Process for treating plastics with alkaline permanganate solutions
US4629636A · kind A · utility
23Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1985 |
| Grant date | Dec 16, 1986 |
| Priority date | — |
| Expiry date | Oct 28, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2203/0796
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An improved alkaline permanganate composition for etching printed circuit boards is provided by incorporating a secondary oxidant in the solution capable of oxidizing manganate ion to permanganate ion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.