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. 10, 2009
Filed:
Sep. 08, 2005
Applicants:
Cedric Dupont, San Francisco, CA (US);
Arne Stoschek, Palo Alto, CA (US);
Jan Muenchhoff, Gaimersheim, DE;
Inventors:
Cedric Dupont, San Francisco, CA (US);
Arne Stoschek, Palo Alto, CA (US);
Jan MuEnchhoff, Gaimersheim, DE;
Assignee:
Volkswagen AG, Wolfsburg, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 21/55 (2006.01);
U.S. Cl.
CPC ...
Abstract
A device for determination of the surface condition of a roadway includes a light-sensitive sensor to measure a light signal reflected from the surface of the roadway and an analyzer to determine the surface condition of the roadway as a function of the power of the light signal at a first wavelength in the infrared range, at a second wavelength in the infrared range and at least a third wavelength in the infrared range.