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:
Feb. 02, 2016
Filed:
Aug. 16, 2011
Applicants:
Christoph Schmidt, Kriftel, DE;
Christoph Hoffmann, Undenheim, DE;
Sabine Schoen, Herten, DE;
Inventors:
Assignee:
Merck Patent GmbH, Darmstadt, DE;
Primary Examiner:
Int. Cl.
CPC ...
G01N 21/00 (2006.01); G01N 21/47 (2006.01); G01N 21/57 (2006.01);
U.S. Cl.
CPC ...
G01N 21/47 (2013.01); G01N 21/57 (2013.01); G01N 2021/575 (2013.01);
Abstract
The present invention relates to a method for the characterization of pigments and fillers in which the luminance of a pigmented transparent medium is determined against a dark background. This measurement method is particularly suitable for determining the optical properties of cosmetic fillers.