BN Bonded BN fiber article from boric oxide fiber
US4130631A · kind A · utility
7Cited by
5References
32Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 2, 1977 |
| Grant date | Dec 19, 1978 |
| Priority date | — |
| Expiry date | Mar 2, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/42
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A boron nitride bonded boron nitride fiber article and the method for its manufacture which comprises forming a shaped article with a composition comprising boron oxide fibers and boric acid, heating the composition in an anhydrous gas to a temperature above the melting point of the boric acid and nitriding the resulting article in ammonia gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.