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:
Feb. 14, 1978
Filed:
Jun. 09, 1976
Applicant:
Inventors:
Emil W Deeg, Woodstock, CT (US);
David A Krohn, Southbridge, MA (US);
Assignee:
American Optical Corporation, Southbridge, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ; C03C / ; C03C / ; C03C / ;
U.S. Cl.
CPC ...
351169 ; 65 3 / ; 65 3 / ; 65 31 ; 65 37 ; 65 38 ; 65 6 / ; 65 6 / ; 65 61 ;
Abstract
Ophthalmic lenses with locally variable indices of refraction produced from microporous glass bodies diffused with inorganic salts and rendered transparent by heat treatment. Local variations in refractive index result from differences in concentrations of the salts produced by controlled diffusion and/or selective leaching after impregnation of the porous bodies.
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Deeg, Emil. (1978). Ophthalmic lens with locally variable index of refraction and method of (U.S. Patent No. 4073579). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4073579
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile