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:
Sep. 05, 1989
Filed:
Oct. 17, 1988
Barret Lippey, Los Angeles, CA (US);
Hughes Aircraft Company, Los Angeles, CA (US);
Abstract
A method of bonding molybdenum and zinc sulfide devices (10, 12) together comprising the steps of lapping the surface of the nickel layers to about a 20,000 Angstrom smoothness, placing nickel layers (16, 16') of about 700 Angstroms respectively on the devices, plating layers of gold (18, 18') of about 4 microns thickness respectively on the nickel layers, respectively immersing the gold-plated layers in a bath (20) of mercury, inverting one (10) of the devices above the other (12), bringing the devices together to effect contact between the mercury films (22, 22'), pressing the devices together within a pressure range of 2 kilograms per square inch to 20 kilograms per square inch for a minimum of 16 hours at room temperature, and sealing the periphery of the gold-mercury seal contact with a nickel seal (26).