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:
Mar. 06, 2012
Filed:
Oct. 22, 2009
Applicants:
Takuma Yoshioka, Akita, JP;
Masaki Morikawa, Akita, JP;
Inventors:
Takuma Yoshioka, Akita, JP;
Masaki Morikawa, Akita, JP;
Assignee:
Japan Super Quartz Corporation, Akita-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
C03B 13/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A mold for the production of a silica crucible by heat-fusing silica or quartz powder attached onto an inner wall of a rotating mold, wherein a ring-shaped heat insulating barrier material having a specified inner diameter is disposed on an inner peripheral wall of an upper opening portion of the mold corresponding to an upper region of the silica crucible.