CPC technology class · C05

C05F - Organic Fertilisers NOT Covered BY Subclasses C05B

Organic fertilisers not covered by subclasses c05b, c05c, e.g. fertilisers from waste or refuse. 1,129 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

Compiled byPlainPatent Editorial, US Patent Intelligence Editorial Team · May 15, 2026

1,129
US patents granted: C05
Parent CPC class: 20
Active assignees: +47%
5-yr velocity

The verdict

Organic Fertilisers NOT Covered BY Subclasses C05B ranks #439 of 670 CPC technology areas - 1,129 US patents granted since 2015, with filing up 47% over five years.

#439
of 670 CPC technology areas: 1,129
US patents granted, 2015–2025: Cool Planet Energy Sy…
leading assignee (28): +47%
filing velocity, last 5 yrs

Top assignee: Cool Planet Energy System, Inc. (28 patents)

CPC subclass C05F - ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE - covers 1,129 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class C05 (FERTILISERS; MANUFACTURE THEREOF). See our CPC classification guide for how the system works.

The competitive landscape in C05F is shaped by 20 distinct companies actively filing in this space. Cool Planet Energy System, Inc. leads with 28 patents, followed by Carbon Technology Holdings, Llc at 16 grants and Novozymes Bioag A/s at 16.

Filing activity in C05F is up 47% over the past five years versus 2015-2019, a sharp acceleration suggesting an emerging or fast-moving technology area. All counts come directly from USPTO PatentsView and reflect US granted utility patents only.

Is C05F innovation accelerating?

US utility-patent grants per year in C05F, 2015–2025 - recent five years are up 47% versus 2015–2019.

Cool Planet Energy Sy…

28
Carbon Technology Hol…

16
Novozymes Bioag A/S

16
Soilgenic

13
Novozymes Biologicals

10
Pivot Bio

9
Anaergia

8
Profile Products L L C

8
Tenfold

8
Envirokure

8
Food Cycle Science

8
Amvac Chemical

7

What this shows Cool Planet Energy Sy… is the most active filer in C05F, holding 28 of the 1,129 patents in this class. Concentration at the top signals how contestable this technology area is for new entrants.

View data table

Top patent holders in CPC subclass C05F
Rank	Company	Patents in C05F
#1	Cool Planet Energy System, Inc.	28
#2	Carbon Technology Holdings, Llc	16
#3	Novozymes Bioag A/s	16
#4	Soilgenic Technologies, Llc	13
#5	Novozymes Biologicals Limited	10
#6	Pivot Bio, Inc.	9
#7	Anaergia Inc.	8
#8	Profile Products L.l.c.	8
#9	Tenfold Technologies, Llc	8
#10	Envirokure Inc.	8
#11	Food Cycle Science Corporation	8
#12	Amvac Chemical Corporation	7
#13	Innovations FOR World Nutrition, Llc	7
#14	Heliae Development, Llc	6
#15	Dari-tech, Inc.	6
#16	The Andersons Inc.	6
#17	LSC Environmental Products, Llc	6
#18	Anuvia Plant Nutrients Corporation	6
#19	Nachurs Alpine Solutions, Corp.	6
#20	Talipot Cool Extract (ip), Llc	6

About This Class

CPC subclass C05F belongs to class C05.

1,129 patents were granted in this class between 2015 and 2025.

20 companies actively patent in this space.

Classification System

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

← All Technology Classes Technology Rankings →

Footprint here vs. claim strategy

Each dot is a leading C05F assignee, placed by how many patents it holds in this class (horizontal) against its company-wide average claims per patent (vertical) - a read on whether the class is led by broad-but-shallow filers or focused deep-claim players.

Top 14 C05F assignees by class footprint. Bubble size = patents in C05F. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class C05F?

CPC subclass C05F covers ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE. It belongs to CPC class C05 (FERTILISERS; MANUFACTURE THEREOF), with 1,129 US utility patents granted since 2015.

How many patents have been filed in C05F?

1,129 US utility patents were granted in CPC subclass C05F between 2015 and 2025, based on USPTO PatentsView data.

Which company holds the most patents in C05F?

Cool Planet Energy System, Inc. leads C05F with 28 patents, making it the most active assignee in this technology area.

How is patent data for C05F 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., C05) is a broad technology category. Subclasses like C05F 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.