Granted Patent
Utility
US 5,688,155 · App. 08/377,467
Carbon--carbon composites containing poorly graphitizing pitch as a binder and/or impregnant
Inventors:
Irwin C. Lewis, Ronald A. Howard
Patented Case
View Patent ↗
Granted: Nov 18, 1997
Filed: Jan 24, 1995
Inventors
Irwin C. Lewis
Ronald A. Howard
Assignee (at issue)
UCAR Carbon Technology Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.