Granted Patent
Utility
US 6,167,435 · App. 09/183,365
Double opt-in.TM. method and system for verifying subscriptions to information distribution services
Inventors:
Ryan Scott Druckenmiller, Rosalind Resnick
Patented Case
View Patent ↗
Granted: Dec 26, 2000
Filed: Oct 30, 1998
Inventors
Ryan Scott Druckenmiller
Rosalind Resnick
Assignee (at issue)
Netcreations, Inc.
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.