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. 20, 1990
Filed:
Apr. 11, 1989
Applicant:
Inventor:
Dominic A Cusano, Schenectady, NY (US);
Assignee:
Pacific Bell, San Francisco, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B44C / ; C23F / ; C03C / ; C03C / ;
U.S. Cl.
CPC ...
156643 ; 156652 ; 1566591 ; 156666 ; 156902 ; 156345 ; 21912169 ; 21912185 ; 427 531 ; 427 96 ;
Abstract
A system and method for improved conductive circuit patterning utilizing laser ablation is disclosed. In an embodiment, a substrate, which has an electroless conductive layer plated thereon, is heated to a predetermined temperature for a predetermined time to form an oxide layer upon the conductive layer. The oxide layer, due to its non-absorptive properties, is more easily ablated than the conductive layer. Hence, the overall processing time for circuit patterning is significantly reduced.