CPC technology class · B03

B03B - Separating Solid Materials Using Liquids OR Using Pneumat…

Separating solid materials using liquids or using pneumatic tables or jigs. 658 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

658
US patents granted: B03
Parent CPC class: 20
Active assignees: +40%
5-yr velocity

The verdict

Separating Solid Materials Using Liquids OR Using Pneumat… ranks #510 of 670 CPC technology areas - 658 US patents granted since 2015, with filing up 40% over five years.

#510
of 670 CPC technology areas: 658
US patents granted, 2015–2025: Cidra Corporate Servi…
leading assignee (19): +40%
filing velocity, last 5 yrs

Top assignee: Cidra Corporate Services Llc (19 patents)

CPC subclass B03B - SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS - covers 658 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class B03 (SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTR). See our CPC classification guide for how the system works.

The competitive landscape in B03B is shaped by 20 distinct companies actively filing in this space. Cidra Corporate Services Llc leads with 19 patents, followed by CDE Global Limited at 18 grants and WM Intellectual Property Holdings, L.l.c. at 10.

Filing activity in B03B is up 40% over the past five years versus 2015-2019, a sharp acceleration suggesting an emerging or fast-moving technology area. All counts come directly from USPTO PatentsView and reflect US granted utility patents only.

Is B03B innovation accelerating?

US utility-patent grants per year in B03B, 2015–2025 - recent five years are up 40% versus 2015–2019.

Cidra Corporate Servi…

19
Cde Global

18
Wm Intellectual Prope…

10
Superior Industries

9
China University of M…

8
Recycling

8
Flsmidth A/S

6
Icm

6
Tav Holdings

6
Li-cycle

6
Organic Energy

6
Daiki

5

What this shows Cidra Corporate Servi… is the most active filer in B03B, holding 19 of the 658 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 B03B
Rank	Company	Patents in B03B
#1	Cidra Corporate Services Llc	19
#2	CDE Global Limited	18
#3	WM Intellectual Property Holdings, L.l.c.	10
#4	Superior Industries, Inc.	9
#5	China University Of Mining And Technology	8
#6	Sa Recycling Llc	8
#7	Flsmidth A/s	6
#8	ICM, Inc.	6
#9	TAV Holdings, Inc.	6
#10	Li-cycle Corp.	6
#11	Organic Energy Corporation	6
#12	Daiki Co., Ltd.	5
#13	CP Manufacturing, Inc.	5
#14	Newcastle Innovation Limited	5
#15	BEST Process Solutions, Inc.	5
#16	Anglo American Services (uk) Ltd	4
#17	M-I L.l.c.	3
#18	Flodesign Sonics, Inc.	3
#19	Guangdong Brunp Recycling Technology Co., Ltd.	3
#20	Hunan Brunp Recycling Technology Co., Ltd.	3

About This Class

CPC subclass B03B belongs to class B03.

658 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 B03B 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 B03B assignees by class footprint. Bubble size = patents in B03B. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class B03B?

CPC subclass B03B covers SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS. It belongs to CPC class B03 (SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTR), with 658 US utility patents granted since 2015.

How many patents have been filed in B03B?

658 US utility patents were granted in CPC subclass B03B between 2015 and 2025, based on USPTO PatentsView data.

Which company holds the most patents in B03B?

Cidra Corporate Services Llc leads B03B with 19 patents, making it the most active assignee in this technology area.

How is patent data for B03B 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., B03) is a broad technology category. Subclasses like B03B 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.