PlainPatent

CPC technology class · C01

C01F - Compounds OF THE Metals Beryllium

Compounds of the metals beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium, or of the rare-earth metals. 2,333 US utility patents granted 2015–2025, with the leading assignees and year-by-year filing trajectory.

2,333
US patents granted
C01
Parent CPC class
20
Active assignees
+34%
5-yr velocity

The verdict

Compounds OF THE Metals Beryllium ranks #352 of 670 CPC technology areas - 2,333 US patents granted since 2015, with filing up 34% over five years.

#352
of 670 CPC technology areas
2,333
US patents granted, 2015–2025
Omya International
leading assignee (83)
+34%
filing velocity, last 5 yrs
Top assignee: OMYA International Ag (83 patents)

CPC subclass C01F - COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS - covers 2,333 US utility patents granted between 2015 and 2025 according to USPTO PatentsView records, within the broader CPC class C01 (INORGANIC CHEMISTRY). See our CPC classification guide for how the system works.

The competitive landscape in C01F is shaped by 20 distinct companies actively filing in this space. OMYA International Ag leads with 83 patents, followed by Saint-gobain Ceramics & Plastics, Inc. at 23 grants and Purac Biochem BV at 16.

Filing activity in C01F is up 34% 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 C01F innovation accelerating?

US utility-patent grants per year in C01F, 2015–2025 - recent five years are up 34% versus 2015–2019.

140160180200220240 20152016201720182019202020212022202320242025 152

Who leads C01F?

The 12 most active assignees in COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS - wider bars mean more grants

patents

What this shows Omya International is the most active filer in C01F, holding 83 of the 2,333 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 C01F
Rank Company Patents in C01F
#1 OMYA International Ag 83
#2 Saint-gobain Ceramics & Plastics, Inc. 23
#3 Purac Biochem BV 16
#4 S.a. Lhoist Recherche Et Développement 16
#5 Mississippi Lime Company 16
#6 Innovator Energy Llc. 13
#7 M. Technique Co., Ltd. 11
#8 Sakai Chemical Industry Co., Ltd. 11
#9 UBE Material Industries, Ltd. 10
#10 Mangrove Water Technologies Ltd. 10
#11 Cerion, Llc 9
#12 FRS Group, Llc 9
#13 Orbite Technologies Inc. 9
#14 Worcester Polytechnic Institute 8
#15 Calix, Inc. 8
#16 Tateho Chemical Industries Co., Ltd 8
#17 Fujimi Incorporated 7
#18 Korea Institute Of Geoscience And Mineral Resources 7
#19 Nippon Paper Industries Co., Ltd. 7
#20 Cytec Industries, Inc. 7

About This Class

CPC subclass C01F belongs to class C01.

2,333 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 C01F 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 C01F assignees by class footprint. Bubble size = patents in C01F. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Top 14 C01F assignees by class footprint. Bubble size = patents in C01F. Source: USPTO PatentsView (claim depth is company-wide across all classes). Scatter plot of 14 data points (bubble-sized by third dimension). 51015202530 020406080100 Patents in C01F Avg claims / patent (company-wide) Omya InternationalSaint-gobain Ceramics…Purac Biochem BvLhoist Recherche et D…Mississippi LimeInnovator EnergyM TechniqueSakai Chemical Indust…Ube Material Industri…Mangrove WaterCerionFrs GroupOrbiteWorcester Polytechnic…
Top 14 C01F assignees by class footprint. Bubble size = patents in C01F. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class C01F?
CPC subclass C01F covers COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS. It belongs to CPC class C01 (INORGANIC CHEMISTRY), with 2,333 US utility patents granted since 2015.
How many patents have been filed in C01F?
2,333 US utility patents were granted in CPC subclass C01F between 2015 and 2025, based on USPTO PatentsView data.
Which company holds the most patents in C01F?
OMYA International Ag leads C01F with 83 patents, making it the most active assignee in this technology area.
How is patent data for C01F 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., C01) is a broad technology category. Subclasses like C01F 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.