Tongrun… ◀

7

What this shows Changshu holds 7 patents at rank #34,665, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Changshu

By rank, the assignees closest to #34,665 in granted patent volume.

Leaders in B66F (Hoisting)

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

Changshu's Innovation Score vs. every tracked assignee

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

18 4th percentile higher than 4% 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 · 2016–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2016–2019 baseline. Full figures in the table below.

View data table

Changshu Tongrun Auto Accessory Co., Ltd patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	1	14.3%
2017	1	14.3%
2018	2	28.6%
2019	1	14.3%
2021	1	14.3%
2025partial year	1	14.3%

Which technologies does Changshu Tongrun Auto Accessory Co., Ltd patent most?

B66F - Hoisting, Lifting, Hauling OR Pushing, NOT Otherwise Provided FOR, e.g. Devices Which Apply A Lifting OR Pushing Force Directly TO THE Surface OF A Load 2

F04B - Positive-displacement Machines FOR LIQUIDS; Pumps 1

G05D - Systems FOR Controlling OR Regulating Non-electric Variables 1

Y10T - Technical Subjects Covered BY Former US Classification 1

F15B - Systems Acting BY Means OF Fluids IN GENERAL; Fluid-pressure Actuators, e.g. SERVOMOTORS; Details OF Fluid-pressure Systems, NOT Otherwise Provided FOR 1

F16K - VALVES; TAPS; COCKS; ACTUATING-FLOATS; Devices FOR Venting OR Aerating 1

Top 6 of 6 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

Changshu Tongrun Auto Accessory Co., Ltd's patent record in context - here's where to go next.

Changshu Tongrun Auto Accessory Co., Ltd's lead technology class is B66F (Hoisting, Lifting, Hauling OR Pushing, NOT Otherwise Provided FOR, e.g. Devices Which Apply A Lifting OR Pushing Force Directly TO THE Surface OF A Load), 28.6% of its portfolio - see every assignee active in that class. Explore B66F
Ranked #34,720 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Changshu Tongrun Auto Accessory Co., Ltd against CH3 Solutions, LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 17.6/100 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.