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. 11, 1992
Filed:
Sep. 21, 1989
Applicant:
Inventors:
Oswald Gasser, Seefeld, DE;
Klaus Ellrich, Worthsee, DE;
Assignee:
ESPE Stiftung & Co. Produktions-und Vertriebs KG, Seefeld, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61C / ; B28B / ;
U.S. Cl.
CPC ...
264 39 ; 264 16 ; 264338 ; 264340 ; 427-2 ; 427133 ;
Abstract
The invention relates to a process for the treatment of dental impressions of conventional molding material, in which the surface of the impressions is treated prior to filling with plaster with an aqueous solution which contains 0.01 to 10 % by weight of a fluorine compound. The detrimental effect which the surface-active substances adhering to the dental impressions have on the surface finish of the plaster models which are produced using the dental impressions is thus eliminated.