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:
Feb. 04, 2025
Filed:
Jun. 09, 2022
Applicant:
Shin-etsu Quartz Products Co., Ltd., Tokyo, JP;
Inventors:
Assignee:
SHIN-ETSU QUARTZ PRODUCTS CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03C 15/00 (2006.01); C23C 16/455 (2006.01);
U.S. Cl.
CPC ...
C03C 15/00 (2013.01); C23C 16/45544 (2013.01);
Abstract
Provided is a silica glass disc in which the deformation amount thereof in heat treatment is minimized, and the surface area of a silica glass surface can be increased. There is provided a silica glass disc, including a dimple forming area in which a large number of dimples are formed on at least one of a front surface or a back surface of a silica glass body, and the dimples in the dimple forming area are regularly formed. It is preferred that the dimples be formed by a laser.