PlainPatent

CPC technology class · C05

C05B - Phosphatic Fertilisers

Phosphatic fertilisers. 513 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

513
US patents granted
C05
Parent CPC class
20
Active assignees
-5%
5-yr velocity

The verdict

Phosphatic Fertilisers ranks #539 of 670 CPC technology areas - 513 US patents granted since 2015, with filing down 5% over five years.

#539
of 670 CPC technology areas
513
US patents granted, 2015–2025
The Mosaic
leading assignee (19)
-5%
filing velocity, last 5 yrs
Top assignee: The Mosaic Company (19 patents)

CPC subclass C05B - PHOSPHATIC FERTILISERS - covers 513 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 C05B is shaped by 20 distinct companies actively filing in this space. The Mosaic Company leads with 19 patents, followed by Verdesian Life Sciences U.s., Llc at 13 grants and Soilgenic Technologies, Llc at 9.

Filing activity in C05B is down 5% over the past five years versus 2015-2019, a relatively steady filing pace. All counts come directly from USPTO PatentsView and reflect US granted utility patents only.

Is C05B innovation accelerating?

US utility-patent grants per year in C05B, 2015–2025 - recent five years are down 5% versus 2015–2019.

203040506070 20152016201720182019202020212022202320242025 37

Who leads C05B?

The 12 most active assignees in PHOSPHATIC FERTILISERS - wider bars mean more grants

patents

What this shows The Mosaic is the most active filer in C05B, holding 19 of the 513 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 C05B
Rank Company Patents in C05B
#1 The Mosaic Company 19
#2 Verdesian Life Sciences U.s., Llc 13
#3 Soilgenic Technologies, Llc 9
#4 YARA International ASA 7
#5 Carbon Technology Holdings, Llc 7
#6 Cool Planet Energy System, Inc. 7
#7 Novozymes Biologicals Limited 7
#8 KOCH Agronomic Services, Llc 6
#9 Harsco Corporation 6
#10 Agtec Innovations, Inc. 6
#11 Novozymes Bioag A/s 5
#12 NIHA Corp 5
#13 Plant Food Systems, Inc. 5
#14 HGCI, Inc. 4
#15 North University OF China 4
#16 The Andersons Inc. 4
#17 Compass Minerais Manitoba Inc. 4
#18 Envirokure Inc. 4
#19 Anuvia Plant Nutrients Corporation 4
#20 BFP Management, Llc 4

About This Class

CPC subclass C05B belongs to class C05.

513 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 C05B 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 C05B assignees by class footprint. Bubble size = patents in C05B. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 C05B assignees by class footprint. Bubble size = patents in C05B. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 051015202530 05101520 Patents in C05B Avg claims / patent (company-wide) The MosaicVerdesian Life Scienc…SoilgenicYara International AsaCarbon Technology Hol…Cool Planet Energy Sy…Novozymes BiologicalsKoch Agronomic Servic…HarscoAgtec InnovationsNovozymes Bioag A/SNihaPlant Food SystemsHgci
Top 14 C05B assignees by class footprint. Bubble size = patents in C05B. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class C05B?
CPC subclass C05B covers PHOSPHATIC FERTILISERS. It belongs to CPC class C05 (FERTILISERS; MANUFACTURE THEREOF), with 513 US utility patents granted since 2015.
How many patents have been filed in C05B?
513 US utility patents were granted in CPC subclass C05B between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in C05B?
The Mosaic Company leads C05B with 19 patents, making it the most active assignee in this technology area.
How is patent data for C05B 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 C05B 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.