CPC technology class · C01
C01G - Compounds Containing Metals Not Covered By Subclasses C01…
Compounds containing metals not covered by subclasses c01d or c01f. 6,857 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.
- 6,857
- US patents granted
- #3/6
- in C01
- 15.8%
- C01 class share
- +24%
- 5-yr velocity
The verdict
According to USPTO PatentsView, Compounds Containing Metals Not Covered By Subclasses C01… ranks #209 of 670 CPC technology areas - 6,857 US patents granted since 2015, with recorded grant volume up 24% over five years.
- #209
- of 670 CPC technology areas
- 6,857
- US patents granted, 2015–2025
- Samsung
- leading assignee (300)
- +24%
- grant velocity, last 5 yrs
How C01G's grant cadence moved
Between 2020–2024, C01G recorded 3,063 grants versus 2,472 in 2015–2019 (+24% equal-window velocity). Across complete years, output peaked in 2024 at 664 grants and bottomed in 2015 at 443 (+50% peak-over-trough). Lead assignee Sumitomo Metal Mining Co., Ltd. holds 3.6% of the class ; the top three share 5.8%.
Leaderboard read
C01G concentration, lead at 3.6%
Sumitomo Metal Mining Co., Ltd. leads this historical grant record at 3.6% of C01G - foreign corporation assignees hold 81% of class grants (2,011 of 2,479). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.
- Leader's share
- 3.6%
- Top three share
- 5.8%
- Lead over #2
- 172
249 of 6,857 grants
of the class's recorded grants
more grants than LG Energy Solution, Ltd.
Where C01G sits inside C01
Among 6 subclasses in C01 (Inorganic Chemistry), C01G ranks #3 and holds 15.8% of the parent class's 43,500 recorded grants. Sibling chips below are the other subclasses in the same parent class, not the nationwide volume/lead-share peers further down.
Rising assignees active in C01G
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 LG Energy Solution, Ltd. 770x 2 → 1,539 company-wide · 77 in C01G
- #2 SK On Co., Ltd. 243x 0 → 243 company-wide · 24 in C01G
- #3 King Faisal University 125x 6 → 747 company-wide · 13 in C01G
- #4 Contemporary Amperex Technology (HONG KONG) Limited 87x 0 → 87 company-wide · 10 in C01G
- #5 Guangdong Brunp Recycling Technology Co., Ltd. 61x 0 → 61 company-wide · 21 in C01G
C01G grants by year, peak 2024 (664)
US utility-patent grants per year in C01G, 2015–2025 - recent five years are up 24% versus 2015–2019.
Who leads C01G?
The 12 most active assignees in Compounds Containing Metals NOT Covered BY Subclasses C01d OR C01f - wider bars mean more grants
- Sumitomo Metal Mining
Sumitomo Metal Mining Co., Ltd.
249 patents
- Lg Energy Solution 77
LG Energy Solution, Ltd.
77 patents
- Umicore 73
Umicore
73 patents
- Nichia 55
Nichia Corporation
55 patents
- Umicore Korea 50
Umicore Korea Ltd.
50 patents
- Ecopro Bm 45
Ecopro BM Co., Ltd.
45 patents
- Toda Kogyo 36
Toda Kogyo Corp.
36 patents
- Imam Abdulrahman Bin… 35
Imam Abdulrahman Bin Faisal University
35 patents
- Uchicago Argonne 34
Uchicago Argonne, LLC
34 patents
- National Institute of… 33
National Institute of Advanced Industrial Science and Technology
33 patents
- Dowa Materials 33
Dowa Electronics Materials Co., Ltd.
33 patents
- Mitsui Mining &… 32
Mitsui Mining & Smelting Co., Ltd.
32 patents
What this shows Samsung is the most active filer in C01G, holding 300 of the 6,857 patents in this class. Concentration at the top signals how contestable this technology area is for new entrants.
View data table
| Rank | Company | Patents in C01G |
|---|---|---|
| #1 | Sumitomo Metal Mining Co., Ltd. | 249 |
| #2 | LG Energy Solution, Ltd. | 77 |
| #3 | Umicore | 73 |
| #4 | Nichia Corporation | 55 |
| #5 | Umicore Korea Ltd. | 50 |
| #6 | Ecopro BM Co., Ltd. | 45 |
| #7 | Toda Kogyo Corp. | 36 |
| #8 | Imam Abdulrahman Bin Faisal University | 35 |
| #9 | Uchicago Argonne, LLC | 34 |
| #10 | National Institute of Advanced Industrial Science and Technology | 33 |
| #11 | Dowa Electronics Materials Co., Ltd. | 33 |
| #12 | Mitsui Mining & Smelting Co., Ltd. | 32 |
| #13 | JX Nippon Mining & Metals Corporation | 31 |
| #14 | Sakai Chemical Industry Co., Ltd. | 29 |
| #15 | GS Yuasa International Ltd. | 26 |
| #16 | M. Technique Co., Ltd. | 25 |
| #17 | Contemporary Amperex Technology Co., Limited | 24 |
| #18 | SK On Co., Ltd. | 24 |
| #19 | Iucf-hyu (INDUSTRY-UNIVERSITY Cooperation Foundation Hanyang UNIVERSITY) | 24 |
| #20 | Powdertech Co., Ltd. | 23 |
Footprint here vs. claim strategy
Each dot is a leading C01G 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.
Classes near C01G's 6,857-grant footprint
Nationwide nearest neighbors for C01G (#209 of 670 by volume ; lead share 4.4%) - not the C01 parent-class siblings above.
Nearest by grant volume
Questions about C01G
Which company holds the most patents in C01G?
Which C01G assignees grew fastest recently?
How does C01G compare inside parent class C01?
What to do with this data
C01G in context - here's where to go next.
- Sumitomo Metal Mining Co., Ltd. leads C01G with 249 grants in this class. See full portfolio
- C01G ranks #209 of 670 by grant volume among all tracked CPC technology areas. See the ranking
- Inside parent class C01, the largest sibling subclass is C01B with 20,252 grants. Explore C01B
Figures reflect USPTO PatentsView grant data through 2026-05-15; pending applications not yet granted are not counted.
Methodology - C01G figures are USPTO PatentsView granted-utility totals for this subclass (6,857 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.