CPC technology class · B07

B07B - Separating Solids From Solids By Sieving

Separating solids from solids by sieving, screening, sifting or by using gas currents; separating by other dry methods applicable to bulk material, e.g. loose articles fit to be handled like bulk material. 1,431 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.

Compiled by PlainPatent · May 15, 2026

1,431
US patents granted: #2/2
in B07: 38.4%
B07 class share: +6%
5-yr velocity

The verdict

According to USPTO PatentsView, Separating Solids From Solids By Sieving ranks #411 of 670 CPC technology areas - 1,431 US patents granted since 2015, with recorded grant volume up 6% over five years.

#411
of 670 CPC technology areas: 1,431
US patents granted, 2015–2025: Derrick
leading assignee (84): +6%
grant velocity, last 5 yrs

How B07B's grant cadence moved

Between 2020–2024, B07B recorded 670 grants versus 632 in 2015–2019 (+6% equal-window velocity). Across complete years, output peaked in 2023 at 154 grants and bottomed in 2016 at 111 (+39% peak-over-trough). Lead assignee Derrick Corporation holds 5.9% of the class ; the top three share 11.5%.

Leaderboard read

B07B concentration, lead at 5.9%

Derrick Corporation leads this historical grant record at 5.9% of B07B - us corporation assignees hold 56% of class grants (403 of 725). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share: 5.9%
Top three share: 11.5%
Lead over #2: 32

Where B07B sits inside B07

Among 2 subclasses in B07 (Separating Solids From SOLIDS; Sorting), B07B ranks #2 and holds 38.4% of the parent class's 3,724 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

B07C 2,293

Rising assignees active in B07B

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 Metso Outotec Finland Oy 9.00x 3 → 27 company-wide · 6 in B07B
#2 Kleemann GmbH 7.33x 3 → 22 company-wide · 8 in B07B
#3 Metso Sweden AB 3.75x 4 → 15 company-wide · 6 in B07B
#4 Aussie Wine Group Holdings PTY Ltd. 3.00x 0 → 3 company-wide · 5 in B07B
#5 WM Intellectual Property Holdings, L.L.C. 2.73x 15 → 41 company-wide · 7 in B07B

B07B grants by year, peak 2023 (154)

US utility-patent grants per year in B07B, 2015–2025 - recent five years are up 6% versus 2015–2019.

Derrick

84
M-i L L C

52
Terex Usa

28
Metso Minerals

18
Cde Global

18
Superior Industries

16
Vermeer Manufacturing

14
Cp Manufacturing

13
Cidra Corporate…

12
National Oilwell Varco

11
M-i Drilling Fluids Uk

10
Daiki

9

What this shows Derrick is the most active filer in B07B, holding 84 of the 1,431 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 B07B
Rank	Company	Patents in B07B
#1	Derrick Corporation	84
#2	M-I L.L.C.	52
#3	Terex USA, LLC	28
#4	Metso Minerals, Inc.	18
#5	CDE Global Limited	18
#6	Superior Industries, Inc.	16
#7	Vermeer Manufacturing Company	14
#8	CP Manufacturing, Inc.	13
#9	Cidra Corporate Services LLC	12
#10	National Oilwell Varco, L.P.	11
#11	M-I Drilling Fluids UK Limited	10
#12	Daiki Co., Ltd.	9
#13	Bühler AG	8
#14	Kleemann GmbH	8
#15	Thyssenkrupp Industrial Solutions AG	7
#16	WM Intellectual Property Holdings, L.L.C.	7
#17	Terex GB Limited	7
#18	Nisshin Seifun Group Inc.	7
#19	General Kinematics Corporation	7
#20	Tega Industries Limited	7

Footprint here vs. claim strategy

Each dot is a leading B07B 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 B07B assignees by class footprint. Bubble size = patents in B07B. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Classes near B07B's 1,431-grant footprint

Nationwide nearest neighbors for B07B (#411 of 670 by volume ; lead share 5.9%) - not the B07 parent-class siblings above.

Nearest by grant volume

B65F 1,429 D21C 1,427 D02G 1,439 G04F 1,418

Nearest by lead-assignee share

B31B 5.9% B03D 5.9% C07J 5.8% C23G 5.8%

Questions about B07B

Which company holds the most patents in B07B?

Derrick Corporation leads B07B with 84 patents (5.9% of the subclass). By PatentsView assignee type, us corporations account for 56% of class grants.

Which B07B assignees grew fastest recently?

Among assignees with ≥5 grants in B07B, Metso Outotec Finland Oy shows the highest company-wide grant multiple (9.00x: 3 grants in 2019–2021 → 27 in 2022–2024) while holding 6 patents in this subclass. Growth is company-wide, not class-only.

How does B07B compare inside parent class B07?

Inside B07 (Separating Solids From SOLIDS; Sorting), B07B ranks #2 of 2 subclasses by grant volume and holds 38.4% of the parent class total. The largest sibling is B07C (2,293 grants).

What to do with this data

B07B in context - here's where to go next.

Derrick Corporation leads B07B with 84 grants in this class. See full portfolio
B07B ranks #411 of 670 by grant volume among all tracked CPC technology areas. See the ranking
Inside parent class B07, the largest sibling subclass is B07C with 2,293 grants. Explore B07C

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

Methodology - B07B figures are USPTO PatentsView granted-utility totals for this subclass (1,431 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.