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CPC technology class · C05

C05B - Phosphatic Fertilisers

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

513
US patents granted
#5/5
in C05
11.8%
C05 class share
-20%
5-yr velocity

The verdict

According to USPTO PatentsView, Phosphatic Fertilisers ranks #539 of 670 CPC technology areas - 513 US patents granted since 2015, with recorded grant volume down 20% over five years.

#539
of 670 CPC technology areas
513
US patents granted, 2015–2025
The Mosaic
leading assignee (19)
-20%
grant velocity, last 5 yrs

How C05B's grant cadence moved

Between 2020–2024, C05B recorded 205 grants versus 256 in 2015–2019 (-20% equal-window velocity). Across complete years, output peaked in 2019 at 63 grants and bottomed in 2023 at 30 (+110% peak-over-trough). Lead assignee The Mosaic Company holds 3.7% of the class ; the top three share 8.0%.

Leaderboard read

C05B concentration, lead at 3.7%

The Mosaic Company leads this historical grant record at 3.7% of C05B - us corporation assignees hold 65% of class grants (148 of 228). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share
3.7%

19 of 513 grants

Top three share
8.0%

of the class's recorded grants

Lead over #2
6

more grants than Verdesian Life Sciences U.S., LLC

Where C05B sits inside C05

Among 5 subclasses in C05 (FERTILISERS; Manufacture Thereof), C05B ranks #5 and holds 11.8% 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 C05C 753 C05D 707

Rising assignees active in C05B

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. #1 Soilgenic Technologies, LLC 14x 0 → 14 company-wide · 9 in C05B
  2. #2 Carbon Technology Holdings, LLC 2.33x 12 → 28 company-wide · 7 in C05B
  3. #3 Yara International ASA 1.43x 21 → 30 company-wide · 7 in C05B
  4. #4 Novozymes Bioag A/S 1.08x 13 → 14 company-wide · 5 in C05B
  5. #5 Niha Corp 1.00x 0 → 1 company-wide · 5 in C05B

C05B grants by year, peak 2019 (63)

US utility-patent grants per year in C05B, 2015–2025 - recent five years are down 20% 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

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). Scatter plot of 14 data points (bubble-sized by third dimension). 051015202530 05101520 Patents in C05B Avg claims / patent (company-wide) The MosaicVerdesian Life…SoilgenicYara International AsaCarbon Technology…Cool Planet Energy…Novozymes BiologicalsKoch Agronomic…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).

Classes near C05B's 513-grant footprint

Nationwide nearest neighbors for C05B (#539 of 670 by volume ; lead share 3.7%) - not the C05 parent-class siblings above.

Nearest by grant volume

B28C 511 F23Q 516 B61K 506 C12C 506

Nearest by lead-assignee share

H02K 3.7% H04R 3.7% H03K 3.7% H01H 3.7%

Questions about C05B

Which company holds the most patents in C05B?
The Mosaic Company leads C05B with 19 patents (3.7% of the subclass). By PatentsView assignee type, us corporations account for 65% of class grants.
Which C05B assignees grew fastest recently?
Among assignees with ≥5 grants in C05B, Soilgenic Technologies, LLC shows the highest company-wide grant multiple (14x: 0 grants in 2019–2021 → 14 in 2022–2024) while holding 9 patents in this subclass. Growth is company-wide, not class-only.
How does C05B compare inside parent class C05?
Inside C05 (FERTILISERS; Manufacture Thereof), C05B ranks #5 of 5 subclasses by grant volume and holds 11.8% of the parent class total. The largest sibling is C05G (1,232 grants).

What to do with this data

C05B in context - here's where to go next.

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

Methodology - C05B figures are USPTO PatentsView granted-utility totals for this subclass (513 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.