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. 14, 1992
Filed:
May. 10, 1990
Mitsubishi Materials Corporation, Tokyo, JP;
Abstract
A crystal growing apparatus includes a crucible, a feed pipe and a pulling mechanism. The crucible serves to melt a crystalline material. The feed pipe serves to cause the crystalline material to fall into the crucible to charge the crucible with the crystalline material. The pulling mechanism serves to pull a single-crystal from the molten material in the crucible. The feed pipe has a lower end positioned slightly above the surface of the molten material in the crucible and including a plurality of baffle plates mounted on an inner peripheral wall thereof in longitudinally spaced relation to one another. The baffle plates are arranged so that a pitch defined between adjacent two baffle plates decreases toward the lower end of the feed pipe.