Granted Patent
Utility
US 6,235,870 · App. 09/408,040
Dehydrohalogenation of poly (phenylhalo-b-hydroxypropyl ether) to form polyepoxide
Inventors:
Jozef Jacobus Titus Smits, Judith Johanna Berendina Walhof
Patented Case
View Patent ↗
Granted: May 22, 2001
Filed: Sep 29, 1999
Inventors
Jozef Jacobus Titus Smits
Judith Johanna Berendina Walhof
Assignee (at issue)
SHELL OIL COMPANY
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.