Where does Chang YOW Technologies International Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Chang YOW Technologies International Co., Ltd. ranks #45,591 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 Chang YOW Technologies International Co., Ltd. hold?

Chang YOW Technologies International Co., Ltd. holds 5 US utility patents granted between 2021 and 2022, spanning 5 technology areas.

What is Chang YOW Technologies International Co., Ltd.'s Innovation Score?

Chang YOW Technologies International Co., Ltd. has an Innovation Score of 28.3 out of 100 (27th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Chang YOW Technologies International Co., Ltd.'s patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Chang YOW Technologies International Co., Ltd..

What does claim depth mean for Chang YOW Technologies International Co., Ltd.'s patents?

Chang YOW Technologies International Co., Ltd.'s patents average 7.0 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.

USPTO 2015–2025 USPTO PatentsView Foreign Corporation

Chang YOW Technologies International Co., Ltd.

Q: What technology areas does Chang YOW Technologies International Co., Ltd. focus on?

Chang YOW Technologies International Co., Ltd.'s top technology area is A63B (Apparatus FOR Physical Training, Gymnastics, Swimming, Climbing, OR FENCING; Ball GAMES; Training Equipment) with 5 patents. Grants appear in 5 CPC subclasses total.

Q: How is the Chang YOW Technologies International 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 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).

Compiled by PlainPatent · May 15, 2026

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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.

Qualcomm Incorporated · highest

85
Chang YOW Internatio… · this assignee

28
3D Lighting… · lowest

7

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.

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.

Chain Reaction

5
Champion Trust

5
Champtek Incorpor…

5
Chandlertec

5
Changing Internat…

5
Changjiang Survey…

5
Changzheng Engine…

5
Changzhou Kaisen…

5
Chang YOW Interna… ◀

5

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.

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

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 · 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?

A63B - Apparatus FOR Physical Training, Gymnastics, Swimming, Climbing, OR FENCING; Ball GAMES; Training Equipment 5

B62M - Rider Propulsion OF Wheeled Vehicles OR SLEDGES; Powered Propulsion OF Sledges OR ; SINGLE-TRACK; CYCLES; Transmissions Specially Adapted FOR Such Vehicles 1

H02K - Dynamo-electric Machines 1

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 1

F16M - Frames, Casings OR Beds OF Engines, Machines OR Apparatus, NOT Specific TO Engines, Machines OR Apparatus Provided FOR ELSEWHERE; STANDS; Supports 1

Top 5 of 5 technology areas

Where it ranks

Overall rank by patents

#45,591

of 49,997 tracked assignees

Innovation Score

28.3 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

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

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.