PlainPatent
USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Nanjing Yunkai Machinery Co., Ltd

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).

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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.

Innovation-score neighbourhood around Nanjing

Lowest and highest poles plus nearest Innovation Score peers, not a full corpus board reprint.

score

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.

Source USPTO PatentsView, PlainPatent Innovation Score As of 2015–2025

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.

Who files at Nanjing's volume?

Granted US patents 2015–2025 versus its nearest-ranked assignees by volume, this company marked ◀

patents

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.

Source USPTO PatentsView, granted utility patents As of 2015–2025

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

This assignee 0 100 every tracked assignee, bucketed by value

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

02468 20222023 1
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?

Top 1 of 1 technology areas

Where it ranks

Overall rank by patents

#36,605

of 49,997 tracked assignees

Innovation Score

31.8 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

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

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.