Method of rendering polymeric materials hydrophilic for etching
US4917761A · kind A · utility
5Cited by
9References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 14, 1989 |
| Grant date | Apr 17, 1990 |
| Priority date | — |
| Expiry date | Aug 14, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2203/0783
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is a method of rendering polymeric materials hydrophilic by treating the material sequentially with different solvents. The method is especially useful in the preparation of polymeric substrates for etching.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.