- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F02D - Controlling combustion engines
- F02D 15/00 - Varying compression ratio
Patent holdings for IPC class F02D 15/00
Total number of patents in this class: 157
10-year publication summary
|
18
|
17
|
15
|
15
|
12
|
19
|
8
|
6
|
4
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 13301 |
17 |
| Nissan Motor Co., Ltd. | 12249 |
14 |
| Ford Global Technologies, LLC | 19702 |
10 |
| Daimler AG | 3462 |
10 |
| Hitachi Automotive Systems, Ltd. | 3970 |
8 |
| Toyota Motor Corporation | 28582 |
7 |
| Mazda Motor Corporation | 3087 |
6 |
| Pinnacle Engines, Inc. | 37 |
6 |
| Denso Corporation | 23338 |
4 |
| Mce-5 Development | 36 |
4 |
| Hitachi Astemo, Ltd. | 5618 |
3 |
| Honda Motor Co., Ltd. | 24537 |
2 |
| The Regents of the University of California | 18943 |
2 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
2 |
| Robert Bosch GmbH | 40953 |
2 |
| GM Global Technology Operations LLC | 13620 |
2 |
| Massachusetts Institute of Technology | 9795 |
2 |
| Aisin Seiki Kabushiki Kaisha | 2427 |
2 |
| Chevron U.S.A. Inc. | 3774 |
2 |
| Audi AG | 7153 |
2 |
| Other owners | 50 |