CPC technology class · B03

B03C - Magnetic OR Electrostatic Separation OF Solid Materials F…

Magnetic or electrostatic separation of solid materials from solid materials or fluids; separation by high-voltage electric fields. 2,224 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

2,224
US patents granted: B03
Parent CPC class: 20
Active assignees: +14%
5-yr velocity

The verdict

Magnetic OR Electrostatic Separation OF Solid Materials F… ranks #359 of 670 CPC technology areas - 2,224 US patents granted since 2015, with filing up 14% over five years.

#359
of 670 CPC technology areas: 2,224
US patents granted, 2015–2025: Lg
leading assignee (36): +14%
filing velocity, last 5 yrs

Top assignee: LG Electronics Inc. (36 patents)

CPC subclass B03C - MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS - covers 2,224 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 B03C is shaped by 20 distinct companies actively filing in this space. LG Electronics Inc. leads with 36 patents, followed by Berkeley Lights, Inc. at 23 grants and Global Plasma Solutions, Inc. at 19.

Filing activity in B03C is up 14% 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 B03C innovation accelerating?

US utility-patent grants per year in B03C, 2015–2025 - recent five years are up 14% versus 2015–2019.

Adey Holdings (2008)

31
Berkeley Lights

23
Global Plasma Solutio…

19
Cidra Corporate Servi…

15
Biological Dynamics

13
Exact Sciences

12
Cameron Solutions

12
Qwtip

11
Gen-probe Incorporated

10
Advanced Liquid Logic

10
Genapsys

9
Cameron International

8

What this shows Lg is the most active filer in B03C, holding 36 of the 2,224 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 B03C
Rank	Company	Patents in B03C
#1	ADEY Holdings (2008) Limited	31
#2	Berkeley Lights, Inc.	23
#3	Global Plasma Solutions, Inc.	19
#4	Cidra Corporate Services Llc	15
#5	Biological Dynamics, Inc.	13
#6	Exact Sciences Corporation	12
#7	Cameron Solutions, Inc.	12
#8	Qwtip Llc	11
#9	Gen-probe Incorporated	10
#10	Advanced Liquid Logic, Inc.	10
#11	Genapsys, Inc.	9
#12	Cameron International Corporation	8
#13	Sysmex Corporation	8
#14	Luminex Corporation	8
#15	Menarini Silicon Biosystems S.p.a.	8
#16	Environmental Management Confederation, Inc.	8
#17	Fluid-screen, Inc.	8
#18	Microjet Technology Co., Ltd.	7
#19	Inguran, Llc	7
#20	Agents AIR Llc	7

About This Class

CPC subclass B03C belongs to class B03.

2,224 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 B03C 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 B03C assignees by class footprint. Bubble size = patents in B03C. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class B03C?

CPC subclass B03C covers MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS. 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 2,224 US utility patents granted since 2015.

How many patents have been filed in B03C?

2,224 US utility patents were granted in CPC subclass B03C between 2015 and 2025, based on USPTO PatentsView data.

Which company holds the most patents in B03C?

LG Electronics Inc. leads B03C with 36 patents, making it the most active assignee in this technology area.

How is patent data for B03C 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 B03C 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.