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:
Aug. 13, 2013
Filed:
Oct. 28, 2009
Applicants:
Masanori Fukui, Akita, JP;
Satoshi Kudo, Tokyo, JP;
Inventors:
Masanori Fukui, Akita, JP;
Satoshi Kudo, Tokyo, JP;
Assignee:
Japan Super Quartz Corporation, Akita, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C30B 15/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A silica glass crucible for pulling up a silicon single crystal including a wall part and a bottom part is provided with a natural silica glass layer which forms at least one part of a an inner surface of the bottom part, and a synthetic silica glass layer which forms at least an inner surface of the wall part, wherein a concentration of Ca included in the natural silica glass layer is 0.5 ppm or less.
Fukui, Masanori. (2013). Silica glass crucible for pulling up silicon single crystal, method for manufacturing thereof and method for manufacturing silicon single crystal (U.S. Patent No. 8506708). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8506708
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile