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:
May. 09, 2017
Filed:
Jan. 17, 2012
Yukio Eda, Shibukawa, JP;
Toshiyuki Ibayashi, Shibukawa, JP;
Hiroyuki Kurimura, Shibukawa, JP;
DENKA COMPANY LIMITED, Tokyo, JP;
Abstract
There is provided an ultrasonic cleaning method capable of reliably cleaning to remove adhesive components even when the adhesive components adhere to a rigid substrate. The ultrasonic cleaning method comprises performing the following steps (1) to (5), in this order: (1) a step of immersing a rigid substrate having an adhesive adhering to a surface thereof in an aromatic alcohol-based cleaning liquid at 25 to 60° C.; (2) a step of cleaning off the adhesive on the rigid substrate by ultrasonic oscillation while keeping the state where the rigid substrate is immersed in the step (1); (3) a step of subsequently immersing the rigid substrate in a glycol ether-based cleaning liquid at 25 to 60° C.; (4) a step of rinsing off the aromatic alcohol-based cleaning liquid adhering to the rigid substrate by ultrasonic oscillation while keeping the state where the rigid substrate is immersed in the step (3); and (5) a step of subsequently rinsing off the glycol ether-based cleaning liquid and aromatic alcohol-based cleaning liquid adhering to the rigid substrate with water.