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. 04, 1992
Filed:
Dec. 29, 1989
Eiichi Masuhara, Tokyo, JP;
Shigeo Komiya, Urawa, JP;
Takeyuki Sawamoto, Tokyo, JP;
Shusuke Kimura, Yono, JP;
Koji Ozeki, Yono, JP;
Kensuke Nakajima, Yono, JP;
Kiyomi Sanbonmatsu, Yono, JP;
Noboru Nishiyama, Yono, JP;
Japan Institute of Advanced Dentistry, Tokyo, JP;
Abstract
A method and apparatus to continuously harden articles made of visible light-curable resins, including continuously moving the articles to be hardened relative to a multiplicity of sources of visible light which are independently controllable to be able to vary the radiation to which the articles is exposed during its passage while independently controlling the temperature at which this takes place; and apparatus to accomplish this such that a large number of the objects to be irradiated passing through the hardening apparatus have the same exposure history to the visible light and to heating or cooling respectively. As the result, there is substantially no variation in the physical properties of these photo-polymerized products.