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:
Aug. 20, 2013
Filed:
Jun. 01, 2009
Hiromasa Tokudome, Chigasaki, JP;
Koji Okubo, Fujisawa, JP;
Kyoko Kataoka, Chigasaki, JP;
Saori Sonokawa, Chigasaki, JP;
Hiroyuki Fujii, Chigasaki, JP;
Hiromasa Tokudome, Chigasaki, JP;
Koji Okubo, Fujisawa, JP;
Kyoko Kataoka, Chigasaki, JP;
Saori Sonokawa, Chigasaki, JP;
Hiroyuki Fujii, Chigasaki, JP;
Toto Ltd., Fukuoka-ken, JP;
Abstract
A self-cleaning member comprising a member having a porous surface is disclosed. The member has a contact angle hysteresis Δθ (=θa−θr), which is a difference between an advancing contact angle θa and a receding contact angle θr measured by a dynamic contact angle measurement with an extension/contraction method, of 80 degree or more at the surface layer and a receding contact angle θr of 25 degree or less, is capable of forming a water film on the surface by water provided and of allowing an ionic or reactive contaminant to be washed away without fixation.