PlainPatent
USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Chang YOW Technologies International Co., Ltd.

USPTO PatentsView assignee record - 5 granted patents across 5 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: A63B (Apparatus FOR Physical Training, Gymnastics, Swimming, Climbing, OR FENCING; Ball GAMES; Training Equipment).

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The verdict

According to USPTO PatentsView, Chang ranks #45,591 of 49,997 tracked US assignees by granted-patent volume, with 5 patents across 5 technology areas.

#45,591
of 49,997 US assignees by volume
27th percentile
by Innovation Score (28.3/100)
7.0
avg claims per patent

USPTO PatentsView assignee plate

Corpus R45591 · Foreign Corporation #45,591 · 5 grants

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

  • GRANTS-MICRO 5 grants
  • BOTTOM-DECILE #45,591/49,997
  • PHOTO-FINISH Chain Reaction
  • CPC-NARROW A63B · 5 areas
  • INNOV-THIN 28.3/100
  • CLAIMS-SPARSE 7.0 claims/avg
  • TYPE-FRNCORP Foreign Corp
  • SPAN-YRS 2021–2022 · 2y
  • BOOK-RICH 9/10 fields

Nearest grant-volume peer: Chain Reaction 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 Chang’s 28.3 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 Chang

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

score

What this shows Chang's Innovation Score is 28.3/100 (27th 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 Chang?

Each dot is one of Chang’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). Chang’s own 7.0 claims/patent is at or below the 10.6 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

Chang 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 4.95.05.055.05.05.1 51015202530 Granted patents (volume) Avg claims / patent Chain Reaction Ltd. - 5, 28Chain ReactionChampion Trust LLC - 5, 12.8Champion TrustChamptek Incorporated - 5, 10.6Champtek Incorpor…Chandlertec Inc. - 5, 16.4ChandlertecChanging International Company Limited - 5, 8.6Changing Internat…Changjiang Survey Planning Design AND Research Co., Ltd. - 5, 10.6Changjiang Survey…Changzheng Engineering Co., Ltd. - 5, 13.2Changzheng Engine…Changzhou Kaisen Photoelectricity Co., Ltd. - 5, 6.2Changzhou Kaisen…Chang YOW Technologies International Co., Ltd. - 5, 7Chang YOW Interna…
Chang vs its 8 nearest volume peers: granted patents vs average claims per patent. Source: USPTO PatentsView.

Where Chang's grants concentrate

Chang YOW Technologies International Co., Ltd. is a focused PatentsView assignee: 5 CPC subclasses with 100% of grants classified under A63B (Apparatus FOR Physical Training, Gymnastics, Swimming, Climbing, OR FENCING; Ball GAMES; Training Equipment). Peak complete grant year is 2022 (3 grants) versus a trough of 2 in 2021. By volume, Chang sits between Chain Reaction Ltd. and Changzhou Kaisen Photoelectricity Co., Ltd..

Chang's three-year grant acceleration

Chang YOW Technologies International Co., Ltd. shows 3 grants in 2022–2024 against only 2 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 Chang's volume?

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

patents

What this shows Chang holds 5 patents at rank #45,501, 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 Chang

By rank, the assignees closest to #45,501 in granted patent volume.

Leaders in A63B (Apparatus FOR Physical Training)

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

Chang's Innovation Score vs. every tracked assignee

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

28 27th percentile higher than 27% 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

1.522.533.5 20212022 3
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
Chang YOW Technologies International Co., Ltd. patent grants by year, 2015–2025
Year Patents Granted Share of Period
2021 2 40.0%
2022 3 60.0%

Which technologies does Chang YOW Technologies International Co., Ltd. patent most?

Top 5 of 5 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

Chang YOW Technologies International Co., Ltd.'s patent record in context - here's where to go next.

  • Chang YOW Technologies International Co., Ltd.'s lead technology class is A63B (Apparatus FOR Physical Training, Gymnastics, Swimming, Climbing, OR FENCING; Ball GAMES; Training Equipment), 100% of its portfolio - see every assignee active in that class. Explore A63B
  • Ranked #45,591 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
  • Compare Chang YOW Technologies International Co., Ltd. against Chain Reaction Ltd., an assignee filing at a similar volume. Compare portfolios
  • Innovation Score of 28.3/100 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.