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:
May. 29, 2007
Filed:
May. 26, 2004
Bogdan N. Alexander, Richmond, VA (US);
Kenneth E. Rudolph, Jr., Louisville, KY (US);
Ronald Ölschläger, Tangstedt, DE;
Tino Häupke, Hamburg, DE;
Bogdan N. Alexander, Richmond, VA (US);
Kenneth E. Rudolph, Jr., Louisville, KY (US);
Ronald Ölschläger, Tangstedt, DE;
Tino Häupke, Hamburg, DE;
Philip Morris USA Inc., Richmond, VA (US);
Abstract
A system for measuring the permeability of a material includes a light source for illuminating the material, and a stray light sensor for detecting stray light traveling through the material from the light source and outputting a stray light signal indicative of the stray light detected. The system further includes a direct light sensor for detecting direct light traveling through holes in the material from the light source and outputting a direct light signal indicative of the direct light detected. Finally, the system includes a digital processing device for receiving the stray light and direct light signals and calculating the permeability of the material.