Granted Patent
Utility
US 5,101,064 · App. 07/494,092
Production of terephthalate esters by degradative transesterification of scrap or virgin terephthalate polyesters
Inventors:
Louis Dupont, Ved P. Gupta
Patented Case
View Patent ↗
Granted: Mar 31, 1992
Filed: Mar 15, 1990
Inventors
Louis Dupont
Ved P. Gupta
Assignee (at issue)
Synergistics Industries, Inc.
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.