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:
Jan. 20, 2009
Filed:
Nov. 04, 2005
George R. Scott, Midlothian, VA (US);
Martin T. Garthaffner, Chesterfield, VA (US);
Steven F. Spiers, Richmond, VA (US);
Steven R. Rinehart, Chesterfield, VA (US);
Barry S. Smith, Hopewell, VA (US);
James D. Evans, Chesterfield, VA (US);
George R. Scott, Midlothian, VA (US);
Martin T. Garthaffner, Chesterfield, VA (US);
Steven F. Spiers, Richmond, VA (US);
Steven R. Rinehart, Chesterfield, VA (US);
Barry S. Smith, Hopewell, VA (US);
James D. Evans, Chesterfield, VA (US);
Philip Morris USA Inc., Richmond, VA (US);
Abstract
Process and apparatus for the mass production of compound cigarette filters function to deposit granular filter material into the open ends of vertically oriented filter tubes. Predetermined amounts of diverse granular material are withdrawn by suction from sources of such material, and these amounts are deposited into the tubes. Solid filter segments seal the granular material within the tube. After one half of each filter tube is filled with granular material and sealed, the tube is inverted and the opposite end is filled in substantially the same manner. When cut in half each filter tube produces two cigarette filters.