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:
Aug. 23, 2005
Filed:
Aug. 17, 2004
Applicants:
Valoris L. Forsyth, Lewisville, TX (US);
Sandrine Charrier, Stockbridge, GB;
Inventors:
Valoris L. Forsyth, Lewisville, TX (US);
Sandrine Charrier, Stockbridge, GB;
Assignee:
Illinois Tool Works Inc., Glenview, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B003/02 ; H01L021/30 ;
U.S. Cl.
CPC ...
Abstract
A separator of semiconductor wafers is made from polyethylene with a dissipative material and includes a first and second set of embossed cut perpendicular lines. The first set is typically parallel to the second set, and each set includes pairs of cut lines which are spaced from adjacent pairs. The depth of grid lines cut into the material allows air flow, circulation and vacuum release.