Granted Patent
Utility
US 5,369,135 · App. 07/882,466
Controlled microcellular foams of crystalline amorphous polymers
Inventors:
Gregory A. Campbell, Don H. Rasmussen
Patented Case
View Patent ↗
Granted: Nov 29, 1994
Filed: May 13, 1992
Inventors
Gregory A. Campbell
Don H. Rasmussen
Assignee (at issue)
Mobil Oil 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.