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. 22, 2012
Filed:
Mar. 23, 2007
Keisuke Ohtsuka, Fukuoka, JP;
Yoshifumi Miyano, Fukuoka, JP;
Hirokazu Tanaka, Kitakyushu, JP;
Eiko Tanaka, Legal Representative, Kitakyushu, JP;
Keisuke Ohtsuka, Fukuoka, JP;
Yoshifumi Miyano, Fukuoka, JP;
Hirokazu Tanaka, Kitakyushu, JP;
Eiko Tanaka, legal representative, Kitakyushu, JP;
JGC Catalysts and Chemicals Ltd., Kanagawa, JP;
Abstract
The present invention provides dental fillers having the optical and/or mechanical characteristics required to dental materials, a method of producing the same, and a dental composite material prepared with use of the dental filler. More specifically, the present invention provides a dental filler containing a zirconium silicate compound, especially a zirconium trisilicate compound with a wadeite type crystalline structure and having an average particle diameter in the range from 2 to 50,000 nm, a method of producing the same, a dental composite material containing the dental filler and a hardenable resin selected from an acrylic resin, a methacrylic resin, an epoxy resin, a vinyl resin, a urethane resin and the like.