Patents by Inventor Peter R. Abitz

Peter R. Abitz 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: 8497410
    Abstract: A method of making personal hygiene articles of high absorbency from cellulosic fiber pulp without chemical cross-linking of the cellulosic fibers is disclosed. The method comprises interposing a sublayer of mechanically fluffed alkali extracted cellulosic fiber pulp between a fluid permeable layer and a fluid impermeable layer.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: July 30, 2013
    Assignee: Rayonier TRS Holdings Inc.
    Inventors: Phyllis Leithem, Charles A. Kremers, W. Paul Harrell, Stephen Lewis, Karl D. Sears, Quan He, Peter R. Abitz
  • Patent number: 8247641
    Abstract: An improved absorbency material for absorbency applications comprised of a cellulosic fibrous material wherein said cellulosic fibrous material such as pulp is a cold alkali solution treated material at a treatment temperature of less than about 50° C.; a process for improving absorbency and other characteristics of said pulp.
    Type: Grant
    Filed: May 16, 2001
    Date of Patent: August 21, 2012
    Assignee: Rayonier TRS Holdings Inc.
    Inventors: Phyllis Leithem, Charles A. Kremers, W. Paul Harrell, Stephen Lewis, Karl D. Sears, Quan He, Peter R. Abitz
  • Publication number: 20120183772
    Abstract: A modified kraft pulp fiber with unique properties is provided. The modified fiber can be a modified bleached kraft fiber that is almost indistinguishable from its conventional counterpart, except that it has a low degree of polymerization (DP). Methods for making the modified fiber and products made from it are also provided. The method can be a one step acidic, iron catalyzed peroxide treatment process that can be incorporated into a single stage of a multi-stage bleaching process. The products can be chemical cellulose feedstocks, microcrystalline cellulose feedstocks, fluff pulps and products made from them.
    Type: Application
    Filed: December 8, 2011
    Publication date: July 19, 2012
    Applicant: GP Cellulose GMbH
    Inventors: Arthur J. Nonni, Charles E. Courchene, Christopher Michael Slone, Peter R. Abitz
  • Publication number: 20120175073
    Abstract: A modified kraft pulp fiber with unique properties is provided. The modified fiber can be a modified bleached kraft fiber that is almost indistinguishable from its conventional counterpart, except that it has a low degree of polymerization (DP). Methods for making the modified fiber and products made from it are also provided. The method can be a one step acidic, iron catalyzed peroxide treatment process that can be incorporated into a single stage of a multi-stage bleaching process. The products can be chemical cellulose feedstocks, microcrystalline cellulose feedstocks, fluff pulps and products made from them.
    Type: Application
    Filed: May 28, 2010
    Publication date: July 12, 2012
    Applicant: GP Cellulose GMbH
    Inventors: Arthur J. Nonni, Charles E. Courchene, Christopher Michael Slone, Peter R. Abitz
  • Publication number: 20110209839
    Abstract: A method of making personal hygiene articles of high absorbency from cellulosic fiber pulp without chemical cross-linking of the cellulosic fibers is disclosed. The method comprises interposing a sublayer of mechanically fluffed alkali extracted cellulosic fiber pulp between a fluid permeable layer and a fluid impermeable layer.
    Type: Application
    Filed: February 18, 2011
    Publication date: September 1, 2011
    Inventors: Phyllis Leithem, Clarles A. Kremers, W. Paul Harrell, Stephen Lewis, Karl D. Sears, Quan He, Peter R. Abitz
  • Patent number: 7919667
    Abstract: An improved absorbency material for absorbency applications comprised of a cellulosic fibrous material wherein said cellulosic fibrous material such as pulp is a cold alkali solution treated material at a treatment temperature of less than about 50° C.; a process for improving absorbency and other characteristics of said pulp.
    Type: Grant
    Filed: June 15, 1999
    Date of Patent: April 5, 2011
    Assignee: Rayonier TRS Holdings Inc.
    Inventors: Phyllis Leithem, Charles A. Kremers, W. Paul Harrell, Stephen Lewis, Karl D. Sears, Quan He, Peter R. Abitz
  • Publication number: 20020096276
    Abstract: An improved absorbency material for absorbency applications comprised of a cellulosic fibrous material wherein said cellulosic fibrous material such as pulp is a cold alkali solution treated material at a treatment temperature of less than about 50° C.; a process for improving absorbency and other characteristics of said pulp.
    Type: Application
    Filed: May 16, 2001
    Publication date: July 25, 2002
    Inventors: Phyllis Leithem, Charles A. Kremers, W. Paul Harrell, Stephen Lewis, Karl D. Sears, Quan He, Peter R. Abitz
  • Publication number: 20010031358
    Abstract: An absorbent material that can be used as an absorbent core in absorbent articles such as disposable diapers, feminine hygiene products and incontinence devices is provided. An absorbent material of this invention contains cellulosic fibers at least a portion of which cellulosic fibers have a relative crystallinity of less than about 65 percent. The absorbent material has superior absorptive, strength, and suppleness properties when compared to existing core materials. The material can be air-laid in one or more layers.
    Type: Application
    Filed: April 9, 2001
    Publication date: October 18, 2001
    Inventors: Erol Tan, Peter R. Abitz, Kays Chinai
  • Patent number: 5916670
    Abstract: An absorbent material that can be used as an absorbent core in absorbent articles such as disposable diapers, feminine hygiene products and incontinence devices is provided. An absorbent material of this invention contains cellulosic fibers at least a portion of which cellulosic fibers are treated with caustic at a low temperature. The absorbent material has superior absorptive, strength, and suppleness properties when compared to existing core materials. The material can be air-laid in one or more layers.
    Type: Grant
    Filed: October 10, 1997
    Date of Patent: June 29, 1999
    Assignee: Rayonier Inc.
    Inventors: Erol Tan, Peter R. Abitz, Kays Chinai
  • Patent number: 5866242
    Abstract: An absorbent material that can be used as an absorbent core in absorbent articles such as disposable diapers, feminine hygiene products and incontinence devices is provided. An absorbent material of this invention contains a blend of cellulosic fibers and a superabsorbent material. The absorbent material has superior wicking, strength and softness properties when compared to existing core materials. The material can be air-laid as a homogeneous blend of fiber and superabsorbent in one or more layers.
    Type: Grant
    Filed: January 17, 1997
    Date of Patent: February 2, 1999
    Assignee: Rayonier Inc.
    Inventors: Erol Tan, Peter R. Abitz
  • Patent number: 5858172
    Abstract: Wood pulp sheets treated with triacetin and other compounds, or solutions or emulsions of same, having increased softness while maintaining absorbency, and methods for producing same. More particularly, the invention relates to the treatment of wood pulp useful for making a fluff pulp using a softening agent including alkyl ethers, aryl ethers and formic, ethanoic and propanoic esters of low molecular weight glycols, such as triacetin, propylene glycol diacetate and 2-phenoxyethanol.
    Type: Grant
    Filed: September 15, 1997
    Date of Patent: January 12, 1999
    Assignee: Rayonier Inc.
    Inventors: Karl D. Sears, Peter R. Abitz
  • Patent number: 5776308
    Abstract: Wood pulp sheets treated with triacetin and other compounds, or solutions or emulsions of same, having increased softness while maintaining absorbency, and methods for producing same. More particularly, the invention relates to the treatment of wood pulp useful for making a fluff pulp using a softening agent including alkyl ethers or aryl ethers and esters of low molecular weight glycols, such as triacetin, propylene glycol diacetate and 2-phenoxyethanol.
    Type: Grant
    Filed: October 10, 1996
    Date of Patent: July 7, 1998
    Assignee: Rayonier Research Center
    Inventors: Karl D. Sears, Peter R. Abitz