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. 09, 1990
Filed:
Oct. 28, 1988
Bertalan J Vegh, Fairport, NY (US);
Laurel J Pace, Rochester, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A process for stripping a color filter array coating from a substrate of a solid-state color image sensing device to recover the substrate so that it subsequently can be used to produce another solid-state color image sensing device, such process comprising contacting the coating with a stripping solution comprising chromic acid and sulfuric acid for a time effective to remove the coating from the substrate. The process efficiently removes all of the coating, even when the coating has been baked and hardened by various processing steps, and does not adversely affect the electrical properties of the device, the exposed bond pads, or the backside of the wafer.