PlainPatent

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 filing trajectory.

12
US patents granted
C10
Parent CPC class
3
Active assignees
-78%
5-yr velocity

The verdict

Drying OR Working-up OF PEAT ranks #657 of 670 CPC technology areas - 12 US patents granted since 2015, with filing down 78% over five years.

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

CPC subclass C10F - DRYING OR WORKING-UP OF PEAT - covers 12 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class C10 (PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT). See our CPC classification guide for how the system works.

The competitive landscape in C10F is shaped by 3 distinct companies actively filing in this space. Kyushu Electric Power Co., Inc. leads with 3 patents, followed by Ecogensus Llc at 2 grants and American Peat Technology, Llc at 1.

Filing activity in C10F is down 78% over the past five years versus 2015-2019, a notable slowdown that may signal a maturing field. All counts come directly from USPTO PatentsView and reflect US granted utility patents only.

Is C10F innovation accelerating?

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

About This Class

CPC subclass C10F belongs to class C10.

12 patents were granted in this class between 2015 and 2025.

3 companies actively patent in this space.

Classification System

Cooperative Patent Classification (CPC) is a hierarchical patent classification system used by the USPTO and EPO.

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Frequently Asked Questions

What is CPC class C10F?
CPC subclass C10F covers DRYING OR WORKING-UP OF PEAT. It belongs to CPC class C10 (PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT), with 12 US utility patents granted since 2015.
How many patents have been filed in C10F?
12 US utility patents were granted in CPC subclass C10F between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in C10F?
Kyushu Electric Power Co., Inc. leads C10F with 3 patents, making it the most active assignee in this technology area.
How is patent data for C10F collected?
Patent data comes from USPTO PatentsView, a public research dataset maintained by the United States Patent and Trademark Office. It covers all US granted utility patents and assigns CPC codes based on the technology described in each patent.
What is the difference between CPC class and subclass?
A CPC class (e.g., C10) is a broad technology category. Subclasses like C10F provide finer granularity within that category. PlainPatent organizes data at the subclass level (4-character codes) for the most useful view of technology domains.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent Editorial

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.