Where does Keyang Electric Machinery Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Keyang Electric Machinery Co., Ltd. ranks #19,977 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 Keyang Electric Machinery Co., Ltd. hold?

Keyang Electric Machinery Co., Ltd. holds 14 US utility patents granted between 2016 and 2025, spanning 9 technology areas.

What is Keyang Electric Machinery Co., Ltd.'s Innovation Score?

Keyang Electric Machinery Co., Ltd. has an Innovation Score of 39.2 out of 100 (top 39% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Keyang Electric Machinery Co., Ltd. focus on?

Keyang Electric Machinery Co., Ltd.'s top technology area is H02K (Dynamo-electric Machines) with 8 patents, ranking #321 of 1,724 assignees active in that subclass. Grants appear in 9 CPC subclasses total.

Is Keyang Electric Machinery Co., Ltd.'s patent grant rate increasing or decreasing?

Keyang Electric Machinery Co., Ltd.'s recent grant velocity is +350% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for Keyang Electric Machinery Co., Ltd.'s patents?

Keyang Electric Machinery Co., Ltd.'s patents average 9.8 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 Keyang Electric Machinery 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

Keyang Electric Machinery Co., Ltd.

USPTO PatentsView assignee record - 14 granted patents across 9 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: H02K (Dynamo-electric Machines).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Keyang ranks #19,977 of 49,997 tracked US assignees by granted-patent volume, with 14 patents across 9 technology areas.

#19,977
of 49,997 US assignees by volume: Top 39%
by Innovation Score (39.2/100): 9.8
avg claims per patent: +350%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R19977 · Foreign Corporation #19,977 · 14 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-PAR · TYPE-FRNCORP · VEL-SURGE · BOOK-FULL

GRANTS-MICRO 14 grants
MID-PACK #19,977/49,997
PHOTO-FINISH KAP Medical
CPC-NARROW H02K · 9 areas
INNOV-THIN 39.2/100
CLAIMS-PAR 9.8 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-SURGE +350% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: KAP Medical, 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 Keyang’s 39.2 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 9.4 pts (24%) Velocity 13.3 pts (34%) Breadth 10.6 pts (27%) Claim depth 5.9 pts (15%)

Qualcomm Incorporated · highest

85
Keyang Electric… · this assignee

39
3D Lighting… · lowest

7

What this shows Keyang's Innovation Score is 39.2/100 (top 39% 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 Keyang?

Each dot is one of Keyang’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). Keyang’s own 9.8 claims/patent is at or below the 10.5 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Keyang's grants concentrate

Keyang Electric Machinery Co., Ltd. is a focused PatentsView assignee: 9 CPC subclasses with 57.1% of grants classified under H02K (Dynamo-electric Machines). Peak complete grant year is 2023 (5 grants) versus a trough of 1 in 2021. By volume, Keyang sits between KAP Medical, Inc. and Kobelco Cranes Co., Ltd..

Keyang's three-year grant acceleration

Keyang Electric Machinery Co., Ltd. shows 6 grants in 2022–2024 against only 3 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.

KAP Medical

14
Keter Home AND Ga…

14
Kettenbach & KG

14
Keuro Besitz & ED…

14
Kingston Technolo…

14
Kitagawa Ironworks

14
Kiverdi

14
Kobelco Cranes

14
Keyang Electric M… ◀

14

What this shows Keyang holds 14 patents at rank #19,969, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Keyang

By rank, the assignees closest to #19,969 in granted patent volume.

Leaders in H02K (Dynamo-electric Machines)

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

Keyang's Innovation Score vs. every tracked assignee

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

39 Top 39% higher than 61% 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

Keyang Electric Machinery Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	2	14.3%
2020	2	14.3%
2021	1	7.1%
2023	5	35.7%
2024	1	7.1%
2025partial year	3	21.4%

Which technologies does Keyang Electric Machinery Co., Ltd. patent most?

H02K - Dynamo-electric Machines 8

F16D - Couplings FOR Transmitting ROTATION; CLUTCHES; Brakes 6

F16H - Gearing 4

B60T - Vehicle Brake Control Systems OR Parts THEREOF; Brake Control Systems OR Parts Thereof, IN General ; Arrangement OF Braking Elements ON Vehicles IN GENERAL; Portable Devices FOR Preventing Unwanted Movement OF VEHICLES; Vehicle Modifications TO Facilitate Cooling OF Brakes 4

E05Y - Indexing Scheme Associated With Subclasses E05d AND E05f, Relating TO Construction Elements, Electric Control, Power Supply, Power Signal OR Transmission, User Interfaces, Mounting OR Coupling, Details, Accessories, Auxiliary Operations NOT Otherwise Provided FOR, Application Thereof 3

E05F - Devices FOR Moving Wings Into Open OR Closed POSITION; Checks FOR WINGS; Wing Fittings NOT Otherwise Provided FOR, Concerned With THE Functioning OF THE Wing 3

H01R - Electrically-conductive CONNECTIONS; Structural Associations OF A Plurality OF Mutually-insulated Electrical Connecting ELEMENTS; Coupling DEVICES; Current Collectors 2

F16F - SPRINGS; SHOCK-ABSORBERS; Means FOR Damping Vibration 1

B60J - Windows, Windscreens, Non-fixed Roofs, Doors, OR Similar Devices FOR VEHICLES; Removable External Protective Coverings Specially Adapted FOR Vehicles 1

Top 9 of 9 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

Keyang Electric Machinery Co., Ltd.'s patent record in context - here's where to go next.

Keyang Electric Machinery Co., Ltd.'s lead technology class is H02K (Dynamo-electric Machines), 57.1% of its portfolio - see every assignee active in that class. Explore H02K
Ranked #19,977 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Keyang Electric Machinery Co., Ltd. against KAP Medical, Inc., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 39.2/100 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.