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:
Jan. 10, 2006
Filed:
Apr. 01, 2004
Hironori Nishizawa, Nagano, JP;
Yasushi Hatakeyama, Nagano, JP;
Toshihisa Yoda, Nagano, JP;
Kenji Kawamura, Nagano, JP;
Hironori Nishizawa, Nagano, JP;
Yasushi Hatakeyama, Nagano, JP;
Toshihisa Yoda, Nagano, JP;
Kenji Kawamura, Nagano, JP;
Shinko Electric Industries Co., LTD, Nagano, JP;
Abstract
An optical cap for semiconductor device, the cap comprising: a metal cap body having an opening and a transparent optical window sealed with the metal cap body to cover the opening by means of a sealing member. The sealing member includes a bismuth low-melting point glass containing no lead, an intermediate metal layer attached to the metal cap body, the intermediate metal layer being a metal capable of causing a eutectic reaction with respect to Bi contained in the low-melting point glass, and an eutectic alloy layer thus formed between the low-melting point glass and the intermediate metal layer.