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:
Jun. 20, 1989
Filed:
Jan. 25, 1988
Applicant:
Inventors:
Roger W Phillips, Santa Rosa, CA (US);
Vernon C Spellman, Santa Rosa, CA (US);
Wayne L Gossett, Santa Rosa, CA (US);
Marc A Kamerling, Santa Rosa, CA (US);
Paul G Coombs, Santa Rosa, CA (US);
Assignee:
Optical Coating Laboratory, Inc., Santa Rosa, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
B65D / ;
U.S. Cl.
CPC ...
215230 ; 206459 ; 229102 ; 350166 ;
Abstract
Tamper evident optical device having at least first and second layers with a spacer layer therebetween and providing a desired optical property. A release layer is disposed between the first and second layers which permits the first and second layers to be separated from each other and to destroy the desired optical property.