Patents by Inventor Richard L. Sparks

Richard L. Sparks 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).

  • Breathable composite sheet structure and absorbent articles utilizing same
    Patent number: 7307031
    Abstract: A breathable composite sheet material, a method for making such a sheet material, and an absorbent article utilizing the sheet material are provided. The composite sheet material is comprised of a thermoplastic film adhered directly to a fibrous substrate. The thermoplastic film comprises at least 50% by weight of a polymer material from the group of block copolyether esters, block copolyether amides and polyurethanes. The substrate comprises a fibrous web of at least 50% by weight of polyolefin polymer synthetic fibers. The composite sheet exhibits a peel strength of at least 0.1 N/cm, a dynamic fluid transmission of less than about 0.75 g/m2 when subjected to an impact energy of about 2400 joules/m2, and a moisture vapor transmission rate, according to the desiccant method, of at least 1500 g/m2/24 hr.
    Type: Grant
    Filed: January 7, 2004
    Date of Patent: December 11, 2007
    Assignee: The Procter & Gamble Company
    Inventors: Nora Liu Carroll, Hyun Sung Lim, George Joseph Ostapchenko, Shailaja R. Vaidya, J. Michael McKenna, John Joseph Curro, Gary Dean Lavon, Richard L. Sparks
  • Breathable composite sheet structure and absorbent articles utilizing same
    Publication number: 20040142621
    Abstract: A breathable composite sheet material, a method for making such a sheet material, and an absorbent article utilizing the sheet material are provided. The composite sheet material is comprised of a thermoplastic film adhered directly to a fibrous substrate. The thermoplastic film comprises at least 50% by weight of a polymer material from the group of block copolyether esters, block copolyether amides and polyurethanes. The substrate comprises a fibrous web of at least 50% by weight of polyolefin polymer synthetic fibers. The composite sheet exhibits a peel strength of at least 0.1 N/cm, a dynamic fluid transmission of less than about 0.75 g/m2 when subjected to an impact energy of about 2400 joules/m2, and a moisture vapor transmission rate, according to the desiccant method, of at least 1500 g/m2/24 hr.
    Type: Application
    Filed: January 7, 2004
    Publication date: July 22, 2004
    Inventors: Nora Liu Carroll, Hyun Sung Lim, George Joseph Ostapchenko, Shailaja R. Vaidya, J. Michael McKenna, John Joseph Curro, Gary Dean Lavon, Richard L. Sparks
  • Breathable composite sheet structure and absorbent articles utilizing same
    Patent number: 6677258
    Abstract: A breathable composite sheet material, a method for making such a sheet material, and an absorbent article utilizing the sheet material are provided. The composite sheet material is comprised of a thermoplastic film adhered directly to a fibrous substrate. The thermoplastic film comprises at least 50% by weight of a polymer material from the group of block copolyether esters, block copolyether amides and polyurethanes. The substrate comprises a fibrous web of at least 50% by weight of polyolefin polymersynthetic fibers. The composite sheet exhibits a peel strength of at least 0.1 N/cm, a dynamic fluid transmission of less than about 0.75 g/m2 when subjected to an impact energy of about 2400 joules/m2, and a moisture vapor transmission rate, according to the dessiccant method, of at least 1500 g/m2/2 hr.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: January 13, 2004
    Assignees: E. I. du Pont de Nemours and Company, Proctor and Gamble
    Inventors: Nora Liu Carroll, Hyun Sung Lim, George Joseph Ostapchenko, Shailaja R. Vaidya, J. Michael Mc Kenna, John Joseph Curro, Gary Dean Lavon, Richard L. Sparks
  • BREATHABLE COMPOSITE SHEET STRUCTURE AND ABSORBENT ARTICLES UTILIZING SAME
    Publication number: 20020019187
    Abstract: A breathable composite sheet material, a method for making such a sheet material, and an absorbent article utilizing the sheet material are provided. The composite sheet material is comprised of a thermoplastic film adhered directly to a fibrous substrate. The thermoplastic film comprises at least 50% by weight of a polymer material from the group of block copolyether esters, block copolyether amides and polyurethanes. The substrate comprises a fibrous web of at least 50% by weight of polyolefin polymersynthetic fibers. The composite sheet exhibits a peel strength of at least 0.1 N/cm, a dynamic fluid transmission of less than about 0.75 g/m2 when subjected to an impact energy of about 2400 joules/m2, and a moisture vapor transmission rate, according to the dessiccant method, of at least 1500 g/m2/24 hr.
    Type: Application
    Filed: November 25, 1998
    Publication date: February 14, 2002
    Inventors: NORA LIU CARROLL, HYUN SUNG LIM, GEORGE JOSEPH OSTAPCHENKO, SHAILAJA R. VAIDYA, J. MICHAEL MC KENNA, JOHN JOSEPH CURRO, GARY DEAN LAVON, RICHARD L. SPARKS
  • Breathable composite sheet structure and absorbent articles utilizing same
    Patent number: RE41539
    Abstract: A breathable composite sheet material, a method for making such a sheet material, and an absorbent article utilizing the sheet material are provided. The composite sheet material is comprised of a thermoplastic film adhered directly to a fibrous substrate. The thermoplastic film comprises at least 50% by weight of a polymer material from the group of block copolyether esters, block copolyether amides and polyurethanes. The substrate comprises a fibrous web of at least 50% by weight of polyolefin polymer synthetic fibers. The composite sheet exhibits a peel strength of at least 0.1 N/cm, a dynamic fluid transmission of less than about 0.75 g/m2 when subjected to an impact energy of about 2400 joules/m2, and a moisture vapor transmission rate, according to the desiccant method, of at least 1500 g/m2/24 hr.
    Type: Grant
    Filed: January 31, 2008
    Date of Patent: August 17, 2010
    Assignee: The Procter & Gamble Company
    Inventors: Nora Liu Carroll, Hyun Sung Lim, George Joseph Ostapchenko, Shailaja R. Vaidya, J. Michael McKenna, John Joseph Curro, Gary Dean Lavon, Richard L. Sparks