Patents by Inventor Mohamed Mahmoud Hashem

Mohamed Mahmoud Hashem 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).

  • Product and method for treating cotton
    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
  • Product and method for treating cotton
    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