Patents by Inventor Warren Francis Knoff

Warren Francis Knoff 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: 20090094754
    Abstract: A foam core article such as a mattress or pillow is covered on a surface with a flexible heat-resistant knitted fabric. Preferably a further sacrificial fabric also is used to allow passage of CPSC 16 CFR 1633 with a peak heat release of no more than 200 kilowatts in a 30 minute time period following ignition.
    Type: Application
    Filed: September 24, 2008
    Publication date: April 16, 2009
    Inventors: Walter Randall Hall, III, Warren Francis Knoff, Llewellyn Bentley Richardson, III
  • Publication number: 20090075033
    Abstract: A multiple sheet building wrap for wrapping the structural components of a building in order to protect the underlying structural components from moisture is provided. The building wrap is particularly useful under facades such as wet applied stucco or engineered stone, demonstrating good drainage of liquid water and moisture vapor permeability. The building wrap is a composite of a water resistive barrier and a porous intervening layer which acts as a barrier to stucco as it is applied. An exterior wall construction incorporating such building wrap is also provided.
    Type: Application
    Filed: September 14, 2007
    Publication date: March 19, 2009
    Inventors: Theresa Ann Weston, Barbara Klimowicz O'Rourke, Mieczyslaw (Michel) Stachnik, Warren Francis Knoff, Wazir Nobbee, Kimdolyn Boone
  • Publication number: 20090061717
    Abstract: A foam core article such as a mattress or pillow is covered on a surface with a flexible heat-resistant knitted fabric. Preferably a further sacrificial fabric also is used to allow passage of CPSC 16 CFR 1633 with a peak heat release of less than 250 kilowatts in a 30 minute time period following ignition.
    Type: Application
    Filed: August 31, 2007
    Publication date: March 5, 2009
    Inventors: Walter Randall Hall, III, Warren Francis Knoff
  • Publication number: 20090056029
    Abstract: A foam core article such as a mattress or pillow is covered on a surface with a flexible heat-resistant knitted fabric. Preferably a further sacrificial fabric also is used to allow passage of CPSC 16 CFR 1633 with a peak heat release of no more than 200 kilowatts in a 30 minute time period following ignition.
    Type: Application
    Filed: February 28, 2008
    Publication date: March 5, 2009
    Inventors: Walter Randall Hall, III, Warren Francis Knoff
  • Publication number: 20080189840
    Abstract: The present invention concerns thermal liner comprising crimped, heat resistant fibers held in a state of compression by a thermoplastic binder, wherein when the thermal liner is exposed to heat or flame, the liner increases its thickness by at least three times. The invention also relates to use of such barriers in protective fabrics, garments, and articles.
    Type: Application
    Filed: February 9, 2007
    Publication date: August 14, 2008
    Inventors: Warren Francis Knoff, Richard Hall Young
  • Publication number: 20080153373
    Abstract: An abrasion resistant nonwoven fabric for fire blocking an article such as a mattress, comprising a layer of fibers comprising a mixture of crimped, heat-resistant organic fibers and thermoplastic binder fibers compressed on a spunbonded thermoplastic nonwoven sheet; the layer of fibers being held in a compressed state and to the spunbonded sheet solely by the adhesion of the thermoplastic binder fibers to the heat-resistant organic fibers and to the spunbonded sheet; and wherein when the fabric is exposed to heat or flame, the fabric increases in thickness by at least one and one half times.
    Type: Application
    Filed: December 22, 2006
    Publication date: June 26, 2008
    Inventors: Walter Randall Hall, Warren Francis Knoff, Reginald Thomas Kruszewski
  • Publication number: 20080120783
    Abstract: An allergen-barrier fabric comprising at least one porous layer of polymeric nanofibers, a fabric layer superjacent and adhered to the nanofiber layer, and optionally a fabric layer subjacent and adhered to the nanofiber layer, wherein the superjacent and optional subjacent fabric layers are adhered to said nanofiber layer such that the allergen-barrier fabric has a mean flow pore size of between about 0.01 ?m and about 10 ?m, and a Frazier air permeability of at least about 1.5 m3/min/m2.
    Type: Application
    Filed: August 17, 2006
    Publication date: May 29, 2008
    Inventors: Warren Francis Knoff, Dariusz Wlodzimierz Kawka
  • Patent number: 5820984
    Abstract: A process for spinning a fully water washed fluorinated olefinic polymer intermediate fiber structure from a mixture of an aqueous dispersion of particles of the fluorinated olefinic polymer and a solution of a cellulosic ether.
    Type: Grant
    Filed: September 18, 1997
    Date of Patent: October 13, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Nicole Lee Blankenbeckler, Joseph Michael Donckers, II, Warren Francis Knoff
  • Patent number: 5762846
    Abstract: A process for spinning a fully water washed fluorinated olefinic polymer intermediate fiber structure from a mixture of an aqueous dispersion of particles of the fluorinated olefinic polymer and a solution of a cellulosic ether.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: June 9, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Nicole Lee Blankenbeckler, Joseph Michael Donckers, II, Warren Francis Knoff
  • Patent number: 5723081
    Abstract: A process for preparing a dispersion spun fluorinated polymer fiber wherein the intermediate fiber structure, immediately before sintering, contains primarily ions characterized as fugitive ions.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: March 3, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Nicole Lee Blankenbeckler, Joseph Michael Donckers, II, Warren Francis Knoff
  • Patent number: 5644909
    Abstract: An alternate twist plied yarn formed from a plurality of strands of singles yarn twisted in alternating directions in lengthwise intervals of first half-cycles of twist at a predetermined twist level followed by second half-cycles of twist at the same twist level with reversal nodes therebetween, the singles twisted yarns being ply-twisted together in alternating directions in lengthwise intervals of first half-cycles of ply-twist followed by second half-cycles of ply-twist, there being a bond formed adjacent each node wherein the first half-cycle of ply-twist is located within the bond and the second half-cycle of ply-twist originates at one end of the bond, the twist level in the singles twisted yarn is between 25% in the same direction and 60% in the opposite direction of the twist applied to the singles yarns before plying.
    Type: Grant
    Filed: September 10, 1996
    Date of Patent: July 8, 1997
    Assignee: E.I. Du Pont de Nemours and Company
    Inventors: Warren Francis Knoff, Robert William McAllister, Peter Popper, Steven Kikuo Shibata, Robert Edward Taylor, Paul Wesley Yngve