- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F17B - Gas-holders of variable capacity
- F17B 1/18 - Gas-holders of variable capacity of wet type bell-shaped
Patent holdings for IPC class F17B 1/18
Total number of patents in this class: 1
10-year publication summary
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2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Sumitomo Seika Chemicals Co., Ltd. | 1028 |
1 |
Other owners | 0 |