- All sections
- B - Performing operations; transporting
- B01J - Chemical or physical processes, e.g. catalysis or colloid chemistry; their relevant apparatus
- B01J 31/24 - Phosphines
Patent holdings for IPC class B01J 31/24
Total number of patents in this class: 1039
10-year publication summary
|
86
|
88
|
84
|
77
|
105
|
54
|
66
|
92
|
97
|
20
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Eastman Chemical Company | 2239 |
34 |
| Chevron Phillips Chemical Company LP | 1779 |
26 |
| Takasago International Corporation | 406 |
25 |
| Dow Global Technologies LLC | 10147 |
24 |
| Evonik Oxeno GmbH & Co. KG | 278 |
24 |
| BASF SE | 19740 |
23 |
| LG Chem, Ltd. | 17205 |
23 |
| Dow Technology Investments LLC | 270 |
19 |
| Saudi Arabian Oil Company | 11322 |
15 |
| Umicore AG & Co. KG | 867 |
15 |
| Firmenich SA | 1612 |
14 |
| IFP Energies Nouvelles | 2717 |
13 |
| Nitto Denko Corporation | 7879 |
12 |
| Johnson Matthey Public Limited Company | 1852 |
11 |
| DSM IP Assets B.V. | 5856 |
10 |
| Arlanxeo Deutschland GmbH | 302 |
10 |
| The University of Tokyo | 3903 |
10 |
| The Regents of the University of California | 18943 |
9 |
| Mitsui Chemicals, Inc. | 3134 |
9 |
| National Institute of Advanced Industrial Science and Technology | 3677 |
9 |
| Other owners | 704 |