Patents by Inventor John Dennis Litvay

John Dennis Litvay has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6372087
    Abstract: Single-ply absorbent tissue paper wherein of the fibers incorporated in the web: (a) at least 20% by weight have a coarseness exceeding 23 mg/100 m; (b) at least about 20% by weight have a coarseness of less than about 12 mg/100 m; and (c) the weight average fiber coarseness to length ratio is less than about 8.5 mg/100 m/mm. The single-ply tissue having: a serpentine configuration; low sidedness; a basis weight of at least about 12.5 lbs. per 3000 square foot ream; specific total tensile strength between 40 and 200 g/3 inches/lb per 3000 square foot ream; a cross direction specific wet tensile strength between 2.75 and 20.0 g/3 inches/lb per 3000 square foot ream; an MD tensile to CD tensile ratio between 1.25 and 2.75; a specific geometric mean tensile stiffness between 0.5 and 3.2 g/inch/% strain per pound per 3000 square foot ream; a friction deviation less than 0.250; and a sidedness parameter less than 0.30.
    Type: Grant
    Filed: June 18, 2001
    Date of Patent: April 16, 2002
    Assignee: Fort James Corporation
    Inventors: Frank David Harper, Taiye Philips Oriaran, John Dennis Litvay
  • Patent number: 6287422
    Abstract: The present invention relates to a soft, thick, single-ply, absorbent paper in the form of a bathroom tissue, facial tissue, or napkin wherein the cellulosic fibers incorporated in the furnish comprise: (a) at least 20 percent by weight of the fibers in the web have a coarseness exceeding 23 mg/100 m; (b) at least about 20 percent by weight of the fibers in the web have a coarseness of less than about 1.2 mg/100 m; and (c) the weight average coarseness to length ratio of the fibers in the web is less than about 8.5 mg/100 m/mm having a serpentine configuration and to a process for the manufacture of such absorbent paper having a basis weight of about 15 lbs. per 3000 square foot ream and having low sidedness, said tissue exhibiting: a specific total tensile strength of between 40 and 200 grams per 3 inches per pound per 3000 square foot ream, a cross direction specific wet tensile strength of between 2.75 and 20.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: September 11, 2001
    Assignee: Fort James Corporation
    Inventors: Frank David Harper, Taiye Philips Oriaran, John Dennis Litvay
  • Patent number: 6280570
    Abstract: The present invention relates to a process of making a soft, thick, single-ply, absorbent paper in the form of a bathroom tissue, facial tissue, or napkin wherein the cellulosic fibers incorporated in the furnish comprise: (a) at least 20 percent by weight of the fibers in the web have a coarseness exceeding 23 mg/100 m; (b) at least about 20 percent by weight of the fibers in the web have a coarseness of less than about 1.2 mg/100 m; and (c) the weight average coarseness to length ratio of the fibers in the web is less than about 8.5 mg/100 m/mm having a serpentine configuration and to a process for the manufacture of such absorbent paper having a basis weight of about 15 lbs. per 3000 square foot ream and having low sidedness, said tissue exhibiting: a specific total tensile strength of between 40 and 200 grams per 3 inches per pound per 3000 square foot ream, a cross direction specific wet tensile strength of between 2.75 and 20.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: August 28, 2001
    Assignee: Fort James Corporation
    Inventors: Frank David Harper, Taiye Philips Oriaran, John Dennis Litvay
  • Patent number: 6153053
    Abstract: The present invention relates to a soft, thick, single-ply, absorbent paper in the form of a bathroom tissue, facial tissue, or napkin wherein the cellulosic fibers incorporated in the furnish comprise: (a) at least 20 percent by weight of the fibers in the web have a coarseness exceeding 23 mg/100 m; (b) at least about 20 percent by weight of the fibers in the web have a coarseness of less than about 1.2 mg/100 m; and (c) the weight average coarseness to length ratio of the fibers in the web is less than about 8.5 mg/100 m/mm having a serpentine configuration and to a process for the manufacture of such absorbent paper having a basis weight of about 15 lbs. per 3000 square foot ream and having low sidedness, said tissue exhibiting:a specific total tensile strength of between 40 and 200 grams per 3 inches per pound per 3000 square foot ream, a cross direction specific wet tensile strength of between 2.75 and 20.
    Type: Grant
    Filed: April 15, 1998
    Date of Patent: November 28, 2000
    Assignee: Fort James Corporation
    Inventors: Frank David Harper, Taiye Philips Oriaran, John Dennis Litvay
  • Patent number: H1672
    Abstract: Tissue products made with fibers having a low Coarseness Index have improved softness relative to tissue products made with conventional papermaking fibers.
    Type: Grant
    Filed: April 3, 1992
    Date of Patent: August 5, 1997
    Assignee: Kimberly-Clark Corporation
    Inventors: Michael Alan Hermans, Robert Dale Sauer, Shafi Ul Hossain, John Dennis Litvay