Patents by Inventor Othman A. Hamed

Othman A. Hamed 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).

  • Publication number: 20070270070
    Abstract: A method for making stiffened cellulosic fiber in sheet form, and the resultant stiffened cellulosic fiber. The method of making the stiffened fibers involves impregnating a cellulosic base fiber in sheet form with a treatment composition solution, drying and curing the impregnated sheet, and thereafter adding water or an aqueous solution of odor removing agent to the cured sheet to produce a sheet of stiffened cellulosic fiber having a moisture content of at least about 6.0 weight %. When defiberized, the stiffened fiber has a low content of fines and knots and nits. The stiffened fiber also exhibits a low degree of yellowing and is substantially free of a burnt-like odor. The stiffened fiber may be used in an absorbent article, such as in a liquid acquisition layer or absorbent core of a baby diaper.
    Type: Application
    Filed: May 19, 2006
    Publication date: November 22, 2007
    Inventor: Othman A. Hamed
  • Publication number: 20070254550
    Abstract: A liquid distribution mat that is a wet-laid mat of enhanced cellulosic fibers that are cellulosic fibers cross-linked in sheet form, as well as methods of making the liquid distribution mat. The liquid distribution mat has high vertical wicking properties and excellent structural integrity in both wet and dry states. The liquid distribution mat is suitable for use in an absorbent article. When used in an absorbent article such as a baby diaper, the liquid distribution mat rapidly acquires and transports bodily discharges from the point of insult to other regions of the absorbent article, thereby maximizing the utilization of the absorbent article.
    Type: Application
    Filed: May 1, 2006
    Publication date: November 1, 2007
    Inventors: Othman Hamed, Harry Chmielewski
  • Publication number: 20070077428
    Abstract: An odor-inhibiting fiber having a cellulosic fiber and an odor-inhibiting formulation. The odor-inhibiting formulation may contain an odor-inhibiting agent, such as a biocide, an enzyme, a urease inhibitor. The odor-inhibiting formulation also may contain a liquid carrier such as a hydrophobic or hydrophilic organic liquid, or a mixture of a hydrophobic and hydrophilic organic liquid. The cellulosic fiber is impregnated with the odor-inhibiting formulation to produce fiber having odor-inhibiting characteristics. The resultant odor-inhibiting fiber is useful in making absorbent articles with odor-inhibiting characteristics. The fiber of the embodiments prevents odor by inhibiting bacteria growth and ammonia production, especially when used in an absorbent article such as a diaper or adult incontinence device.
    Type: Application
    Filed: September 30, 2005
    Publication date: April 5, 2007
    Inventors: Othman Hamed, Harry Chmielewski
  • Publication number: 20070020452
    Abstract: A method for making acquisition fiber in sheet form that exhibits a low degree of yellowing and is substantially free of burnt-like odor. The acquisition fiber may be produced by treating cellulosic fibers in sheet form with a treatment composition solution that includes a cross-linking agent and a modifying agent. After the fibers are impregnated with the treatment composition, the fibers are dried and cured, and then treated with an odor removing agent. The resultant acquisition fiber may be used in absorbent articles, such as personal care products.
    Type: Application
    Filed: July 21, 2005
    Publication date: January 25, 2007
    Inventors: Othman Hamed, Harry Chmielewski
  • Patent number: 7094318
    Abstract: The present invention relates to cross-linked cellulosic fiber having improved absorbency characteristics when compared to conventional cross-linked fibers. The cross-linked cellulosic fiber is obtainable by reacting pulp in the sheet or fluff form with one or more reagents selected from organic molecule having acid and aldehyde functional groups “acid aldehydes.” The invention also relates to a method of producing the cross-linked fiber. The method includes heating the treated cellulosic fibers to promote intrafiber cross-linking. The cross-linked fibers are characterized by having an improved centrifuge retention capacity, fluid acquisition rate, resiliency, absorbent capacity, absorbency under load, and other absorbent properties. The inventive cross-linked fibers are useful in forming absorbent composites, and in particular absorbent cores for use in absorbent articles.
    Type: Grant
    Filed: October 28, 2003
    Date of Patent: August 22, 2006
    Assignee: Rayonier Products and Financial Services Company
    Inventors: Othman A. Hamed, Harry J. Chmielewski, Dana B. McBee
  • Publication number: 20060184147
    Abstract: A treatment composition for making acquisition fluff pulp in sheet form, having a cross-linking agent and an anti-hydrogen-bonding agent. The cross-linking agent may be a polycarboxylic acid, aldehyde, urea-based derivatives or a mixture thereof. The anti-hydrogen-bonding agent may be a silicon polymer terminated with at least one quaternary amine functional group. A method of making acquisition fluff pulp using the treatment composition involves treating a cellulosic base fiber with a treatment composition solution to impregnate the fiber with the treatment composition, and then drying and curing the impregnated fiber. The resultant acquisition fluff pulp may be utilized in an acquisition layer and/or an absorbent core of an absorbent article intended for body waste management.
    Type: Application
    Filed: February 16, 2005
    Publication date: August 17, 2006
    Inventor: Othman Hamed
  • Patent number: 7074301
    Abstract: The present invention relates to cross-linked cellulosic fiber having improved absorbency characteristics when compared to conventional cross-linked fibers. The cross-linked cellulosic fiber is obtainable by reacting pulp in the sheet or fluff form with one or more reagents selected from organic molecule having acid and aldehyde functional groups “acid aldehydes.” The invention also relates to a method of producing the cross-linked fiber. The method includes heating the treated cellulosic fibers to promote intrafiber cross-linking. The cross-linked fibers are characterized by having an improved centrifuge retention capacity, fluid acquisition rate, resiliency, absorbent capacity, absorbency under load, and other absorbent properties. The inventive cross-linked fibers are useful in forming absorbent composites, and in particular absorbent cores for use in absorbent articles.
    Type: Grant
    Filed: June 11, 2002
    Date of Patent: July 11, 2006
    Assignee: Rayonier Products and Financial Services Company
    Inventors: Othman A. Hamed, Harry J. Chmielewski, Dana B. McBee
  • Publication number: 20060118258
    Abstract: A plasticizing formulation for producing plasticized fluff pulp. The plasticizing formulation, which preferably is an aqueous solution, includes a primary plasticizing agent, and optionally a secondary plasticizing agent. Preferably, the primary plasticizing agent is 1,4-cyclohexanedimethanol, and the secondary plasticizing agent is triacetin. When the plasticizing formulation is applied to a cellulosic fluff pulp, a plasticized fluff pulp is produced. The resultant plasticized fluff pulp may have one or more of the following: reduced Kamas energy, Mullen strength, and fiber knot and nit contents, when compared to the base cellulosic fluff pulp fiber that is not plasticized.
    Type: Application
    Filed: December 2, 2004
    Publication date: June 8, 2006
    Inventors: Harry Chmielewski, Othman Hamed, Michael Haeussler
  • Publication number: 20050263258
    Abstract: The present invention relates to cross-linked cellulosic fiber having improved absorbency characteristics when compared to conventional cross-linked fibers. The cross-linked cellulosic fiber is obtainable by reacting pulp in the sheet or fluff form with one or more reagents selected from organic molecule having acid and aldehyde functional groups “acid aldehydes.” The invention also relates to a method of producing the cross-linked fiber. The method includes heating the treated cellulosic fibers to promote intrafiber cross-linking. The cross-linked fibers are characterized by having an improved centrifuge retention capacity, fluid acquisition rate, resiliency, absorbent capacity, absorbency under load, and other absorbent properties. The inventive cross-linked fibers are useful in forming absorbent composites, and in particular absorbent cores for use in absorbent articles.
    Type: Application
    Filed: June 21, 2005
    Publication date: December 1, 2005
    Inventors: Othman Hamed, Harry Chmielewski, Dana McBee
  • Publication number: 20050256470
    Abstract: The present invention relates to cross-linked cellulosic fiber having improved absorbency characteristics when compared to conventional cross-linked fibers. The cross-linked cellulosic fiber is obtainable by reacting pulp in the sheet or fluff form with one or more reagents selected from organic molecule having acid and aldehyde functional groups “acid aldehydes.” The invention also relates to a method of producing the cross-linked fiber. The method includes heating the treated cellulosic fibers to promote intrafiber cross-linking. The cross-linked fibers are characterized by having an improved centrifuge retention capacity, fluid acquisition rate, resiliency, absorbent capacity, absorbency under load, and other absorbent properties. The inventive cross-linked fibers are useful in forming absorbent composites, and in particular absorbent cores for use in absorbent articles.
    Type: Application
    Filed: June 21, 2005
    Publication date: November 17, 2005
    Inventors: Othman Hamed, Harry Chmielewski, Dana McBee
  • Publication number: 20050247419
    Abstract: A treatment composition for producing acquisition fluff pulp, the treatment composition being a mixture of a cross-linking agent and a modifying agent. The cross-linking agent may be a polycarboxylic acid. The modifying agent may be a material that is water soluble non-anionic, non-polymeric material, and can function as debonder and plasticizer. A method of producing acquisition fluff pulp using the treatment composition involves treating a cellulosic base fiber with a treatment composition solution to impregnate the fiber with the treatment composition, and then drying and curing the impregnated fiber. The resultant acquisition fluff pulp may be utilized in an acquisition layer and/or an absorbent core of an absorbent article intended for body waste management.
    Type: Application
    Filed: May 6, 2004
    Publication date: November 10, 2005
    Inventors: Othman Hamed, Michael Haeussler
  • Publication number: 20050085150
    Abstract: The present invention relates to superabsorbent cellulose fiber including cellulose and at least one ethylenically unsaturated monomer. The invention also relates to a method of producing the superabsorbent fiber, and absorbent articles including the superabsorbent fiber.
    Type: Application
    Filed: November 10, 2004
    Publication date: April 21, 2005
    Inventor: Othman Hamed
  • Publication number: 20050079361
    Abstract: Embodiments of the invention relate to a modifying agent for making cellulosic based acquisition fibers in the sheet form, the modifying agent being the reaction product of a polycarboxylic acid compound and a polyfunctional epoxy compound. A method of producing the cellulosic based acquisition fiber in the sheet from using the modifying agent includes treating the cellulosic fibers in the sheet form with the modifying agent, and drying and curing the treated sheet to promote the formation of intra-fiber bonding. The resultant cellulosic based acquisition fiber may be utilized in an acquisition layer and/or an absorbent core of an absorbent article.
    Type: Application
    Filed: October 14, 2003
    Publication date: April 14, 2005
    Inventors: Othman Hamed, Harry Chmielewski
  • Publication number: 20050045290
    Abstract: The present invention is directed to cross-linked cellulosic fiber in the sheet from, obtainable by cross-linking a blend of mercerized pulp and conventional pulp. The method includes heating treated cellulosic fibers to promote intra-fiber cross-linking. The cross-linked fibers are characterized by an improved acquisition rate, resiliency, absorbency, and absorbency under load. Moreover, the inventive cross-linked fibers exhibit a reduction in centrifuge retention capacity, and have low knots, nits and fines contents. The cross-linked cellulosic fibers of the invention are useful in the acquisition layer and/or absorbent core of absorbent articles.
    Type: Application
    Filed: October 18, 2004
    Publication date: March 3, 2005
    Inventors: Othman Hamed, Harry Chmielewski, Tina Murguia, Karl Sears
  • Patent number: 6844066
    Abstract: The present invention relates to superabsorbent cellulose fiber including cellulose and at least one ethylenically unsaturated monomer. The invention also relates to a method of producing the superabsorbent fiber, and absorbent articles including the superabsorbent fiber.
    Type: Grant
    Filed: May 19, 2003
    Date of Patent: January 18, 2005
    Assignee: Rayonier Products and Financial Services Company
    Inventor: Othman A. Hamed
  • Publication number: 20040234760
    Abstract: The present invention relates to superabsorbent cellulose fiber including cellulose and at least one ethylenically unsaturated monomer. The invention also relates to a method of producing the superabsorbent fiber, and absorbent articles including the superabsorbent fiber.
    Type: Application
    Filed: May 19, 2003
    Publication date: November 25, 2004
    Applicant: Rayonier Products and Financial Services Company
    Inventor: Othman A. Hamed
  • Publication number: 20040177935
    Abstract: The present invention is directed to cross-linked cellulosic fiber in the sheet from, obtainable by cross-linking a blend of mercerized pulp and conventional pulp. The method includes heating treated cellulosic fibers to promote intra-fiber cross-linking. The cross-linked fibers are characterized by an improved acquisition rate, resiliency, absorbency, and absorbency under load. Moreover, the inventive cross-linked fibers exhibit a reduction in centrifuge retention capacity, and have low knots, nits and fines contents. The cross-linked cellulosic fibers of the invention are useful in the acquisition layer and/or absorbent core of absorbent articles.
    Type: Application
    Filed: March 14, 2003
    Publication date: September 16, 2004
    Inventors: Othman A. Hamed, Harry J. Chmielewski, Tina R. Murguia, Karl Sears
  • Publication number: 20040084159
    Abstract: The present invention relates to cross-linked cellulosic fiber having improved absorbency characteristics when compared to conventional cross-linked fibers. The cross-linked cellulosic fiber is obtainable by reacting pulp in the sheet or fluff form with one or more reagents selected from organic molecule having acid and aldehyde functional groups “acid aldehydes.” The invention also relates to a method of producing the cross-linked fiber. The method includes heating the treated cellulosic fibers to promote intrafiber cross-linking. The cross-linked fibers are characterized by having an improved centrifuge retention capacity, fluid acquisition rate, resiliency, absorbent capacity, absorbency under load, and other absorbent properties. The inventive cross-linked fibers are useful in forming absorbent composites, and in particular absorbent cores for use in absorbent articles.
    Type: Application
    Filed: October 28, 2003
    Publication date: May 6, 2004
    Inventors: Othman A. Hamed, Harry J. Chmielewski, Dana B. McBee
  • Publication number: 20030230391
    Abstract: The present invention relates to cross-linked cellulosic fiber having improved absorbency characteristics when compared to conventional cross-linked fibers. The cross-linked cellulosic fiber is obtainable by reacting pulp in the sheet or fluff form with one or more reagents selected from organic molecule having acid and aldehyde functional groups “acid aldehydes.” The invention also relates to a method of producing the cross-linked fiber. The method includes heating the treated cellulosic fibers to promote intrafiber cross-linking. The cross-linked fibers are characterized by having an improved centrifuge retention capacity, fluid acquisition rate, resiliency, absorbent capacity, absorbency under load, and other absorbent properties. The inventive cross-linked fibers are useful in forming absorbent composites, and in particular absorbent cores for use in absorbent articles.
    Type: Application
    Filed: June 11, 2002
    Publication date: December 18, 2003
    Inventors: Othman A. Hamed, Harry J. Chmielewski, Dana B. McBee