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:
Jan. 07, 1992
Filed:
Aug. 10, 1990
Applicant:
Inventor:
Daryl L Neisse, Lake Elmo, MN (US);
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61C / ;
U.S. Cl.
CPC ...
433 26 ;
Abstract
A dental shade guide has a tooth-shaped first portion and an elongated second portion which is integrally connected to the first portion. The second portion varies in thickness in stepped fashion along its length. Both portions are made of a material having substantially the same color, thereby enabling the user to compare the color of the shade guide in differing degrees of opacity with the color of tooth structure adjacent the intended restoration, in order to increase the likelihood that the finished restoration will appear as aesthetic as possible.