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:
Sep. 02, 2025
Filed:
Mar. 13, 2023
Applicant:
Hoya Corporation, Tokyo, JP;
Inventors:
Shuhei Azuma, Hung Yen, VN;
Toshio Takizawa, Yamanashi, JP;
Assignee:
HOYA CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 3/00 (2006.01); C03C 23/00 (2006.01); G11B 5/73 (2006.01); G11B 5/84 (2006.01);
U.S. Cl.
CPC ...
G11B 5/73921 (2019.05); B32B 3/00 (2013.01); C03C 23/0025 (2013.01); G11B 5/8404 (2013.01);
Abstract
A disk-shaped glass substrate manufacturing method for manufacturing a glass substrate () includes preparing a disk-shaped glass blank having main surfaces () and an outer circumferential end face (), and irradiating the disk-shaped glass blank with a laser beam (L) along a distance longer than one lap of the outer circumferential end face () of the disk-shaped glass blank.
Azuma, Shuhei. (2025). Magnetic disk-use glass substrate manufacturing method, discoidal glass substrate, glass substrate, and magnetic disk-use glass substrate (U.S. Patent No. 12406694). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12406694
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile