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. 22, 1987
Filed:
Jul. 15, 1983
Hatsuo Takezawa, Yokohama, JP;
Kenichi Donuma, Koshigaya, JP;
Shuhei Katagiri, Tokyo, JP;
Shigeyuki Sakura, Yokohama, JP;
Tokyo Shibaura Denki Kabushiki Kaisha, Kawasaki, JP;
Abstract
A duplex optical communication module unit is disclosed, which comprises a ceramic substrate and first and second metal shells having respective transparent window members and hermetically bonded to the ceramic substrate so as to define a first and second space, respectively. A light-emitting element is assembled in the first space, and a light-emitting element and a circuit element for amplifying the photocurrent from the light-emitting element are assembled in the second space. Metallization layers are formed on the ceramic substrate over a substantial area thereof, light-receiving and light-transmitting sections being shielded by the metallization layers and metal shells.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile