Patents by Inventor Peter J. Hauser

Peter J. Hauser 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: 7201778
    Abstract: A process for producing an ionic crosslinked fibrous material, such as a cellulosic fabric, paper, or other substrate, wherein the ionic crosslinked fiber exhibits an increased wrinkle resistance angle. A process for producing a cationized chitosan, wherein the cationized chitosan exhibits cationization at the C6 and ring hydroxyl sites and the reactivity of the ring NH2 sites is preserved. A process for applying a polycation to an anionic fibrous material to form an ionic crosslinked fibrous material. A process for producing a cationized fibrous material, wherein the process is performed as a pad-batch process, an exhaust fixation process, a pad-steam process, or a pad-dry-cure process.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: April 10, 2007
    Assignee: North Carolina State University
    Inventors: Carl Brent Smith, Mustafa Bilgen, Peter J. Hauser
  • Patent number: 7179779
    Abstract: A novel cationic bleach activator having an enhanced hydrolytic stability is provided. The novel cationic bleach activator also leads to a reduction in strength loss of cotton fibers compared to conventional hot peroxide bleaching, and achieves this reduction in strength loss without a loss of whiteness. Bleaching compositions and detergent compositions comprising the novel cationic bleach activator also are provided. A method of bleaching cellulosic fibers, such as cotton fibers, and a method for removing a stain or discoloration from an article are further provided.
    Type: Grant
    Filed: January 6, 2006
    Date of Patent: February 20, 2007
    Assignee: North Carolina State University
    Inventors: Peter J. Hauser, David Hinks, Jung Jin Lee, Sang-Hoon Lim
  • Patent number: 7166135
    Abstract: A process for producing an ionic crosslinked fibrous material, such as a cellulosic fabric, paper, or other substrate, wherein the ionic crosslinked fiber exhibits an increased wrinkle resistance angle. A process for producing a cationized chitosan, wherein the cationized chitosan exhibits cationization at the C6 and ring hydroxyl sites and the reactivity of the ring NH2 sites is preserved. A process for applying a polycation to an anionic fibrous material to form an ionic crosslinked fibrous material. A process for producing a cationized fibrous material, wherein the process is performed as a pad-batch process, an exhaust fixation process, a pad-steam process, or a pad-dry-cure process.
    Type: Grant
    Filed: January 13, 2004
    Date of Patent: January 23, 2007
    Assignee: North Carolina State University
    Inventors: Carl Brent Smith, Mohamed Mahmoud Hashem, Peter J. Hauser
  • Publication number: 20040158935
    Abstract: A process for producing an ionic crosslinked fibrous material, such as a cellulosic fabric, paper, or other substrate, wherein the ionic crosslinked fiber exhibits an increased wrinkle resistance angle. A process for producing a cationized chitosan, wherein the cationized chitosan exhibits cationization at the C6 and ring hydroxyl sites and the reactivity of the ring NH2 sites is preserved. A process for applying a polycation to an anionic fibrous material to form an ionic crosslinked fibrous material. A process for producing a cationized fibrous material, wherein the process is performed as a pad-batch process, an exhaust fixation process, a pad-steam process, or a pad-dry-cure process.
    Type: Application
    Filed: January 13, 2004
    Publication date: August 19, 2004
    Applicant: North Carolina State University
    Inventors: Carl Brent Smith, Mohamed Mahmoud Hashem, Peter J. Hauser
  • Patent number: 5667533
    Abstract: Textile fabrics and garments having a random, irregular heather-like appearance are produced by impregnating a textile fabric with an aqueous pretreaement composition comprising a fiber reactive cationic compound, aging the impregnated fabric in a moistened state for about 4 to 24 hours to allow the fiber reactive cationic compound to react with the fibers of the fabric, rinsing the fabric to remove unreacted cationic compound, immersing the fabric in an aqueous bath at a pH of less than 7 and gradually introducing dyestuffs to the bath over a period of at least 15 minutes, and fully exhausting the dyestuffs onto the fabric. The process is applicable for dyeing either piece goods or garments. Where the fabric is in the form of garments, it is preferred that the aging be carried out by storing the garments in an insulated sealed container.
    Type: Grant
    Filed: February 7, 1996
    Date of Patent: September 16, 1997
    Assignee: The Virkler Company
    Inventors: Peter J. Hauser, Stewart G. Helfrich
  • Patent number: 4898596
    Abstract: Aramid and aramid-blend fabrics are dyed and optionally flame-retardant treated using conventional pressure and heat dyeing equipment. Odor-free, colored or colored and highly flame resistant products result.
    Type: Grant
    Filed: January 9, 1989
    Date of Patent: February 6, 1990
    Assignee: Burlington Industries, Inc.
    Inventors: Phillip H. Riggins, Peter J. Hauser
  • Patent number: 4732789
    Abstract: Polyester/cotton and nylon/cotton blends are rendered flame-resistant in a two step process in which a THP salt prepolymer condensate of urea is applied, exposed to ammonia, then oxidized to form a polymer network in the cotton fibers, and cyclic phosphonate ester or hexabromocyclododecane is applied to impart flame resistance to the nylon or polyester fibers. Flame-resistant cotton/synthetic blended fabrics having excellent hand and washfastness result.
    Type: Grant
    Filed: October 28, 1986
    Date of Patent: March 22, 1988
    Assignee: Burlington Industries, Inc.
    Inventors: Peter J. Hauser, Benny L. Triplett, Chumpon Sujarit
  • Patent number: 4164392
    Abstract: Textile materials formed of polyester or nylon fibers having improved durable soil release and moisture transport characteristics are provided by application to the textile material of at least about 0.001 weight percent of a cellulose acetate polymeric constituent having a degree of substitution of the acetyl moiety of from about 0.9 to about 2.3. Such cellulose acetate polymeric constituent are represented by the formula ##STR1## WHEREIN X IS AN INTEGER OF AT LEAST 50, N IS AN INTEGER OF FROM ABOUT 2.1 TO ABOUT 0.7, AND THE EXPRESSION 3-N IS THE DEGREE OF SUBSTITUTION OF THE ACETYL MOIETY. The cellulose acetate polymeric constituent can be applied to the fabric from a pad bath containing the polymeric constituent and a solvent capable of solubilizing the polymeric constituent; by exhaustion techniques during the dyeing of the textile material; or by exhaustion techniques from an aqueous admixture containing finely dispersed particles of the cellulose acetate polymeric constituent.
    Type: Grant
    Filed: December 22, 1977
    Date of Patent: August 14, 1979
    Assignee: Milliken Research Corporation
    Inventors: Peter J. Hauser, Francis W. Marco
  • Patent number: 4144028
    Abstract: Tint compositions for nylon having improved fugitivity properties comprising an admixture of a colorant having the general formulaR--N--[(CH.sub.2 CH.sub.2 O).sub.n H].sub.2 }.sub.xwherein R is an organic dyestuff radical, x is an integer of 1 to 6, and the product of 2n times x is from about 200 to about 300, and a minor effective amount of a free radical inhibitor to retard free radical interaction between the colorant and the nylon.
    Type: Grant
    Filed: September 3, 1976
    Date of Patent: March 13, 1979
    Assignee: Milliken Research Corporation
    Inventors: Peter J. Hauser, James E. Hendrix, Hans H. Kuhn