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
  • Web of cellulosic fibers comprising an active agent and method for manufacturing a web of cellulosic fibers comprising an active agent
    Patent number: 10253455
    Abstract: A web including cellulosic fibers having two sides and including an additive composition present on at least one side of the web and a method of making such a web are disclosed. The additive composition includes at least one filming agent and at least one active agent, the filming agent being fixed on the web and the active agent being retained on the web by the filming agent, the active agent being an antimicrobial agent.
    Type: Grant
    Filed: July 22, 2013
    Date of Patent: April 9, 2019
    Assignee: ESSITY OPERATIONS FRANCE
    Inventors: Gérald Duhen, Philippe Malgarini, Cyril Schu, Nicolas Marquine
  • 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
  • Compact roll of absorbent paper
    Patent number: 9375116
    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: June 15, 2012
    Date of Patent: June 28, 2016
    Assignee: SCA TISSUE FRANCE
    Inventors: Pierre Graff, Gérald Duhen, Donald Barredo, Pierre Probst, Pascale Saas
  • WEB OF CELLULOSIC FIBERS COMPRISING AN ACTIVE AGENT AND METHOD FOR MANUFACTURING A WEB OF CELLULOSIC FIBERS COMPRISING AN ACTIVE AGENT
    Publication number: 20160160443
    Abstract: A web including cellulosic fibers having two sides and including an additive composition present on at least one side of the web and a method of making such a web are disclosed. The additive composition includes at least one filming agent and at least one active agent, the filming agent being fixed on the web and the active agent being retained on the web by the filming agent, the active agent being an antimicrobial agent.
    Type: Application
    Filed: July 22, 2013
    Publication date: June 9, 2016
    Inventors: Gérald DUHEN, Philippe MALGARINI, Cyril SCHU, Nicolas MARQUINE
  • COMPACT ROLL OF ABSORBENT PAPER
    Publication number: 20140117135
    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: June 15, 2012
    Publication date: May 1, 2014
    Applicant: SCA TISSUE FRANCE
    Inventors: Pierre Graff, Gérald 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