Granted Patent
Utility
US 5,656,719 · App. 08/601,580
Condensation injection molding process for producing bottle preforms of polyethylene terephthalate and/or its copolyesters and resultant preforms
Inventors:
Werner Stibal, Werner Kaegi, Joachim Ensinger, Klaus Nothhelfer
Patented Case
View Patent ↗
Granted: Aug 12, 1997
Filed: Feb 14, 1996
Inventors
Werner Stibal
Werner Kaegi
Joachim Ensinger
Klaus Nothhelfer
Assignee (at issue)
EMS-Inventa AG
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.