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:
Nov. 02, 1993
Filed:
May. 03, 1991
Gnanalingam Arjavalingam, Yorktown Heights, NY (US);
Alina Deutsch, Chappaqua, NY (US);
Fuad E Doany, Katonah, NY (US);
Bruce K Furman, Beacon, NY (US);
Donald J Hunt, Pine Bush, NY (US);
Chandrasekhar Narayan, Hopewell Junction, NY (US);
Modest M Oprysko, Mahopac, NY (US);
Sampath Purushothaman, Yorktown Heights, NY (US);
Vincent Ranieri, Tarrytown, NY (US);
Stephen Renick, Mahopac, NY (US);
Jane M Shaw, Ridgefield, CT (US);
Janusz S Wilczynski, Ossining, NY (US);
David F Witman, Pleasantville, NY (US);
IBM Corporation, Armonk, NY (US);
Abstract
A method and apparatus for releasing a workpiece from a substrate including providing a substrate which is transparent to a predetermined wavelength of electromagnetic radiation; forming, on the substrate, a separation layer which degrades in response to the predetermined radiation; providing the workpiece on the separation layer; and directing the predetermined radiation at the separation layer through the transparent substrate so as to degrade the separation layer and to separate the workpiece from the substrate.