Granted Patent
Utility
US 6,562,776 · App. 09/559,841
Solid alkylbenzene sulfonates and cleaning compositions having enhanced water hardness tolerance
Inventors:
George A. Smith, Samir S. Ashrawi, Raeda M. Smadi, Prakasa Rao Anantaneni
Patented Case
View Patent ↗
Granted: May 13, 2003
Filed: Apr 26, 2000
Inventors
George A. Smith
Samir S. Ashrawi
Raeda M. Smadi
Prakasa Rao Anantaneni
Assignee (at issue)
HUNTSMAN PETROCHEMICAL LLC
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.