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:
Mar. 27, 1990
Filed:
Aug. 18, 1988
Applicant:
Inventors:
Assignee:
G-C Dental Industiral Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61C / ; B28B / ; C04B / ;
U.S. Cl.
CPC ...
106111 ; 106 35 ; 106109 ; 106110 ; 106116 ; 4331991 ; 433213 ; 433214 ;
Abstract
A dental gypsum composition in the low-dusting powdery form contains (a) hemihydrate gypsum, (b) a setting controlled agent comprising one or more of setting accelerators, setting retarders and setting expansion inhibitors, (c) one or more wetting agents selected from the group consisting of liquid hydrophobic hydrocarbons, liquid hydrophobic fatty acid esters and liquid hydrophobic fatty acids showing a vapor pressure of 3.15 mmHg or below at 20.degree. C., and (d) one or more anionic surface active agents selected from the group consisting of alkylbenzene sulfonates and alkyl sulfates.