- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F04B - Positive-displacement machines for liquids; pumps
- F04B 49/03 - Stopping, starting, unloading or idling control by means of valves
Patent holdings for IPC class F04B 49/03
Total number of patents in this class: 251
10-year publication summary
|
11
|
25
|
20
|
23
|
23
|
20
|
17
|
16
|
10
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Halliburton Energy Services, Inc. | 20438 |
8 |
| Illinois Tool Works Inc. | 11399 |
7 |
| Artemis Intelligent Power Limited | 105 |
7 |
| Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | 1408 |
6 |
| Robert Bosch GmbH | 41786 |
5 |
| Dresser-Rand Company | 217 |
5 |
| Caterpillar Inc. | 9166 |
4 |
| Carrier Corporation | 4451 |
4 |
| Atlas Copco Airpower, naamloze vennootschap | 984 |
4 |
| Graco Minnesota Inc. | 1163 |
4 |
| Quincy Compressor LLC | 32 |
4 |
| Diinef AS | 5 |
4 |
| Continental Reifen Deutschland GmbH | 2424 |
3 |
| Bendix Commercial Vehicle Systems LLC | 867 |
3 |
| Gen-Probe Incorporated | 999 |
3 |
| HOERBIGER Kompressortechnik Holding GmbH | 25 |
3 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2906 |
3 |
| Murata Manufacturing Co., Ltd. | 23702 |
2 |
| Hyundai Motor Company | 20483 |
2 |
| Siemens Energy, Inc. | 1731 |
2 |
| Other owners | 168 |