HOLLOW CARBON FIBERS
Assignee
KETEMA, INC.
Filed
Apr 22, 1991
Granted
Aug 16, 1994
Location
CARSON CITY NV US
Abstract
Hollow carbon and graphite filaments having a specific gravity of about 20-50% less than conventional solid carbon fibers made of the same precursor resin are formed by spinning hollow precursor resin filaments. These low density hollow carbon filaments have improved insulating properties compared with conventional solid carbon fibers and have an excellent bending strength to weight ratio.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Aug 28, 1992
Rescinded
Jul 13, 1993
Duration
10 months
Inventor
- 1ROBERT L. NOLAND
Record Details
- Patent number
- US 5338605
- Application
- 00768841
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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