CPC technology class · C05

C05C - Nitrogenous Fertilisers

Nitrogenous fertilisers. 753 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

Compiled by PlainPatent · May 15, 2026

753
US patents granted: #3/5
in C05: 17.4%
C05 class share: +25%
5-yr velocity

The verdict

According to USPTO PatentsView, Nitrogenous Fertilisers ranks #489 of 670 CPC technology areas - 753 US patents granted since 2015, with recorded grant volume up 25% over five years.

#489
of 670 CPC technology areas: 753
US patents granted, 2015–2025: Koch Agronomic Services
leading assignee (29): +25%
grant velocity, last 5 yrs

How C05C's grant cadence moved

Between 2020–2024, C05C recorded 364 grants versus 291 in 2015–2019 (+25% equal-window velocity). Across complete years, output peaked in 2020 at 88 grants and bottomed in 2015 at 45 (+96% peak-over-trough). Lead assignee Koch Agronomic Services, LLC holds 3.9% of the class ; the top three share 10.2%.

Leaderboard read

C05C concentration, lead at 3.9%

Koch Agronomic Services, LLC leads this historical grant record at 3.9% of C05C - us corporation assignees hold 61% of class grants (217 of 356). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share: 3.9%
Top three share: 10.2%
Lead over #2: 1

Where C05C sits inside C05

Among 5 subclasses in C05 (FERTILISERS; Manufacture Thereof), C05C ranks #3 and holds 17.4% of the parent class's 4,334 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

C05G 1,232 C05F 1,129 C05D 707 C05B 513

Rising assignees active in C05C

Company-wide grant multiples (2022–2024 vs 2019–2021) among assignees with ≥5 patents in this subclass. Growth is company-wide; class patent counts are subclass-specific.

#1 Soilgenic Technologies, LLC 14x 0 → 14 company-wide · 20 in C05C
#2 Sabic Agri-nutrients Company 4.00x 0 → 4 company-wide · 8 in C05C
#3 Carbon Technology Holdings, LLC 2.33x 12 → 28 company-wide · 7 in C05C
#4 Bayotech, Inc. 2.20x 5 → 11 company-wide · 5 in C05C
#5 North University OF China 2.08x 12 → 25 company-wide · 5 in C05C

C05C grants by year, peak 2020 (88)

US utility-patent grants per year in C05C, 2015–2025 - recent five years are up 25% versus 2015–2019.

Koch Agronomic…

29
Yara International Asa

28
Soilgenic

20
Stamicarbon B V

19
Verdesian Life…

16
The Mosaic

10
Oms Investments

9
Casale

8
Earth Science…

8
Sabic Agri-nutrients

8
Carbon Technology…

7
Cool Planet Energy…

7

What this shows Koch Agronomic… is the most active filer in C05C, holding 29 of the 753 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 C05C
Rank	Company	Patents in C05C
#1	Koch Agronomic Services, LLC	29
#2	Yara International ASA	28
#3	Soilgenic Technologies, LLC	20
#4	Stamicarbon B.V.	19
#5	Verdesian Life Sciences U.S., LLC	16
#6	The Mosaic Company	10
#7	OMS Investments, Inc.	9
#8	Casale SA	8
#9	Earth Science Laboratories, Inc.	8
#10	Sabic Agri-nutrients Company	8
#11	Carbon Technology Holdings, LLC	7
#12	Cool Planet Energy System, Inc.	7
#13	Pivot Bio, Inc.	7
#14	thyssenkrupp Fertilizer Technology GmbH	7
#15	Nuorganics LLC	6
#16	Anuvia Plant Nutrients Corporation	6
#17	North University OF China	5
#18	Alcoa USA Corp.	5
#19	Bayotech, Inc.	5
#20	The Andersons Inc.	5

Footprint here vs. claim strategy

Each dot is a leading C05C 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 C05C assignees by class footprint. Bubble size = patents in C05C. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Classes near C05C's 753-grant footprint

Nationwide nearest neighbors for C05C (#489 of 670 by volume ; lead share 3.9%) - not the C05 parent-class siblings above.

Nearest by grant volume

C25C 753 C13K 754 F01B 754 F23K 754

Nearest by lead-assignee share

A42B 3.8% B67D 3.9% G01P 3.9% F41C 3.9%

Questions about C05C

Which company holds the most patents in C05C?

Koch Agronomic Services, LLC leads C05C with 29 patents (3.9% of the subclass). By PatentsView assignee type, us corporations account for 61% of class grants.

Which C05C assignees grew fastest recently?

Among assignees with ≥5 grants in C05C, Soilgenic Technologies, LLC shows the highest company-wide grant multiple (14x: 0 grants in 2019–2021 → 14 in 2022–2024) while holding 20 patents in this subclass. Growth is company-wide, not class-only.

How does C05C compare inside parent class C05?

Inside C05 (FERTILISERS; Manufacture Thereof), C05C ranks #3 of 5 subclasses by grant volume and holds 17.4% of the parent class total. The largest sibling is C05G (1,232 grants).

What to do with this data

C05C in context - here's where to go next.

Koch Agronomic Services, LLC leads C05C with 29 grants in this class. See full portfolio
C05C ranks #489 of 670 by grant volume among all tracked CPC technology areas. See the ranking
Inside parent class C05, the largest sibling subclass is C05G with 1,232 grants. Explore C05G

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

Methodology - C05C figures are USPTO PatentsView granted-utility totals for this subclass (753 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.