- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16N - Lubricating
- F16N 23/00 - Special adaptations of check valves
Patent holdings for IPC class F16N 23/00
Total number of patents in this class: 62
10-year publication summary
1
|
10
|
6
|
6
|
9
|
8
|
2
|
1
|
7
|
3
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Pratt & Whitney Canada Corp. | 4215 |
5 |
Ahwon Corporation | 14 |
5 |
Zhengzhou Autol Technology Co., Ltd. | 16 |
5 |
Magna Powertrain Inc. | 120 |
3 |
Hanon Systems EFP Canada Ltd. | 65 |
3 |
Kawasaki Heavy Industries, Limited | 1524 |
2 |
Dana Canada Corporation | 284 |
2 |
Stackpole International Engineered Products, Ltd. | 46 |
2 |
Zhejiang Sanhua Automotive Components Co., Ltd. | 230 |
2 |
Mitsubishi Heavy Industries, Ltd. | 8217 |
1 |
Toshiba Corporation | 12017 |
1 |
GM Global Technology Operations LLC | 13620 |
1 |
Makita Corporation | 2339 |
1 |
ABB Oy | 178 |
1 |
Autol Technology Co., Ltd | 4 |
1 |
Compressor Products International LLC | 31 |
1 |
Cool Tech Co., Ltd. | 5 |
1 |
Curtis ROYS | 2 |
1 |
ElringKlinger AG | 487 |
1 |
Graco Minnesota Inc. | 1124 |
1 |
Other owners | 22 |