- All sections
- C - Chemistry; metallurgy
- C10G - Cracking hydrocarbon oils; production of liquid hydrocarbon mixtures, e.g. by destructive hydrogenation, oligomerisation, polymerisation; recovery of hydrocarbon oils from oil-shale, oil-sand, or gases; refining mixtures mainly consisting of hydrocarbons; reforming of naphtha; mineral waxes
- C10G 21/28 - Recovery of used solvent
Patent holdings for IPC class C10G 21/28
Total number of patents in this class: 209
10-year publication summary
13
|
13
|
9
|
15
|
15
|
10
|
14
|
24
|
10
|
3
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Saudi Arabian Oil Company | 11322 |
23 |
Shell Internationale Research Maatschappij B.V. | 3792 |
13 |
Uop LLC | 4083 |
11 |
Shell Oil Company | 2196 |
10 |
Aramco Services Company | 3504 |
8 |
AMT International, Inc. | 47 |
7 |
CPC Corporation, Taiwan | 53 |
7 |
IFP Energies Nouvelles | 2717 |
7 |
ExxonMobil Chemical Patents Inc. | 4286 |
6 |
Fort Hills Energy L.P. | 83 |
5 |
The Queen's University of Belfast | 264 |
5 |
Kellogg Brown & Root LLC | 489 |
4 |
Canadian Natural Upgrading Limited | 52 |
4 |
Council of Scientific & Industrial Research | 1397 |
3 |
INEOS Americas LLC | 27 |
3 |
SABIC Global Technologies B.V. | 4044 |
3 |
SunCor Energy Inc. | 838 |
3 |
Shell USA, Inc. | 1074 |
3 |
BASF SE | 19740 |
2 |
Chevron U.S.A. Inc. | 3774 |
2 |
Other owners | 80 |