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.

Date of Patent:
Aug. 06, 2024

Filed:

Jul. 06, 2020
Applicant:

Sumitomo Chemical Company, Limited, Tokyo, JP;

Inventors:

Fumimasa Horikiri, Hitachi, JP;

Noboru Fukuhara, Hitachi, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25F 3/12 (2006.01); C25F 7/00 (2006.01); H01L 21/3063 (2006.01);
U.S. Cl.
CPC ...
C25F 3/12 (2013.01); C25F 7/00 (2013.01); H01L 21/30635 (2013.01);
Abstract

A method for manufacturing a structure, including photoelectrochemically etching an etching object, the photoelectrochemical etching of the etching object including: injecting an alkaline or acidic etching solution containing an oxidizing agent that receives electrons, into a rotatably held container in which an etching object at least whose surface is composed of group III nitride is held, and immersing the surface in the etching solution; irradiating the surface of the etching object held in the container with light in a stationary state of the etching object and the etching solution; and rotating the container to scatter the etching solution toward an outer peripheral side, thereby discharging the etching solution from the container, after the surface is irradiated with the light.


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