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:
Feb. 20, 2007
Filed:
Jan. 18, 2005
Yuji Kato, Okazaki, JP;
Naoyuki Ishii, Okazaki, JP;
Kaname Hase, Okazaki, JP;
Tokai Kogaku Co., Ltd., , JP;
Abstract
A plastic lens of a multilayer film structure forms an organosiloxane-based hard coating film formed on a surface of a lens substrate as a first layer, an inorganic oxide-based antireflection film formed on the hard coating film as a second layer, and a water-repellent thin film obtained by polycondensing an organosilicon compound and formed on the antireflection film as a third layer, pencil hardness of the surface of the lens on which these plural layer films are formed being from 3H to 7H, and an initial falling angle of oleic acid on the surface of the lens on which these plural layer films are formed being 20° or less.