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:
Nov. 03, 2015
Filed:
Jul. 06, 2007
Makoto Yamamoto, Osaka, JP;
Ryuichi Yosimoto, Kyoto, JP;
Noriyuki Negoro, Kyoto, JP;
Masuhito Yasui, Kyoto, JP;
Kouji Shou, Kyoto, JP;
Makoto Yamamoto, Osaka, JP;
Ryuichi Yosimoto, Kyoto, JP;
Noriyuki Negoro, Kyoto, JP;
Masuhito Yasui, Kyoto, JP;
Kouji Shou, Kyoto, JP;
SHOFU INC., Kyoto, JP;
Abstract
In a shade guide, a plurality of shade tabs whose colors are mutually different are arranged regularly based on the colors. The arrangement of the plurality of shade tabs is an arrangement determined based on: S values and V values that are determined according to to which areas, from among areas partitioned by a plurality of straight lines in an L*-C* plane, the coordinates of the colors of the shade tabs belong, and H values that are determined according to to which areas, from among areas partitioned by a plurality of straight lines in an a*-b* plane, the coordinates belong. S groups, each of which is a shade tab group having a common S value, are arranged in the shade guide. V rows, each of which is a shade tab group having a common V value, are arranged in each S group. In each V row, the plurality of shade tabs have mutually different H values and are aligned in an order that is in accordance with the H values. Using this shade guide enables precisely and easily discriminating the color of an evaluation target tooth.