Granted Patent
Utility
US 5,684,587 · App. 08/677,381
Device and process for interferometric sizing of particles using spatial filtering of scattered radiation
Inventor:
Amir A. Naqwi
Patented Case
View Patent ↗
Granted: Nov 4, 1997
Filed: Jul 5, 1996
Inventor
Amir A. Naqwi
Assignee (at issue)
TSI Group Co., Ltd.
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.