PlainPatent

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 grant trajectory.

2,224
US patents granted
#1/3
in B03
63.7%
B03 class share
-3%
5-yr velocity

The verdict

According to USPTO PatentsView, Magnetic Or Electrostatic Separation Of Solid Materials F… ranks #359 of 670 CPC technology areas - 2,224 US patents granted since 2015, with recorded grant volume down 3% over five years.

#359
of 670 CPC technology areas
2,224
US patents granted, 2015–2025
Lg
leading assignee (36)
-3%
grant velocity, last 5 yrs

How B03C's grant cadence moved

Between 2020–2024, B03C recorded 956 grants versus 984 in 2015–2019 (-3% equal-window velocity). Across complete years, output peaked in 2024 at 207 grants and bottomed in 2023 at 163 (+27% peak-over-trough). Lead assignee Adey Holdings (2008) Limited holds 1.4% of the class ; the top three share 3.3%.

Leaderboard read

B03C concentration, lead at 1.4%

Adey Holdings (2008) Limited leads this historical grant record at 1.4% of B03C - us corporation assignees hold 60% of class grants (446 of 744). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.

Leader's share
1.4%

31 of 2,224 grants

Top three share
3.3%

of the class's recorded grants

Lead over #2
8

more grants than Berkeley Lights, Inc.

Where B03C sits inside B03

Among 3 subclasses in 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), B03C ranks #1 and holds 63.7% of the parent class's 3,493 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.

B03B 658 B03D 611

Rising assignees active in B03C

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 H2Plus Operations, LLC 8.00x 0 → 8 company-wide · 6 in B03C
  2. #2 Eisenmann GMBH 8.00x 1 → 8 company-wide · 5 in B03C
  3. #3 Nanjing GenScript Biotech Co., Ltd. 8.00x 0 → 8 company-wide · 5 in B03C
  4. #4 Applied Cells Inc. 5.00x 0 → 5 company-wide · 5 in B03C
  5. #5 Exact Sciences Corporation 4.00x 8 → 32 company-wide · 12 in B03C

B03C grants by year, peak 2024 (207)

US utility-patent grants per year in B03C, 2015–2025 - recent five years are down 3% versus 2015–2019.

160170180190200210 20152016201720182019202020212022202320242025 165

Who leads B03C?

The 12 most active assignees in Magnetic OR Electrostatic Separation OF Solid Materials From Solid Materials OR FLUIDS; Separation BY High-voltage Electric Fields - wider bars mean more grants

patents

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.

Source USPTO PatentsView, granted utility patents As of 2015–2025 grant years
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

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). Scatter plot of 14 data points (bubble-sized by third dimension). 51015202530 010203040 Patents in B03C Avg claims / patent (company-wide) Adey Holdings (2008)Berkeley LightsGlobal Plasma…Cidra Corporate…Biological DynamicsExact SciencesCameron SolutionsQwtipGen-probe IncorporatedAdvanced Liquid LogicGenapsysCameron InternationalSysmexLuminex
Top 14 B03C assignees by class footprint. Bubble size = patents in B03C. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Classes near B03C's 2,224-grant footprint

Nationwide nearest neighbors for B03C (#359 of 670 by volume ; lead share 1.6%) - not the B03 parent-class siblings above.

Nearest by grant volume

C11B 2,242 F03G 2,252 C40B 2,284 A44B 2,161

Nearest by lead-assignee share

B65D 1.6% G01L 1.7% Y02W 1.6% C02F 1.7%

Questions about B03C

Which company holds the most patents in B03C?
LG Electronics Inc. leads B03C with 36 patents (1.4% of the subclass). By PatentsView assignee type, us corporations account for 60% of class grants.
Which B03C assignees grew fastest recently?
Among assignees with ≥5 grants in B03C, H2Plus Operations, LLC shows the highest company-wide grant multiple (8.00x: 0 grants in 2019–2021 → 8 in 2022–2024) while holding 6 patents in this subclass. Growth is company-wide, not class-only.
How does B03C compare inside parent class B03?
Inside 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), B03C ranks #1 of 3 subclasses by grant volume and holds 63.7% of the parent class total. The largest sibling is B03B (658 grants).

What to do with this data

B03C in context - here's where to go next.

  • Adey Holdings (2008) Limited leads B03C with 31 grants in this class. See full portfolio
  • B03C ranks #359 of 670 by grant volume among all tracked CPC technology areas. See the ranking
  • Inside parent class B03, the largest sibling subclass is B03B with 658 grants. Explore B03B

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

Methodology - B03C figures are USPTO PatentsView granted-utility totals for this subclass (2,224 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.