The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 20, 2010
Filed:
Jan. 12, 2009
Wafer/ingot cleaning in wire saw cutting comprising an ethoxylated alcohol/polyalkylsiloxane mixture
Applicant:
Irl E. Ward, Bethlehem, PA (US);
Inventor:
Irl E. Ward, Bethlehem, PA (US);
Assignee:
PPT Research, Allentown, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C11D 1/72 (2006.01); C11D 9/36 (2006.01);
U.S. Cl.
CPC ...
Abstract
There is provided a method and composition for rinsing sliced ingots into wafers from a wire saw cutting operation. The method uses an alkoxylated alcohol diluted in water alone or with a polyalkyl siloxane when the bath has a dynamic flow of water to prevent foaming.