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 filing trajectory.

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

1,431
US patents granted: B07
Parent CPC class: 20
Active assignees: +19%
5-yr velocity

The verdict

Separating Solids FROM Solids BY Sieving ranks #411 of 670 CPC technology areas - 1,431 US patents granted since 2015, with filing up 19% over five years.

#411
of 670 CPC technology areas: 1,431
US patents granted, 2015–2025: Derrick
leading assignee (84): +19%
filing velocity, last 5 yrs

Top assignee: Derrick Corporation (84 patents)

CPC subclass B07B - 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 - covers 1,431 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class B07 (SEPARATING SOLIDS FROM SOLIDS; SORTING). See our CPC classification guide for how the system works.

The competitive landscape in B07B is shaped by 20 distinct companies actively filing in this space. Derrick Corporation leads with 84 patents, followed by M-I L.l.c. at 52 grants and Terex USA, Llc at 28.

Filing activity in B07B is up 19% 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 B07B innovation accelerating?

US utility-patent grants per year in B07B, 2015–2025 - recent five years are up 19% 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 Servi…

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

About This Class

CPC subclass B07B belongs to class B07.

1,431 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 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).

Frequently Asked Questions

What is CPC class B07B?

CPC subclass B07B covers 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. It belongs to CPC class B07 (SEPARATING SOLIDS FROM SOLIDS; SORTING), with 1,431 US utility patents granted since 2015.

How many patents have been filed in B07B?

1,431 US utility patents were granted in CPC subclass B07B between 2015 and 2025, based on USPTO PatentsView data.

Which company holds the most patents in B07B?

Derrick Corporation leads B07B with 84 patents, making it the most active assignee in this technology area.

How is patent data for B07B 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., B07) is a broad technology category. Subclasses like B07B 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.