G03B 21/328
Means for fixing the film on the periphery of a reel
Official title: {Means for fixing the film on the periphery of a reel}
G03B21/328 (Means for fixing the film on the periphery of a reel) appears on 6 US grants and 4 published applications in this corpus.
Search patents in G03B- Granted patents
- 6
- Published applications
- 4
- Assignees
- 1
- Inventors
- 6
- Latest grant
- 26 May 2020
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| Year | Granted patents | Published applications |
|---|---|---|
| 2017 | 0 | 4 |
| 2018 | 1 | 0 |
| 2019 | 4 | 0 |
| 2020 | 1 | 0 |
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Recent patents
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- Film production method and film production device16 Jul 2019US 10,355,256 B2Sumitomo Chemical Company, Limited
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- Film production method and film production device2 Nov 2017US 2017/0317327 A1Sumitomo Chemical Company, Limited
- Method for manufacturing separator web, method for manufacturing separator, separator web, and apparatus for manufacturing separator web26 Oct 2017US 2017/0307542 A1Sumitomo Chemical Company, Limited
- Production method for separator sheet, production method for separator, separator sheet wound body, and separator sheet production device26 Oct 2017US 2017/0307543 A1Sumitomo Chemical Company, Limited
- Film production method and film production device26 Oct 2017US 2017/0307971 A1Sumitomo Chemical Company, Limited
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