Granted Patent
Utility
US 5,227,487 · App. 07/509,360
Certain tricyclic and pentacyclic-hetero nitrogen rhodol dyes
Inventors:
Richard P. Haugland, James E. Whitaker
Patented Case
View Patent ↗
Granted: Jul 13, 1993
Filed: Apr 16, 1990
Inventors
Richard P. Haugland
James E. Whitaker
Assignee (at issue)
Molecular Probes, 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.