CPC technology class · C01

C01P - Indexing Scheme Relating TO Structural AND Physical Aspec…

Indexing scheme relating to structural and physical aspects of solid inorganic compounds. 12,347 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

12,347
US patents granted: C01
Parent CPC class: 20
Active assignees: +58%
5-yr velocity

The verdict

Indexing Scheme Relating TO Structural AND Physical Aspec… ranks #150 of 670 CPC technology areas - 12,347 US patents granted since 2015, with filing up 58% over five years.

#150
of 670 CPC technology areas: 12,347
US patents granted, 2015–2025: Samsung
leading assignee (369): +58%
filing velocity, last 5 yrs

Top assignee: Samsung Electronics Co., Ltd. (369 patents)

CPC subclass C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS - covers 12,347 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 C01P is shaped by 20 distinct companies actively filing in this space. Samsung Electronics Co., Ltd. leads with 369 patents, followed by OMYA International Ag at 175 grants and LG Energy Solution, Ltd. at 108.

Filing activity in C01P is up 58% 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 C01P innovation accelerating?

US utility-patent grants per year in C01P, 2015–2025 - recent five years are up 58% versus 2015–2019.

Sumitomo Metal Mining

231
Omya International

175
Lg Energy Solution

108
Sumitomo Chemical

84
Ngk Insulators

79
King Fahd University…

77
Umicore

77
Nichia

73
Chevron U

66
Rhodia Operations

54
Mitsui Mining & Smelt…

52
Umicore Korea

48

What this shows Samsung is the most active filer in C01P, holding 369 of the 12,347 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 C01P
Rank	Company	Patents in C01P
#1	Sumitomo Metal Mining Co., Ltd.	231
#2	OMYA International Ag	175
#3	LG Energy Solution, Ltd.	108
#4	Sumitomo Chemical Company, Limited	84
#5	NGK Insulators, Ltd.	79
#6	KING FAHD University OF Petroleum AND Minerals	77
#7	Umicore	77
#8	Nichia Corporation	73
#9	Chevron U.s.a. Inc.	66
#10	Rhodia Operations	54
#11	Mitsui Mining & Smelting Co., Ltd.	52
#12	Umicore Korea Ltd.	48
#13	Cabot Corporation	47
#14	National Institute Of Advanced Industrial Science And Technology	46
#15	King Abdullah University Of Science And Technology	45
#16	Ecopro BM Co., Ltd.	45
#17	Imam Abdulrahman Bin Faisal University	42
#18	Tokuyama Corporation	42
#19	Eckart Gmbh	42
#20	China Petroleum & Chemical Corporation	41

About This Class

CPC subclass C01P belongs to class C01.

12,347 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 C01P 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 C01P assignees by class footprint. Bubble size = patents in C01P. Source: USPTO PatentsView (claim depth is company-wide across all classes).

Frequently Asked Questions

What is CPC class C01P?

CPC subclass C01P covers INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS. It belongs to CPC class C01 (INORGANIC CHEMISTRY), with 12,347 US utility patents granted since 2015.

How many patents have been filed in C01P?

12,347 US utility patents were granted in CPC subclass C01P between 2015 and 2025, based on USPTO PatentsView data.

Which company holds the most patents in C01P?

Samsung Electronics Co., Ltd. leads C01P with 369 patents, making it the most active assignee in this technology area.

How is patent data for C01P 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 C01P 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.