Granted Patent
Utility
US 5,977,415 · App. 09/136,974
Preparation of 3, 3-dimethylbutyraldehyde from a tert-butyl cation precursor, vinyl chloride and an acidic catalyst
Inventors:
Indra Prakash, Zhi Guo
Patented Case
View Patent ↗
Granted: Nov 2, 1999
Filed: Aug 20, 1998
Inventors
Indra Prakash
Zhi Guo
Assignee (at issue)
The NutraSweet 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.