Patents by Inventor Gerald Duhen

Gerald Duhen 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).

  • Method of making a compact roll of absorbent paper
    Patent number: 10271693
    Abstract: A roll of wiping paper is obtained by winding a sheet of multi-ply absorbent paper around a core. The sheet includes at least a first and a second ply of absorbent paper, each with a grammage of between 15 and 30 g/m2 and at least one of the plies incorporating a wet strength additive. The thickness of the sheet Ep being between 0.02 and 0.07 cm, the diameter of the core being less than 3.5 cm, the diameter of the roll being between 4.5 cm and 11 cm for a volume V of absorbent paper per unit length of the roll, and the absorbency A of the sheet in cm3 of water per gram of paper being greater than 6 cm3/g. The ratio E=A/(Ep*V) of the roll is greater than or equal to 3.2.
    Type: Grant
    Filed: May 25, 2016
    Date of Patent: April 30, 2019
    Assignee: ESSITY OPERATIONS FRANCE
    Inventors: Pierre Graff, Gerald Duhen, Donald Barredo, Pierre Probst, Pascale Saas
  • COMPACT ROLL OF ABSORBENT PAPER
    Publication number: 20160262579
    Abstract: A roll of wiping paper is obtained by winding a sheet of multi-ply absorbent paper around a core. The sheet includes at least a first and a second ply of absorbent paper, each with a grammage of between 15 and 30 g/m2 and at least one of the plies incorporating a wet strength additive. The thickness of the sheet Ep being between 0.02 and 0.07 cm, the diameter of the core being less than 3.5 cm, the diameter of the roll being between 4.5 cm and 11 cm for a volume V of absorbent paper per unit length of the roll, and the absorbency A of the sheet in cm3 of water per gram of paper being greater than 6 cm3/g. The ratio E=A/(Ep*V) of the roll is greater than or equal to 3.2.
    Type: Application
    Filed: May 25, 2016
    Publication date: September 15, 2016
    Applicant: SCA Tissue France
    Inventors: Pierre Graff, Gerald Duhen, Donald Barredo, Pierre Probst, Pascale Saas
  • Absorbent paper with pattern
    Patent number: D716056
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: October 28, 2014
    Assignee: SCA Tissue France
    Inventors: Jean-Bernard Kuehn, Gerald Duhen