Method of creating pores in a thin sheet of polyimide
US7419612B2 · kind B2 · utility
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20References
20Claims
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Assignee
Inventors
Key dates
| Filing date | May 18, 2005 |
| Grant date | Sep 2, 2008 |
| Priority date | — |
| Expiry date | Sep 20, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2325/0212
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention concerns a method which consists in first subjecting the polyimide sheet to ionic bombardment, followed by an irradiation in the visible domain and finally a relatively brief chemical etching. Said method enables a thin polyimide sheet comprising pores, of nanometric to micrometric size, having a substantially cylindrical shape and substantially equal diameters to be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.