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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.:

US 4749255 B1

PDFFull Text
Date of Patent:
Jun. 07, 1988

Filed:

Dec. 09, 1985

Coating for optical devices

Applicant:
Inventors:

Utpal K Chakrabarti, North Plainfield, NJ (US);

Aland K Chin, Berkeley Heights, NJ (US);

George J Przybylek, South Plainfield, NJ (US);

LeGrand G Van Uitert, Morristown, NJ (US);

George J Zydzik, Columbia, NJ (US);

Assignee:

American Telephone and Telegraph Company, AT&T Bell Laboratories, Murray Hill, NJ (US);

Attorney:

Birnbaum; Lester H.

Primary Examiner:

Bruce Y Arnold

Assistant Examiner:

Terry S Callaghan

Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350164 ; 350166 ;
Abstract

Disclosed is a device including a surface coating for passivation or anti-reflection, and a method of manufacture. The coating comprises ZrO.sub.2 doped with yttrium, magnesium or calcium. The doped ZrO.sub.2 is preferably deposited on the device surface by electron-beam evaporation from a single crystal source of ZrO.sub.2 and Y.sub.2 O.sub.3, MgO or CaO.

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Chakrabarti, Utpal. (1988). Coating for optical devices (U.S. Patent No. 4749255). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4749255

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