Granted Patent
Utility
US 4,476,345 · App. 06/434,398
N-Paraffin-isoparaffin separation process using wash of recycle purge gas
Inventors:
Robert L. Gray, Thomas C. Holcombe
Patented Case
View Patent ↗
Granted: Oct 9, 1984
Filed: Oct 14, 1982
Inventors
Robert L. Gray
Thomas C. Holcombe
Assignee (at issue)
Union Carbide 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.