Granted Patent
Utility
US 4,978,352 · App. 07/356,263
Process for producing collagen-based cross-linked biopolymer, an implant from said biopolymer, method for producing said implant, and method for hermetization of corneal or scleral wounds involved in eye injuries, using said implant
Inventors:
Svyatoslav N. Fedorov, Sergei Nikolayevich Bagrov, Vladislav T. Trofimov, Tatyana S. Amstislavskaya, Alexei V. Osipov
Patented Case
View Patent ↗
Granted: Dec 18, 1990
Filed: May 23, 1989
Inventors
Svyatoslav N. Fedorov
Sergei Nikolayevich Bagrov
Vladislav T. Trofimov
Tatyana S. Amstislavskaya
Alexei V. Osipov
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.