US 5508239
HIGH STRENGTH ALUMINUM NITRIDE FIBERS AND COMPOSITES AND PROCESSES FOR THE PREPARATION THEREOF
Assignee
E. I. DU PONT DE NEMOURS AND COMPANY
Filed
Sep 7, 1990
Granted
Apr 16, 1996
Location
LANDENBERG PA US
Abstract
Shaped articles of polycrystalline aluminum nitride are disclosed having a tensile strength of at least about 100 Kpsi. The shaped articles are preferably fibers. Composites of polycrystalline AlN fibers in a matrix of organic or inorganic polymer, metal, glass or ceramic are also disclosed herein. The process for the preparation of polycrystalline aluminum nitride fibers is covered.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Jun 24, 1991
Rescinded
Aug 24, 1995
Duration
4 years, 2 months
Inventor
- 1JOHN D. BOLT
Record Details
- Patent number
- US 5508239
- Application
- 07578408
- Aerospace match
- No
- Dataset source
- 35 USC §181 SO records
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Back to patent indexSource: USPTO 35 USC §181 secrecy order records