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CPC technology class · C10

C10F - Drying Or Working-up Of Peat

Drying or working-up of peat. 12 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

12
US patents granted
#9/10
in C10
0.0%
C10 class share
-78%
5-yr velocity

The verdict

According to USPTO PatentsView, Drying Or Working-up Of Peat ranks #657 of 670 CPC technology areas - 12 US patents granted since 2015, with recorded grant volume down 78% over five years.

#657
of 670 CPC technology areas
12
US patents granted, 2015–2025
Kyushu Electric Power
leading assignee (3)
-78%
grant velocity, last 5 yrs

How tightly C10F concentrates

Kyushu Electric Power Co., Inc. holds 25.0% of C10F's recorded grants (3 of 12) - 1 more than Ecogensus LLC. Across complete PatentsView years, the class peaked in 2018 at 3 grants and bottomed in 2015 at 1 (+200% peak-over-trough). Equal-window velocity 2020–2024 vs 2015–2019: -78% (2 vs 9 grants).

Leaderboard read

C10F concentration, lead at 25.0%

Kyushu Electric Power Co., Inc. leads this historical grant record at 25.0% of C10F - foreign corporation assignees hold 50% of class grants (3 of 6). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share
25.0%

3 of 12 grants

Top three share
50.0%

of the class's recorded grants

Lead over #2
1

more grants than Ecogensus LLC

Where C10F sits inside C10

Among 10 subclasses in C10 (Petroleum, GAS OR Coke INDUSTRIES; Technical Gases Containing Carbon MONOXIDE; FUELS; LUBRICANTS; Peat), C10F ranks #9 and holds 0.0% of the parent class's 27,322 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

C10G 9,942 C10L 5,025 C10M 4,240 C10N 3,834 C10B 1,527 C10J 1,392 C10K 1,080 C10C 264

C10F grants by year, peak 2018 (3)

US utility-patent grants per year in C10F, 2015–2025 - recent five years are down 78% versus 2015–2019.

0.511.522.533.5 201520162017201820192022 2

Who leads C10F?

The 12 most active assignees in Drying OR Working-up OF Peat - wider bars mean more grants

patents

What this shows Kyushu Electric Power is the most active filer in C10F, holding 3 of the 12 patents in this class. Concentration at the top signals how contestable this technology area is for new entrants.

Source USPTO PatentsView, granted utility patents As of 2015–2025 grant years
View data table
Top patent holders in CPC subclass C10F
Rank Company Patents in C10F
#1 Kyushu Electric Power Co., Inc. 3
#2 Ecogensus LLC 2
#3 American Peat Technology, LLC 1

Questions about C10F

Which company holds the most patents in C10F?
Kyushu Electric Power Co., Inc. leads C10F with 3 patents (25.0% of the subclass). By PatentsView assignee type, foreign corporations account for 50% of class grants.
How does C10F compare inside parent class C10?
Inside C10 (Petroleum, GAS OR Coke INDUSTRIES; Technical Gases Containing Carbon MONOXIDE; FUELS; LUBRICANTS; Peat), C10F ranks #9 of 10 subclasses by grant volume and holds 0.0% of the parent class total. The largest sibling is C10G (9,942 grants).

What to do with this data

C10F in context - here's where to go next.

  • Kyushu Electric Power Co., Inc. leads C10F with 3 grants in this class. See full portfolio
  • C10F ranks #657 of 670 by grant volume among all tracked CPC technology areas. See the ranking
  • Inside parent class C10, the largest sibling subclass is C10G with 9,942 grants. Explore C10G

Figures reflect USPTO PatentsView grant data through 2026-05-15; pending applications not yet granted are not counted.

Methodology - C10F figures are USPTO PatentsView granted-utility totals for this subclass (12 grants in the tracked window).

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.