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:
Dec. 15, 2009
Filed:
Oct. 28, 2005
Michael T. Phenis, Markleville, IN (US);
Lauri Kirby Kirkpatrick, Pittsboro, IN (US);
Raymond Chan, Carmel, IN (US);
Diane Marie Scheele, Greenwood, IN (US);
Kimberly Dona Pollard, Anderson, IN (US);
Gene Goebel, Danville, CA (US);
Michael T. Phenis, Markleville, IN (US);
Lauri Kirby Kirkpatrick, Pittsboro, IN (US);
Raymond Chan, Carmel, IN (US);
Diane Marie Scheele, Greenwood, IN (US);
Kimberly Dona Pollard, Anderson, IN (US);
Gene Goebel, Danville, CA (US);
Dynaloy, LLC, Indianapolis, IN (US);
Abstract
Improved stripper solutions for removing photoresists from substrates are provided that typically have freezing points below about +15° C. and high loading capacities. The stripper solutions comprise dimethyl sulfoxide, a quaternary ammonium hydroxide, and an alkanolamine having at least two carbon atoms, at least one amino substituent and at least one hydroxyl substituent, the amino and hydroxyl substituents attached to two different carbon atoms. Some formulation can additionally contain a secondary solvent. Methods for use of the stripping solutions are additionally provided.