US 5202072
PITCH CARBON FIBER SPINNING PROCESS
Assignee
E. I. DU PONT DE NEMOURS AND COMPANY, A CORP. OF DE
Filed
Oct 31, 1990
Granted
Apr 13, 1993
Location
CHATTANOOGA TN US
Abstract
Use of a ribbon shaped flow configuration at the entrance to a round spinneret used for spinning carbon fibers from mesophase pitch promotes the formation of random microstructure and prevents formation of axial cracking in the fibers.
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Oct 8, 1991
Rescinded
Dec 27, 1991
Duration
2 months
Inventor
- 1ROGER A. ROSS
Record Details
- Patent number
- US 5202072
- Application
- 07606675
- Aerospace match
- No
- Dataset source
- 35 USC §181 SO records
Browse by Assignee
E. I. DU PONT DE NEMOURS AND COMPANY, A CORP. OF DEBack to patent indexSource: USPTO 35 USC §181 secrecy order records