Where does Dongfang Electric Corporation rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), Dongfang Electric Corporation ranks #46,222 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 Dongfang Electric Corporation hold?

Dongfang Electric Corporation holds 5 US utility patents granted between 2017 and 2018, spanning 6 technology areas.

What is Dongfang Electric Corporation's Innovation Score?

Dongfang Electric Corporation has an Innovation Score of 22.5 out of 100 (10th percentile of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is Dongfang Electric Corporation's patent grant rate increasing or decreasing?

Dongfang Electric Corporation's recent grant velocity is -100% compared to the prior five-year period (grant years, not application filing dates). Grant activity has slowed relative to earlier years.

What does claim depth mean for Dongfang Electric Corporation's patents?

Dongfang Electric Corporation's patents average 12.8 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 Dongfang Electric Corporation 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

Dongfang Electric Corporation

Q: What technology areas does Dongfang Electric Corporation focus on?

Dongfang Electric Corporation's top technology area is F23C (Methods OR Apparatus FOR Combustion Using Fluid Fuel OR Solid Fuel Suspended IN ; A Carrier GAS OR; AIR) with 3 patents, ranking #60 of 178 assignees active in that subclass. Grants appear in 6 CPC subclasses total.

USPTO PatentsView assignee record - 5 granted patents across 6 technology areas, recorded in grant years 2017–2018. 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: F23C (Methods OR Apparatus FOR Combustion Using Fluid Fuel OR Solid Fuel Suspended IN ; A Carrier GAS OR; AIR).

Compiled by PlainPatent · May 15, 2026

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Explore the portfolio See the ranking

The verdict

According to USPTO PatentsView, Dongfang ranks #46,222 of 49,997 tracked US assignees by granted-patent volume, with 5 patents across 6 technology areas.

#46,222
of 49,997 US assignees by volume: 10th percentile
by Innovation Score (22.5/100): 12.8
avg claims per patent: -100%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R46222 · Foreign Corporation #46,222 · 5 grants

GRANTS-MICRO · BOTTOM-DECILE · PHOTO-FINISH · CPC-NARROW · INNOV-THIN · CLAIMS-RICH · TYPE-FRNCORP · VEL-DROP · BOOK-FULL

GRANTS-MICRO 5 grants
BOTTOM-DECILE #46,222/49,997
PHOTO-FINISH Donesta Bioscience B V
CPC-NARROW F23C · 6 areas
INNOV-THIN 22.5/100
CLAIMS-RICH 12.8 claims/avg
TYPE-FRNCORP Foreign Corp
VEL-DROP -100% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Donesta Bioscience B.V. (±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 Dongfang’s 22.5 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 6.2 pts (27%) Velocity 0.0 pts (0%) Breadth 8.7 pts (38%) Claim depth 7.7 pts (34%)

Qualcomm Incorporated · highest

85
Dongfang Electric · this assignee

23
3D Lighting… · lowest

7

What this shows Dongfang's Innovation Score is 22.5/100 (10th 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 Dongfang?

Each dot is one of Dongfang’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). Dongfang’s own 12.8 claims/patent is ABOVE the 4.8 median for these volume peers. More thorough claims than most filers at this scale, not just more of them.

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

Where Dongfang's grants concentrate

Dongfang Electric Corporation is a focused PatentsView assignee: 6 CPC subclasses with 60% of grants classified under F23C (Methods OR Apparatus FOR Combustion Using Fluid Fuel OR Solid Fuel Suspended IN ; A Carrier GAS OR; AIR). Peak complete grant year is 2018 (3 grants) versus a trough of 2 in 2017. By volume, Dongfang sits between Donesta Bioscience B.V. and Dongguan Frontier Technology Institute.

Donesta Bioscienc…

5
Dong Yang INK

5
Dong-a Flexible M…

5
Dong-a Teaching M…

5
Dongguan Boyi Fur…

5
Dongguan City Min…

5
Dongguan DSP Tech…

5
Dongguan Frontier…

5
Dongfang Electric ◀

5

What this shows Dongfang holds 5 patents at rank #46,122, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near Dongfang

By rank, the assignees closest to #46,122 in granted patent volume.

Leaders in F23C (Methods OR Apparatus FOR Combustion Using Fluid Fuel OR S…)

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

Dongfang's Innovation Score vs. every tracked assignee

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

23 10th percentile higher than 10% 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 · 2017–2018

Grants by year

Teal-shaded recent years (2020–present) versus the 2017–2019 baseline. Full figures in the table below.

View data table

Dongfang Electric Corporation patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2017	2	40.0%
2018	3	60.0%

Which technologies does Dongfang Electric Corporation patent most?

F23C - Methods OR Apparatus FOR Combustion Using Fluid Fuel OR Solid Fuel Suspended IN ; A Carrier GAS OR; AIR 3

F23J - Removal OR Treatment OF Combustion Products OR Combustion RESIDUES; Flues 3

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 2

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 2

F22B - Methods OF Steam GENERATION; Steam Boilers 1

F23K - Feeding Fuel TO Combustion Apparatus 1

Top 6 of 6 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

Dongfang Electric Corporation's patent record in context - here's where to go next.

Dongfang Electric Corporation's lead technology class is F23C (Methods OR Apparatus FOR Combustion Using Fluid Fuel OR Solid Fuel Suspended IN ; A Carrier GAS OR; AIR), 60% of its portfolio - see every assignee active in that class. Explore F23C
Ranked #46,222 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare Dongfang Electric Corporation against Donesta Bioscience B.V., an assignee filing at a similar volume. Compare portfolios
Innovation Score of 22.5/100 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.