PlainPatent
USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Changsha Yuwen Network Technology Co., Ltd.

USPTO PatentsView assignee record - 6 granted patents across 1 technology areas, recorded in grant years 2021–2022. 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: A61J (Containers Specially Adapted FOR Medical OR Pharmaceutical PURPOSES; Devices OR Methods Specially Adapted FOR Bringing Pharmaceutical Products Into Particular Physical OR Administering FORMS; Devices ).

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The verdict

According to USPTO PatentsView, Changsha ranks #39,409 of 49,997 tracked US assignees by granted-patent volume, with 6 patents across 1 technology areas.

#39,409
of 49,997 US assignees by volume
3rd percentile
by Innovation Score (14.1/100)
4.2
avg claims per patent

USPTO PatentsView assignee plate

Corpus R39409 · Foreign Corporation #39,409 · 6 grants

GRANTS-MICRO · LOWER-Q · PHOTO-FINISH · CPC-NARROW · INNOV-LOW · CLAIMS-SPARSE · TYPE-FRNCORP · SPAN-YRS · BOOK-RICH

  • GRANTS-MICRO 6 grants
  • LOWER-Q #39,409/49,997
  • PHOTO-FINISH CH Biomedical (USA)
  • CPC-NARROW A61J · 1 areas
  • INNOV-LOW 14.1/100
  • CLAIMS-SPARSE 4.2 claims/avg
  • TYPE-FRNCORP Foreign Corp
  • SPAN-YRS 2021–2022 · 2y
  • BOOK-RICH 9/10 fields

Nearest grant-volume peer: CH Biomedical (USA) 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 Changsha’s 14.1 Innovation Score adds up

The same four weighted components behind every Innovation Score on PlainPatent: portfolio volume, grant velocity, technology breadth, and claim depth.

Innovation-score neighbourhood around Changsha

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

score

What this shows Changsha's Innovation Score is 14.1/100 (3rd 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

Does more volume mean deeper claims for Changsha?

Each dot is one of Changsha’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). Changsha’s own 4.2 claims/patent is at or below the 10.7 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

Changsha vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView. 2×2 strategic matrix plotting 9 entities by Granted patents (volume) (X) and Avg claims / patent (Y), with a crosshair dividing the plot into four quadrants. Volume + depthSelective & thoroughVolume over depthLean filer 5.96.06.066.06.06.1 0510152025 Granted patents (volume) Avg claims / patent CH Biomedical (USA) Inc. - 6, 19.17CH Biomedical (US…Chambio Co., Ltd. - 6, 1.83ChambioChang Yang Material Corp. - 6, 9.83Chang Yang Materi…Changhua Christian Medical Foundation Changhua Christian Hospital - 6, 14.17Changhua Christia…Changzhou Sunwood International Trading Co., Ltd. - 6, 10.67Changzhou Sunwood…Channel Master, LLC - 6, 11.5Channel MasterCharles R. Drew University OF Medicine AND Science - 6, 12.33Charles R Drew Un…Charming World Inc. - 6, 1Charming WorldChangsha Yuwen Network Technology Co., Ltd. - 6, 4.17Changsha Yuwen Ne…
Changsha vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where Changsha's grants concentrate

Changsha Yuwen Network Technology Co., Ltd. is a focused PatentsView assignee: 1 CPC subclasses with 16.7% of grants classified under A61J (Containers Specially Adapted FOR Medical OR Pharmaceutical PURPOSES; Devices OR Methods Specially Adapted FOR Bringing Pharmaceutical Products Into Particular Physical OR Administering FORMS; Devices ). Peak complete grant year is 2021 (5 grants) versus a trough of 1 in 2022. By volume, Changsha sits between CH Biomedical (USA) Inc. and Charming World Inc..

Changsha's three-year grant acceleration

Changsha Yuwen Network Technology Co., Ltd. shows 1 grants in 2022–2024 against only 5 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 Changsha's volume?

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

patents

What this shows Changsha holds 6 patents at rank #39,353, 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 Changsha

By rank, the assignees closest to #39,353 in granted patent volume.

Leaders in A61J (Containers Specially Adapted FOR Medical OR Pharmaceutica…)

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

Changsha's Innovation Score vs. every tracked assignee

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

14 3rd percentile higher than 3% 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

0123456 20212022 1
USPTO utility patent grants by year · 2021–2022

Grants by year

Teal-shaded recent years (2020–present) versus the 2021–2019 baseline. Full figures in the table below.

View data table
Changsha Yuwen Network Technology Co., Ltd. patent grants by year, 2015–2025
Year Patents Granted Share of Period
2021 5 83.3%
2022 1 16.7%

Which technologies does Changsha Yuwen Network Technology Co., Ltd. patent most?

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

Changsha Yuwen Network Technology Co., Ltd.'s patent record in context - here's where to go next.

  • Changsha Yuwen Network Technology Co., Ltd.'s lead technology class is A61J (Containers Specially Adapted FOR Medical OR Pharmaceutical PURPOSES; Devices OR Methods Specially Adapted FOR Bringing Pharmaceutical Products Into Particular Physical OR Administering FORMS; Devices ), 16.7% of its portfolio - see every assignee active in that class. Explore A61J
  • Ranked #39,409 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
  • Compare Changsha Yuwen Network Technology Co., Ltd. against CH Biomedical (USA) Inc., an assignee filing at a similar volume. Compare portfolios
  • Innovation Score of 14.1/100 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.