CPC technology class · C09
C09G - Polishing Compositions
Polishing compositions ; ski waxes. 1,039 US utility patents granted 2015–2025, with the leading assignees and year-by-year grant trajectory.
- 1,039
- US patents granted
- #6/8
- in C09
- 1.4%
- C09 class share
- -3%
- 5-yr velocity
The verdict
According to USPTO PatentsView, Polishing Compositions ranks #457 of 670 CPC technology areas - 1,039 US patents granted since 2015, with recorded grant volume down 3% over five years.
- #457
- of 670 CPC technology areas
- 1,039
- US patents granted, 2015–2025
- Fujimi Incorporated
- leading assignee (126)
- -3%
- grant velocity, last 5 yrs
How C09G's grant cadence moved
Between 2020–2024, C09G recorded 449 grants versus 465 in 2015–2019 (-3% equal-window velocity). Across complete years, output peaked in 2021 at 110 grants and bottomed in 2024 at 69 (+59% peak-over-trough). Lead assignee Fujimi Incorporated holds 12.1% of the class ; the top three share 25.7%.
Leaderboard read
C09G concentration, lead at 12.1%
Fujimi Incorporated leads this historical grant record at 12.1% of C09G - foreign corporation assignees hold 52% of class grants (294 of 568). Figures describe granted US utility patents in this CPC subclass, not current investment or legal strength.
- Leader's share
- 12.1%
- Top three share
- 25.7%
- Lead over #2
- 50
126 of 1,039 grants
of the class's recorded grants
more grants than Cabot Microelectronics Corporation
Where C09G sits inside C09
Among 8 subclasses in C09 (DYES; PAINTS; POLISHES; Natural RESINS; ADHESIVES; Compositions NOT Otherwise Provided FOR; Applications OF Materials NOT Otherwise Provided FOR), C09G ranks #6 and holds 1.4% of the parent class's 74,898 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 C09G
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 Kctech Co., Ltd. 3.00x 6 → 18 company-wide · 20 in C09G
- #2 Anji Microelectronics (Shanghai) Co. Ltd 3.00x 0 → 3 company-wide · 5 in C09G
- #3 CMC Materials LLC 2.29x 7 → 16 company-wide · 21 in C09G
- #4 Showa Denko Materials Co., Ltd. 1.32x 62 → 82 company-wide · 14 in C09G
- #5 Globalwafers Co., Ltd. 1.15x 112 → 129 company-wide · 6 in C09G
C09G grants by year, peak 2021 (110)
US utility-patent grants per year in C09G, 2015–2025 - recent five years are down 3% versus 2015–2019.
Who leads C09G?
The 12 most active assignees in Polishing Compositions ; SKI Waxes - wider bars mean more grants
- Fujimi Incorporated
Fujimi Incorporated
126 patents
- Cabot Microelectronics
Cabot Microelectronics Corporation
76 patents
- Rohm and Haas…
Rohm and Haas Electronic Materials CMP Holdings, Inc.
65 patents
- Versum Materials Us 37
Versum Materials US, LLC
37 patents
- Hitachi Chemical 35
Hitachi Chemical Company, Ltd.
35 patents
- Fujifilm Materials U 29
Fujifilm Electronic Materials U.S.A., Inc.
29 patents
- Cmc Materials 21
CMC Materials LLC
21 patents
- Kctech 20
Kctech Co., Ltd.
20 patents
- Jgc Catalysts and… 15
JGC Catalysts and Chemicals Ltd.
15 patents
- Saint-gobain Ceramics… 14
Saint-gobain Ceramics & Plastics, Inc.
14 patents
- Showa Denko Materials 14
Showa Denko Materials Co., Ltd.
14 patents
- Hoya 10
Hoya Corporation
10 patents
What this shows Fujimi Incorporated is the most active filer in C09G, holding 126 of the 1,039 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 C09G |
|---|---|---|
| #1 | Fujimi Incorporated | 126 |
| #2 | Cabot Microelectronics Corporation | 76 |
| #3 | Rohm and Haas Electronic Materials CMP Holdings, Inc. | 65 |
| #4 | Versum Materials US, LLC | 37 |
| #5 | Hitachi Chemical Company, Ltd. | 35 |
| #6 | Fujifilm Electronic Materials U.S.A., Inc. | 29 |
| #7 | CMC Materials LLC | 21 |
| #8 | Kctech Co., Ltd. | 20 |
| #9 | JGC Catalysts and Chemicals Ltd. | 15 |
| #10 | Saint-gobain Ceramics & Plastics, Inc. | 14 |
| #11 | Showa Denko Materials Co., Ltd. | 14 |
| #12 | Hoya Corporation | 10 |
| #13 | Nitta Haas Inc. | 10 |
| #14 | Fujifilm Planar Solutions, LLC | 10 |
| #15 | Uwiz Technology Co., Ltd. | 9 |
| #16 | Yamaguchi Seiken Kogyo Co., Ltd. | 8 |
| #17 | Globalwafers Co., Ltd. | 6 |
| #18 | Sinmat, Inc. | 6 |
| #19 | Anji Microelectronics (Shanghai) Co. Ltd | 5 |
| #20 | Dongjin Semichem Co., Ltd. | 4 |
Footprint here vs. claim strategy
Each dot is a leading C09G 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 C09G's 1,039-grant footprint
Nationwide nearest neighbors for C09G (#457 of 670 by volume ; lead share 12.1%) - not the C09 parent-class siblings above.
Nearest by grant volume
Nearest by lead-assignee share
Questions about C09G
Which company holds the most patents in C09G?
Which C09G assignees grew fastest recently?
How does C09G compare inside parent class C09?
What to do with this data
C09G in context - here's where to go next.
- Fujimi Incorporated leads C09G with 126 grants in this class. See full portfolio
- C09G ranks #457 of 670 by grant volume among all tracked CPC technology areas. See the ranking
- Inside parent class C09, the largest sibling subclass is C09K with 29,124 grants. Explore C09K
Figures reflect USPTO PatentsView grant data through 2026-05-15; pending applications not yet granted are not counted.
Methodology - C09G figures are USPTO PatentsView granted-utility totals for this subclass (1,039 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.