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:
May. 11, 1993
Filed:
Dec. 18, 1991
Applicant:
Inventors:
Assignee:
Shin-Etsu Handotai Company Limited of Japan, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C30B / ; C30B / ;
U.S. Cl.
CPC ...
156603 ; 1566202 ; 437248 ;
Abstract
A heat-treating method for an indium-doped dislocation-free gallium arsenide monocrystal having a low carbon concentration and grown in the Liquid Encapsulated Czochralski method, comprising a two-step heat treatment: