- All sections
- C - Chemistrymetallurgy
- C07C - Acyclic or carbocyclic compounds
- C07C 29/152 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively with hydrogen or hydrogen-containing gases characterised by the reactor used
Patent holdings for IPC class C07C 29/152
Total number of patents in this class: 363
10-year publication summary
|
22
|
12
|
20
|
21
|
23
|
40
|
42
|
35
|
41
|
38
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Topsoe A/S | 1074 |
30 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 4141 |
23 |
| NGK Insulators, Ltd. | 5170 |
19 |
| Sumitomo Chemical Company, Limited | 8989 |
12 |
| Casale SA | 639 |
12 |
| Mitsubishi Gas Chemical Company, Inc. | 3650 |
12 |
| Johnson Matthey Davy Technologies Limited | 533 |
10 |
| SABIC Global Technologies B.V. | 4629 |
10 |
| Gascontec GmbH | 41 |
9 |
| Mitsubishi Heavy Industries, Ltd. | 9231 |
7 |
| Haldor Topsøe A/S | 629 |
7 |
| Siemens AG | 23913 |
6 |
| Lone Gull Holdings, Ltd. | 156 |
6 |
| Chevron U.S.A. Inc. | 4175 |
5 |
| Silicon Fire AG | 19 |
5 |
| ThyssenKrupp Uhde GmbH | 387 |
5 |
| Clariant International Ltd. | 893 |
4 |
| Lurgi GmbH | 94 |
4 |
| Velocys, Inc. | 52 |
4 |
| Linde GmbH | 1382 |
4 |
| Other owners | 169 |