- All sections
- G - Physics
- G01L - Measuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure
- G01L 23/22 - Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid for detecting or indicating knocks in internal-combustion engines; Units comprising pressure-sensitive members combined with ignitors for firing internal-combustion engines
Patent holdings for IPC class G01L 23/22
Total number of patents in this class: 457
10-year publication summary
33
|
58
|
28
|
18
|
23
|
29
|
14
|
5
|
1
|
0
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Robert Bosch GmbH | 40953 |
37 |
Denso Corporation | 23338 |
31 |
Toyota Motor Corporation | 28582 |
22 |
Mitsubishi Electric Corporation | 43934 |
20 |
TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 13301 |
19 |
AI Alpine US Bidco Inc. | 107 |
17 |
citizen Finedevice Co., Ltd. | 59 |
15 |
Nippon Soken, Inc. | 363 |
14 |
SEM AB | 42 |
14 |
NGK Spark Plug Co., Ltd. | 935 |
12 |
citizen Watch Co., Ltd. | 1062 |
12 |
Continental Automotive France | 781 |
12 |
Vitesco Technologies GmbH | 2372 |
12 |
Continental Automotive GmbH | 5573 |
11 |
Kistler Holding AG | 338 |
11 |
GM Global Technology Operations LLC | 13620 |
9 |
citizen Holdings Co., Ltd. | 332 |
9 |
AI Alpine US Bidco LLC | 66 |
9 |
Niterra Co., Ltd. | 1122 |
9 |
Honda Motor Co., Ltd. | 24537 |
7 |
Other owners | 155 |