Granted Patent
Utility
US 6,017,766 · App. 09/014,387
Process for measuring concentration of nonionic surfactants in an aqueous alkaline solution
Inventors:
Rodica Holt, Joseph E. Oberlander, Eleazar Gonzalez, Pilarcita Ranque, Maria F. Y. Calindas
Patented Case
View Patent ↗
Granted: Jan 25, 2000
Filed: Jan 28, 1998
Inventors
Rodica Holt
Joseph E. Oberlander
Eleazar Gonzalez
Pilarcita Ranque
Maria F. Y. Calindas
Assignee (at issue)
Clariant Finance (BVI) Limited
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.