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:
Oct. 18, 1994
Filed:
Dec. 23, 1992
Applicant:
Inventors:
John A Yearn, Palos Heights, IL (US);
Tetsuro Sakuma, Tokorozawa, JP;
Assignee:
GC Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ; C08J / ;
U.S. Cl.
CPC ...
523116 ; 523115 ; 523117 ;
Abstract
A composition for dental restorative material comprises a methacrylate or acrylate monomer, a specific organic/inorganic composite filler, a specific glass powder component having a specific particle diameter, a fine-particle filler having a specific particle diameter and a photopolymerization initiator, this composition being as excellent in surface smoothness as natural teeth, is less shrinkable by polymerization so that no gap can occur between the restorative material and the tooth having roentgenographic properties.