- All sections
- C - Chemistrymetallurgy
- C07D - Heterocyclic compounds
- C07D 331/02 - Three-membered rings
Patent holdings for IPC class C07D 331/02
Total number of patents in this class: 87
10-year publication summary
|
8
|
4
|
1
|
6
|
3
|
4
|
6
|
10
|
4
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Gas Chemical Company, Inc. | 3552 |
25 |
| Mitsui Chemicals, Inc. | 3225 |
9 |
| University of Notre Dame du Lac | 589 |
7 |
| Sumitomo Chemical Company, Limited | 9051 |
5 |
| Shin-Etsu Chemical Co., Ltd. | 5878 |
4 |
| Hoya Lens Thailand Ltd. | 591 |
4 |
| PPG Industries Ohio, Inc. | 3384 |
3 |
| Asahi Kasei Chemicals Corporation | 589 |
3 |
| Efirm New Material Co.， Ltd. | 15 |
3 |
| The Board of Trustees of the University of Illinois | 2737 |
2 |
| Biosynthetic Technologies, LLC | 90 |
2 |
| Koc Solution Co., Ltd. | 65 |
2 |
| Bayer Cropscience AG | 1950 |
1 |
| Northrop Grumman Systems Corporation | 2928 |
1 |
| Dow Global Technologies LLC | 10707 |
1 |
| Adeka Corporation | 1370 |
1 |
| Agrium Inc. | 8 |
1 |
| Arizona Board of Regents, a Body Corporate of The State of Arizona Acting for and on Behalf of Arizona State University | 281 |
1 |
| BL Technologies, Inc. | 838 |
1 |
| China Petroleum & Chemical Corporation | 2002 |
1 |
| Other owners | 10 |