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:
Jan. 26, 2016
Filed:
Dec. 15, 2009
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);
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);
Dynaloy, LLC, Kingsport, TN (US);
Abstract
Methods for using improved stripper solutions having dimethyl sulfoxide; a quaternary ammonium hydroxide; an alkanolamine having at least two carbon atoms, at least one amino substituent and at least one hydroxyl substituent, with the amino and hydroxyl substituents being attached to two different carbon atoms; and a surfactant. Some formulation can additionally contain a secondary solvent. The stripper solutions are effective for removing photoresists from substrates, and typically have freezing points below about +15° C. and high loading capacities.