Where does Nanjing Yunkai Machinery Co., Ltd rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Nanjing Yunkai Machinery Co., Ltd ranks #36,605 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 Nanjing Yunkai Machinery Co., Ltd hold?

Nanjing Yunkai Machinery Co., Ltd holds 7 US utility patents granted between 2022 and 2023, spanning 1 technology areas.

What is Nanjing Yunkai Machinery Co., Ltd's Innovation Score?

Nanjing Yunkai Machinery Co., Ltd has an Innovation Score of 31.8 out of 100 (39th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Nanjing Yunkai Machinery Co., Ltd's patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Nanjing Yunkai Machinery Co., Ltd.

What does claim depth mean for Nanjing Yunkai Machinery Co., Ltd's patents?

Nanjing Yunkai Machinery Co., Ltd's patents average 1.7 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 Nanjing Yunkai 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

Nanjing Yunkai Machinery Co., Ltd

Q: What technology areas does Nanjing Yunkai Machinery Co., Ltd focus on?

Nanjing Yunkai Machinery Co., Ltd's top technology area is A61H (Physical Therapy Apparatus, e.g. Devices FOR Locating OR Stimulating Reflex Points IN THE BODY; Artificial RESPIRATION; MASSAGE; Bathing Devices FOR Special Therapeutic OR Hygienic Purposes OR Specific Parts OF THE Body) with 1 patents, ranking #502 of 752 assignees active in that subclass. Grants appear in 1 CPC subclasses total.

USPTO PatentsView assignee record - 7 granted patents across 1 technology areas, recorded in grant years 2022–2023. 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: A61H (Physical Therapy Apparatus, e.g. Devices FOR Locating OR Stimulating Reflex Points IN THE BODY; Artificial RESPIRATION; MASSAGE; Bathing Devices FOR Special Therapeutic OR Hygienic Purposes OR Specifi).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Nanjing ranks #36,605 of 49,997 tracked US assignees by granted-patent volume, with 7 patents across 1 technology areas.

#36,605
of 49,997 US assignees by volume: 39th percentile
by Innovation Score (31.8/100): 1.7
avg claims per patent

USPTO PatentsView assignee plate

Corpus R36605 · Foreign Corporation #36,605 · 7 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-SPARSE · TYPE-FRNCORP · SPAN-YRS · BOOK-RICH

GRANTS-MICRO 7 grants
MID-PACK #36,605/49,997
PHOTO-FINISH Nakuru S R L
CPC-NARROW A61H · 1 areas
INNOV-THIN 31.8/100
CLAIMS-SPARSE 1.7 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2022–2023 · 2y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: Nakuru S.R.L. (±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 Nanjing’s 31.8 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 (23%) Velocity 20.0 pts (63%) Breadth 3.5 pts (11%) Claim depth 1.0 pts (3%)

Qualcomm Incorporated · highest

85
Nanjing Yunkai… · this assignee

32
3D Lighting… · lowest

7

What this shows Nanjing's Innovation Score is 31.8/100 (39th 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 Nanjing?

Each dot is one of Nanjing’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). Nanjing’s own 1.7 claims/patent is at or below the 12.0 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Nanjing's grants concentrate

Nanjing Yunkai Machinery Co., Ltd is a focused PatentsView assignee: 1 CPC subclasses with 14.3% of grants classified under A61H (Physical Therapy Apparatus, e.g. Devices FOR Locating OR Stimulating Reflex Points IN THE BODY; Artificial RESPIRATION; MASSAGE; Bathing Devices FOR Special Therapeutic OR Hygienic Purposes OR Specifi). Peak complete grant year is 2022 (6 grants) versus a trough of 1 in 2023. By volume, Nanjing sits between Nakuru S.R.L. and Nanovision Technology (BEIJING) Co., Ltd..

Nanjing's three-year grant acceleration

Nanjing Yunkai Machinery Co., Ltd shows 7 grants in 2022–2024 against only 0 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.

Nakuru S R L

7
Nanjing Anji Biol…

7
Nanjing Bestzyme…

7
Nanjing Transther…

7
Nanocomposix

7
Nanogas

7
Nanopareil

7
Nanovision Techno…

7
Nanjing Yunkai Ma… ◀

7

What this shows Nanjing holds 7 patents at rank #36,579, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Nanjing

By rank, the assignees closest to #36,579 in granted patent volume.

Leaders in A61H (Physical Therapy Apparatus)

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

Nanjing's Innovation Score vs. every tracked assignee

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

32 39th percentile higher than 39% 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 · 2022–2023

Grants by year

Teal-shaded recent years (2020–present) versus the 2022–2019 baseline. Full figures in the table below.

View data table

Nanjing Yunkai Machinery Co., Ltd patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2022	6	85.7%
2023	1	14.3%

Which technologies does Nanjing Yunkai Machinery Co., Ltd patent most?

A61H - Physical Therapy Apparatus, e.g. Devices FOR Locating OR Stimulating Reflex Points IN THE BODY; Artificial RESPIRATION; MASSAGE; Bathing Devices FOR Special Therapeutic OR Hygienic Purposes OR Specific Parts OF THE Body 1

Top 1 of 1 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

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

Nanjing Yunkai Machinery Co., Ltd's lead technology class is A61H (Physical Therapy Apparatus, e.g. Devices FOR Locating OR Stimulating Reflex Points IN THE BODY; Artificial RESPIRATION; MASSAGE; Bathing Devices FOR Special Therapeutic OR Hygienic Purposes OR Specifi), 14.3% of its portfolio - see every assignee active in that class. Explore A61H
Ranked #36,605 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Nanjing Yunkai Machinery Co., Ltd against Nakuru S.R.L., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 31.8/100 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.