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:
Jun. 30, 1992
Filed:
Mar. 29, 1991
Shin-Etsu Handotai Co., Ltd., Tokyo, JP;
Abstract
An apparatus for producing a single crystal ingot grown by the Czochralski method includes a plurality of grip arms each having a grip finger engageable with a downwardly facing engagement step formed on an upper part of the single crystal, and a ring slidably fitted around a plurality of grip arms to hold the grip arms in a closed position in which the engagement step of the single crystal is firmly gripped by the grip fingers against detachment. The apparatus having such a ring is particularly advantageous when used for the production of a heavy single crystal ingot in which the grip arms are forced to spread apart by the weight of the single crystal ingot.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile