Granted Patent
Utility
US 6,806,362 · App. 09/813,077
pH dependent ion exchange matrix and method of use in the isolation of nucleic acids
Inventors:
Craig E. Smith, Diana L. Holmes, Daniel J. Simpson, Jehoshua Katzenhendler, Rex M. Bitner, Josephine Grosch
Patented Case
View Patent ↗
Granted: Oct 19, 2004
Filed: Mar 20, 2001
Inventors
Craig E. Smith
Diana L. Holmes
Daniel J. Simpson
Jehoshua Katzenhendler
Rex M. Bitner
Josephine Grosch
Assignee (at issue)
Promega Corporation
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.