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. 15, 2005
Filed:
May. 21, 2003
Faiz Feisal Sherman, West Chester, OH (US);
Vladimir Gartstein, Cincinnati, OH (US);
Kendal William Kerr, Okeana, OH (US);
Herman William Meyer, Cincinnati, OH (US);
Jim Allen Mccurdy, Liberty Township, OH (US);
Faiz Feisal Sherman, West Chester, OH (US);
Vladimir Gartstein, Cincinnati, OH (US);
Kendal William Kerr, Okeana, OH (US);
Herman William Meyer, Cincinnati, OH (US);
Jim Allen McCurdy, Liberty Township, OH (US);
The procter & Gamble Company, Cincinnati, OH (US);
Abstract
A directional coupler sensor is provided for measuring the moisture content of a substrate, such as hair. The sensor incorporates a high frequency directional coupler having a pair of generally parallel plates defining a coupling gap therebetween. A high frequency signal generator generates an electromagnetic field across the gap with the substrate placed across the coupling gap. The coupled power relates to the moisture content of the substrate. A pressure sensor is provided to ensure that the desired compactness of the substrate across the coupling gap is achieved to obtain accurate, reliable and consistent results.