Patents by Inventor Rasha Wafik Zaki Guirguis

Rasha Wafik Zaki Guirguis 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: 7329621
    Abstract: Stretchable film laminates including a layer of elastomeric openwork, such as a plurality of elastic strands or an elastomeric mesh structure. The stretchable film laminates may include a film layer bonded to the layer of elastomeric openwork, with the film layer having cross-directional stretch and the laminate having a multi-phase stretchability profile. The stretchable film laminates may be made by extruding a film from a die, stretching the film, forming and stretching a layer of elastomeric openwork, conveying the stretched elastomeric openwork onto the film while the film is stretched, and passing the film and the elastomeric openwork through a nip. The invention also includes a machine capable of producing machine-direction, cross-direction, and biaxial stretch materials. The machine includes at least one extruder, at least one filament die and at least one film die both attached to the extruder(s), and at least one nip downstream of the extruder(s).
    Type: Grant
    Filed: December 17, 2003
    Date of Patent: February 12, 2008
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Leslie Warren Collier, IV, Susan Elaine Shawver, Bryon Paul Day, Raymond Jeffrey May, James Russell Fitts, Jr., Michael Tod Morman, Monica Varriale, Matthew Boyd Lake, David Michael Matela, Gregory Todd Sudduth, Randall James Palmer, Charles John Morell, Prasad Shrikrishna Potnis, Rasha Wafik Zaki Guirguis, Cristian M. Neculescu, Peiguang Zhou
  • Publication number: 20040122409
    Abstract: An elastic blend is made from at least two incompatible polymers and a compatibilizer selected to improve miscibility of the incompatible polymers. For example, a blend of olefinic plastomers and elastomeric styrenic block copolymers, and a compatibilizer having components of the olefinic plastomer and sytrenic block copolymer elastomer yields an inexpensive elastic blend material with adequate elastic properties for use in personal care products.
    Type: Application
    Filed: December 23, 2002
    Publication date: June 24, 2004
    Inventors: Oomman Painumoottil Thomas, David M. Matela, Rasha Wafik Zaki Guirguis
  • Publication number: 20040102125
    Abstract: An extensible laminate includes a sheet of an extensible nonwoven material that has a fabric side and a film side, a sheet of an elastomeric film, and an adhesive. The adhesive is applied to at least a portion of the film side of the extensible nonwoven material. The extensible nonwoven material is selectively attached to the elastomeric film by a plurality of intermittent adhesive bonds. The extensible nonwoven material is further selectively attached to the clastomeric film by a plurality of thermal point bonds. The intermittent adhesive bonds cover a greater percentage of an interfacial plane between the extensible nonwoven material and the elastomeric film material than the thermal point bonds. A process for making the extensible laminate is also disclosed.
    Type: Application
    Filed: November 27, 2002
    Publication date: May 27, 2004
    Inventors: Michael Tod Morman, Prasad Shrikrishna Potnis, Gregory Todd Sudduth, Leslie Warren Collier, David Michael Matela, Randall James Palmer, Sjon-Paul Lee Conyer, Charles John Morell, Rasha Wafik Zaki Guirguis
  • Publication number: 20030200636
    Abstract: A process for making a plurality of necked nonwoven strips having similar or identical cross-directional profiles includes the steps of slitting a neckable nonwoven web into a plurality of neckable nonwoven strips, passing the neckable nonwoven web between a first pair of nip rollers having a first surface velocity and a second pair of nip rollers having a second surface velocity greater than the first surface velocity, and necking the nonwoven web between the first pair of nip rollers and the second pair of nip rollers.
    Type: Application
    Filed: April 24, 2002
    Publication date: October 30, 2003
    Inventors: Michael Tod Morman, Gregory Todd Sudduth, Robert James Gerndt, Mark Gilbert Kupelian, Angela Grace Dobson, Patricia Hwang Calhoun, Courtney Eileen Shea, Rasha Wafik Zaki Guirguis, Robert David Wright, John Joseph Sayovitz