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:
Mar. 13, 2007
Filed:
Mar. 18, 2003
Applicant:
Robert D. Tolles, San Jose, CA (US);
Inventor:
Robert D. Tolles, San Jose, CA (US);
Assignee:
Applied Materials, Inc., Santa Clara, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B24B 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The polishing pad for a chemical mechanical polishing apparatus and method of making the same has a polishing pad with a bottom layer, a polishing surface on a top layer and a transparent sheet of material interposed between the two layers. Slurry from the chemical mechanical polishing process is prevented from penetrating the impermeable transparent sheet to the bottom layer of the polishing pad.