Granted Patent
Utility
US 5,331,065 · App. 08/088,314
Process for preparing high molecular weight polyethylene-terephthalate from recycled polyethyleneterephthalate
Inventors:
Riccardo Po', Nicoletta Cardi, Luisa Fiocca, Antonio Gennaro, Giorgio Giannotta, Ernesto Occhiello
Patented Case
View Patent ↗
Granted: Jul 19, 1994
Filed: Jul 7, 1993
Inventors
Riccardo Po'
Nicoletta Cardi
Luisa Fiocca
Antonio Gennaro
Giorgio Giannotta
Ernesto Occhiello
Assignees (at issue)
Eniricerche S.p.A.
Enichem S.p.A
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.