Where does Chang Yang Material Corp. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Chang Yang Material Corp. ranks #39,405 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 Yang Material Corp. hold?

Chang Yang Material Corp. holds 6 US utility patents granted between 2021 and 2024, spanning 9 technology areas.

What is Chang Yang Material Corp.'s Innovation Score?

Chang Yang Material Corp. has an Innovation Score of 43.2 out of 100 (top 29% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

What technology areas does Chang Yang Material Corp. focus on?

Chang Yang Material Corp.'s top technology area is A45C (PURSES; LUGGAGE; Hand Carried Bags) with 2 patents, ranking #171 of 494 assignees active in that subclass. Grants appear in 9 CPC subclasses total.

Is Chang Yang Material Corp.'s patent grant rate increasing or decreasing?

Insufficient historical data is available to calculate a velocity trend for Chang Yang Material Corp..

What does claim depth mean for Chang Yang Material Corp.'s patents?

Chang Yang Material Corp.'s patents average 9.8 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 Chang Yang Material Corp. 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

Chang Yang Material Corp.

USPTO PatentsView assignee record - 6 granted patents across 9 technology areas, recorded in grant years 2021–2024. 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: A45C (PURSES; LUGGAGE; Hand Carried Bags).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Chang ranks #39,405 of 49,997 tracked US assignees by granted-patent volume, with 6 patents across 9 technology areas.

#39,405
of 49,997 US assignees by volume: Top 29%
by Innovation Score (43.2/100): 9.8
avg claims per patent

USPTO PatentsView assignee plate

Corpus R39405 · Foreign Corporation #39,405 · 6 grants

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

GRANTS-MICRO 6 grants
LOWER-Q #39,405/49,997
PHOTO-FINISH CGS Group
CPC-NARROW A45C · 9 areas
INNOV-PAR 43.2/100
CLAIMS-PAR 9.8 claims/avg
TYPE-FRNCORP Foreign Corp
SPAN-YRS 2021–2024 · 4y
BOOK-RICH 9/10 fields

Nearest grant-volume peer: CGS Group, LLC (±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 43.2 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 6.7 pts (16%) Velocity 20.0 pts (46%) Breadth 10.6 pts (25%) Claim depth 5.9 pts (14%)

Qualcomm Incorporated · highest

85
Chang Yang Material · this assignee

43
3D Lighting… · lowest

7

What this shows Chang's Innovation Score is 43.2/100 (top 29% 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 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 9.8 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.

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

Where Chang's grants concentrate

Chang Yang Material Corp. is a focused PatentsView assignee: 9 CPC subclasses with 33.3% of grants classified under A45C (PURSES; LUGGAGE; Hand Carried Bags). Peak complete grant year is 2022 (3 grants) versus a trough of 1 in 2021. By volume, Chang sits between CGS Group, LLC and Channel Master, LLC.

Chang's three-year grant acceleration

Chang Yang Material Corp. shows 5 grants in 2022–2024 against only 1 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.

CGS Group

6
CGS Technology

6
CH Biomedical (US…

6
Chambio

6
Changhua Christia…

6
Changsha Yuwen Ne…

6
Changzhou Sunwood…

6
Channel Master

6
Chang Yang Materi… ◀

6

What this shows Chang holds 6 patents at rank #39,351, 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 #39,351 in granted patent volume.

Leaders in A45C (Purses)

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)

43 Top 29% higher than 71% 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 · 2021–2024

Grants by year

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

View data table

Chang Yang Material Corp. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2021	1	16.7%
2022	3	50.0%
2023	1	16.7%
2024	1	16.7%

Which technologies does Chang Yang Material Corp. patent most?

A45C - PURSES; LUGGAGE; Hand Carried Bags 2

B65D - Containers FOR Storage OR Transport OF Articles OR Materials, e.g. Bags, Barrels, Bottles, Boxes, Cans, Cartons, Crates, Drums, Jars, Tanks, Hoppers, Forwarding CONTAINERS; Accessories, Closures, OR Fittings THEREFOR; Packaging ELEMENTS; Packages 2

B29D - Producing Particular Articles From Plastics OR From Substances IN A Plastic State 1

B29C - Shaping OR Joining OF PLASTICS; Shaping OF Material IN A Plastic State, NOT Otherwise Provided FOR; After-treatment OF THE Shaped Products, e.g. Repairing 1

F16B - Devices FOR Fastening OR Securing Constructional Elements OR Machine Parts Together, e.g. Nails, Bolts, Circlips, Clamps, Clips OR WEDGES; Joints OR Jointing 1

A47G - Household OR Table Equipment 1

B60B - Vehicle Wheels ; CASTORS; Axles FOR Wheels OR CASTORS; Increasing Wheel Adhesion 1

A47J - Kitchen EQUIPMENT; Coffee MILLS; Spice MILLS; Apparatus FOR Making Beverages 1

A01K - Animal HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; Rearing OR Breeding Animals, NOT Otherwise Provided FOR; NEW Breeds OF Animals 1

Top 9 of 9 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 Yang Material Corp.'s patent record in context - here's where to go next.

Chang Yang Material Corp.'s lead technology class is A45C (PURSES; LUGGAGE; Hand Carried Bags), 33.3% of its portfolio - see every assignee active in that class. Explore A45C
Ranked #39,405 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Chang Yang Material Corp. against CGS Group, LLC, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 43.2/100 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.