Where does Dong Yang Piston Co., Ltd. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Dong Yang Piston Co., Ltd. ranks #31,430 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 Dong Yang Piston Co., Ltd. hold?

Dong Yang Piston Co., Ltd. holds 8 US utility patents granted between 2016 and 2025, spanning 12 technology areas.

What is Dong Yang Piston Co., Ltd.'s Innovation Score?

Dong Yang Piston Co., Ltd. has an Innovation Score of 26.1 out of 100 (19th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Dong Yang Piston Co., Ltd.'s patent grant rate increasing or decreasing?

Dong Yang Piston Co., Ltd.'s recent grant velocity is +33% compared to the prior five-year period (grant years, not application filing dates). The company is maintaining or growing its granted-patent output.

What does claim depth mean for Dong Yang Piston Co., Ltd.'s patents?

Dong Yang Piston Co., Ltd.'s patents average 10.5 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 Dong Yang Piston 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 2015–2025 USPTO PatentsView Foreign Corporation

Dong Yang Piston Co., Ltd.

Q: What technology areas does Dong Yang Piston Co., Ltd. focus on?

Dong Yang Piston Co., Ltd.'s top technology area is F02F (Cylinders, Pistons OR Casings, FOR Combustion ENGINES; Arrangements OF Sealings IN Combustion Engines) with 6 patents, ranking #39 of 151 assignees active in that subclass. Grants appear in 12 CPC subclasses total.

USPTO PatentsView assignee record - 8 granted patents across 12 technology areas, recorded in grant years 2016–2025. 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: F02F (Cylinders, Pistons OR Casings, FOR Combustion ENGINES; Arrangements OF Sealings IN Combustion Engines).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Dong ranks #31,430 of 49,997 tracked US assignees by granted-patent volume, with 8 patents across 12 technology areas.

#31,430
of 49,997 US assignees by volume: 19th percentile
by Innovation Score (26.1/100): 10.5
avg claims per patent: +33%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R31430 · Foreign Corporation #31,430 · 8 grants

GRANTS-MICRO · MID-PACK · PHOTO-FINISH · CPC-FOCUS · INNOV-THIN · CLAIMS-PAR · TYPE-FRNCORP · VEL-UP · BOOK-FULL

GRANTS-MICRO 8 grants
MID-PACK #31,430/49,997
PHOTO-FINISH DNA Script SAS
CPC-FOCUS F02F · 12 areas
INNOV-THIN 26.1/100
CLAIMS-PAR 10.5 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-UP +33% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: DNA Script SAS (±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 Dong’s 26.1 Innovation Score adds up

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

Volume 7.6 pts (29%) Velocity 0.0 pts (0%) Breadth 12.2 pts (47%) Claim depth 6.3 pts (24%)

Qualcomm Incorporated · highest

85
Dong Yang Piston · this assignee

26
3D Lighting… · lowest

7

What this shows Dong's Innovation Score is 26.1/100 (19th 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.

Does more volume mean deeper claims for Dong?

Each dot is one of Dong’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). Dong’s own 10.5 claims/patent is at or below the 12.1 median for these volume peers. Volume here does not track with deeper claims; several lower-volume peers claim more thoroughly per patent.

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

Where Dong's grants concentrate

Dong Yang Piston Co., Ltd. is a focused PatentsView assignee: 12 CPC subclasses with 75% of grants classified under F02F (Cylinders, Pistons OR Casings, FOR Combustion ENGINES; Arrangements OF Sealings IN Combustion Engines). Peak complete grant year is 2020 (3 grants) versus a trough of 1 in 2016. By volume, Dong sits between DNA Script SAS and DOW Brasil Sudeste Industrial Ltda..

DNA Script SAS

8
DNT Scientific Re…

8
Dolphin Fluidics…

8
Dominion Engineer…

8
Dongguan Hongyu P…

8
Dongguan Lianrun…

8
Douxmatok

8
DOW Brasil Sudest…

8
Dong Yang Piston ◀

8

What this shows Dong holds 8 patents at rank #31,401, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Dong

By rank, the assignees closest to #31,401 in granted patent volume.

Leaders in F02F (Cylinders)

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

Dong's Innovation Score vs. every tracked assignee

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

26 19th percentile higher than 19% 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 · 2016–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2016–2019 baseline. Full figures in the table below.

View data table

Dong Yang Piston Co., Ltd. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2016	1	12.5%
2018	2	25.0%
2020	3	37.5%
2021	1	12.5%
2025partial year	1	12.5%

Which technologies does Dong Yang Piston Co., Ltd. patent most?

F02F - Cylinders, Pistons OR Casings, FOR Combustion ENGINES; Arrangements OF Sealings IN Combustion Engines 6

B22C - Foundry Moulding 3

F01P - Cooling OF Machines OR Engines IN GENERAL; Cooling OF Internal-combustion Engines 3

B23K - Soldering OR UNSOLDERING; WELDING; Cladding OR Plating BY Soldering OR WELDING; Cutting BY Applying Heat Locally, e.g. Flame CUTTING; Working BY Laser Beam 2

F16J - Pistons ; CYLINDERS; Sealings 2

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 1

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

B23P - Metal-working NOT Otherwise Provided FOR; Combined OPERATIONS; Universal Machine Tools 1

B22D - Casting OF METALS; Casting OF Other Substances BY THE Same Processes OR Devices 1

B29L - Indexing Scheme Associated With Subclass B29c, Relating TO Particular Articles 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

H05K - Printed CIRCUITS; Casings OR Constructional Details OF Electric APPARATUS; Manufacture OF Assemblages OF Electrical Components 1

Top 12 of 12 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

Dong Yang Piston Co., Ltd.'s patent record in context - here's where to go next.

Dong Yang Piston Co., Ltd.'s lead technology class is F02F (Cylinders, Pistons OR Casings, FOR Combustion ENGINES; Arrangements OF Sealings IN Combustion Engines), 75% of its portfolio - see every assignee active in that class. Explore F02F
Ranked #31,430 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Dong Yang Piston Co., Ltd. against DNA Script SAS, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 26.1/100 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

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.