Patents by Inventor Rahul Krishnakant Nayak

Rahul Krishnakant Nayak 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: 5928209
    Abstract: A breathable diaper, feminine hygiene, or like disposable sanitary product construction includes a plurality of materials including, from the skin-facing side outwardly, a topsheet of liquid- and vapor-permeable hydrophilic material. A core of highly absorbent material is disposed outwardly of the topsheet for absorbing fluid received through the topsheet, the core having an inner surface in fluid communication with the topsheet. A backsheet is disposed at least partially as an outer surface of the construction and is formed of a pouch defined by two layers of a non-woven hydrophobic and vapor-permeable material, with absorbent or superabsorbent particles therebetween, so that the backsheet limits the outward escape of liquid therethrough while enabling the outward escape of heat and water vapor therethrough. Each backsheet layer is an at least two-layer spunbound-meltblown SM or an at least three-layer spunbond-meltblown-spunbond SMS.
    Type: Grant
    Filed: September 24, 1997
    Date of Patent: July 27, 1999
    Assignee: Poly-Bond Inc.
    Inventors: Carl Allen Bodford, Roe Clyde Allen, Rahul Krishnakant Nayak
  • Patent number: 5705011
    Abstract: A composite includes a first substrate, a second substrate, and a discontinuous adhesive structure disposed intermediate the first and second substrates for securing the first and second substrates together to form a composite without significantly modifying the properties of either of the first and second substrates. The discontinuous adhesive structure is an array of substantially linear filaments or strands of an adhesive.
    Type: Grant
    Filed: February 15, 1995
    Date of Patent: January 6, 1998
    Assignee: Poly-Bond, Inc.
    Inventors: Carl Allen Bodford, Stephen O. Chester, Rahul Krishnakant Nayak
  • Patent number: 5643239
    Abstract: A breathable diaper, feminine hygiene, or like disposable sanitary product construction includes a plurality of materials comprising, from the skin-facing side outwardly a topsheet of liquid- and vapor-permeable hydrophilic material. A core of highly absorbent material disposed outwardly of the topsheet for absorbing fluid received through said topsheet. The core has an inner surface in fluid communication with the topsheet, an outer surface and two lateral side surfaces. A barrier is formed of a multilayer non-woven material which is hydrophobic and vapor-permeable for limiting the outward escape of fluid therethrough while enabling the outward escape of heat and water vapor therethrough, such as a two-layer spunbond-meltblown or a three-layer spunbond-meltblown-spunbond.
    Type: Grant
    Filed: November 3, 1995
    Date of Patent: July 1, 1997
    Assignee: Poly-Bond, Inc.
    Inventors: Carl Allen Bodford, Rahul Krishnakant Nayak