Where does Guangzhou Changen Electronic Technology Co., Ltd rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Guangzhou Changen Electronic Technology Co., Ltd ranks #47,246 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 Guangzhou Changen Electronic Technology Co., Ltd hold?

Guangzhou Changen Electronic Technology Co., Ltd holds 5 US utility patents granted between 2020 and 2021, spanning 7 technology areas.

What is Guangzhou Changen Electronic Technology Co., Ltd's Innovation Score?

Guangzhou Changen Electronic Technology Co., Ltd has an Innovation Score of 22.7 out of 100 (11th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Guangzhou Changen Electronic Technology Co., Ltd focus on?

Guangzhou Changen Electronic Technology Co., Ltd's top technology area is G01R (Measuring Electric VARIABLES; Measuring Magnetic Variables) with 3 patents, ranking #1,290 of 3,424 assignees active in that subclass. Grants appear in 7 CPC subclasses total.

Is Guangzhou Changen Electronic Technology Co., Ltd's patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Guangzhou Changen Electronic Technology Co., Ltd.

What does claim depth mean for Guangzhou Changen Electronic Technology Co., Ltd's patents?

Guangzhou Changen Electronic Technology Co., Ltd's patents average 12.0 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.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Guangzhou Changen Electronic Technology Co., Ltd

Q: How is the Guangzhou Changen Electronic Technology 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 PatentsView assignee record - 5 granted patents across 7 technology areas, recorded in grant years 2020–2021. 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: G01R (Measuring Electric VARIABLES; Measuring Magnetic Variables).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Guangzhou ranks #47,246 of 49,997 tracked US assignees by granted-patent volume, with 5 patents across 7 technology areas.

#47,246
of 49,997 US assignees by volume: 11th percentile
by Innovation Score (22.7/100): 12.0
avg claims per patent

USPTO PatentsView assignee plate

Corpus R47246 · Foreign Corporation #47,246 · 5 grants

GRANTS-MICRO · BOTTOM-DECILE · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-RICH · TYPE-FRNCORP · SPAN-YRS · BOOK-RICH

GRANTS-MICRO 5 grants
BOTTOM-DECILE #47,246/49,997
PHOTO-FINISH Guangdong Yuhao
CPC-NARROW G01R · 7 areas
INNOV-THIN 22.7/100
CLAIMS-RICH 12.0 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2020–2021 · 2y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: Guangdong Yuhao Electronics Co., Ltd. (±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 Guangzhou’s 22.7 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 6.2 pts (27%) Velocity 0.0 pts (0%) Breadth 9.4 pts (41%) Claim depth 7.2 pts (32%)

Qualcomm Incorporated · highest

85
Guangzhou Changen… · this assignee

23
3D Lighting… · lowest

7

What this shows Guangzhou's Innovation Score is 22.7/100 (11th 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 Guangzhou?

Each dot is one of Guangzhou’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). Guangzhou’s own 12.0 claims/patent is ABOVE the 11.0 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Guangzhou's grants concentrate

Guangzhou Changen Electronic Technology Co., Ltd is a focused PatentsView assignee: 7 CPC subclasses with 60% of grants classified under G01R (Measuring Electric VARIABLES; Measuring Magnetic Variables). Peak complete grant year is 2020 (3 grants) versus a trough of 2 in 2021. By volume, Guangzhou sits between Guangdong Yuhao Electronics Co., Ltd. and Guangzhou Institute OF Building Science Co., Ltd..

Guangdong Yuhao

5
Guangdong Zhongsh…

5
Guangxi Jiufu Bio…

5
Guangzhou Antu El…

5
Guangzhou Fullriv…

5
Guangzhou Henovco…

5
Guangzhou Huya In…

5
Guangzhou Institu…

5
Guangzhou Changen… ◀

5

What this shows Guangzhou holds 5 patents at rank #47,111, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Guangzhou

By rank, the assignees closest to #47,111 in granted patent volume.

Leaders in G01R (Measuring Electric Variables)

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

Guangzhou's Innovation Score vs. every tracked assignee

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

23 11th percentile higher than 11% 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 · 2020–2021

Grants by year

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

View data table

Guangzhou Changen Electronic Technology Co., Ltd patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2020	3	60.0%
2021	2	40.0%

Which technologies does Guangzhou Changen Electronic Technology Co., Ltd patent most?

G01R - Measuring Electric VARIABLES; Measuring Magnetic Variables 3

H01Q - Antennas, i.e. Radio Aerials 3

F15B - Systems Acting BY Means OF Fluids IN GENERAL; Fluid-pressure Actuators, e.g. SERVOMOTORS; Details OF Fluid-pressure Systems, NOT Otherwise Provided FOR 2

G01B - Measuring Length, Thickness OR Similar Linear DIMENSIONS; Measuring ANGLES; Measuring AREAS; Measuring Irregularities OF Surfaces OR Contours 1

H04N - Pictorial Communication, e.g. Television 1

G08B - Signalling OR Calling SYSTEMS; Order TELEGRAPHS; Alarm Systems 1

H05K - Printed CIRCUITS; Casings OR Constructional Details OF Electric APPARATUS; Manufacture OF Assemblages OF Electrical Components 1

Top 7 of 7 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

Guangzhou Changen Electronic Technology Co., Ltd's patent record in context - here's where to go next.

Guangzhou Changen Electronic Technology Co., Ltd's lead technology class is G01R (Measuring Electric VARIABLES; Measuring Magnetic Variables), 60% of its portfolio - see every assignee active in that class. Explore G01R
Ranked #47,246 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Guangzhou Changen Electronic Technology Co., Ltd against Guangdong Yuhao Electronics Co., Ltd., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 22.7/100 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.