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:
Jun. 09, 2026
Filed:
May. 02, 2022
Applicant:
Hoya Corporation, Tokyo, JP;
Inventors:
Masafumi Miura, Chaing Mai Province, TH;
Kazuaki Hashimoto, Akiruno, JP;
Assignee:
HOYA CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03C 17/245 (2006.01); G11B 33/14 (2006.01);
U.S. Cl.
CPC ...
C03C 17/2453 (2013.01); G11B 33/1433 (2013.01); C03C 2217/211 (2013.01); C03C 2218/152 (2013.01); C03C 2218/365 (2013.01);
Abstract
A method for producing a ring-shaped object includes: placing a ring-shaped substrate on a plate; and spraying a gas containing a coating raw material toward a center hole of the ring-shaped substrate from above the ring-shaped substrate placed on the plate to cause the ring-shaped substrate to float up from the plate and form a film on a surface of the ring-shaped substrate.