Patents by Inventor Danielle E. Harkins

Danielle E. Harkins 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).

  • Aldehyde modified cellulose pulp for the preparation of high strength paper products
    Patent number: 6695950
    Abstract: Paper comprising aldehyde modified cellulose pulp having selected aldehyde content. Another embodiment involves a method of preparing celullose aldehydes using selective oxidation with a limited amount of oxidant and a nitroxyl radical mediator and defined reaction conditions to provide oxidized cellulose material with effective aldehyde content making it particularly suitable for use in making paper with desirable wet strength, temporary wet strength and dry strength properties, including compressive strength and resistance.
    Type: Grant
    Filed: August 14, 2000
    Date of Patent: February 24, 2004
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: A. Levent Cimecioglu, Danielle E. Harkins, Michele Merrette, Robert D. Rossi
  • Paper prepared from aldehyde modified cellulose pulp
    Patent number: 6562195
    Abstract: Paper comprising aldehyde modified cellulose pulp having selected aldehyde content. Another embodiment involves a method of preparing celullose aldehydes using selective oxidation with a limited amount of oxidant and a nitroxyl radical mediator and defined reaction conditions to provide oxidized cellulose material with effective aldehyde content making it particularly suitable for use in making paper with desirable wet strength, temporary wet strength and dry strength properties.
    Type: Grant
    Filed: January 4, 2001
    Date of Patent: May 13, 2003
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: A. Levent Cimecioglu, Danielle E. Harkins
  • Use of amide or imide co-catalysts for nitroxide mediated oxidation
    Patent number: 6540876
    Abstract: This invention pertains to the use of compounds containing amide or imide type functional groups to increase the rate of nitroxide mediated oxidation of alcohols, particularly primary and secondary alcohols. While suitable for oxidation of alcohol groups on a variety of substrates, it is particularly useful to oxidize cellulose, cellulose pulp or cellulose fiber such that it is commercially compatible with the traditional paper making process. Such co-catalysts may be used to increase the absolute amount of aldehyde groups on cellulose, cellulose pulp or cellulose fiber, thereby further increasing the inherent wet strength, temporary wet strength, and dry strength of paper made with such cellulose, cellulose pulp or cellulose fiber.
    Type: Grant
    Filed: May 19, 2000
    Date of Patent: April 1, 2003
    Assignee: National Starch and Chemical Ivnestment Holding Corporation
    Inventors: A. Levent Cimecioglu, John S. Thomaides, Kraig A. Luczak, Danielle E. Harkins
  • Paper prepared from aldehyde modified cellulose pulp and the method of making the pulp
    Publication number: 20020005262
    Abstract: Paper comprising aldehyde modified cellulose pulp having selected aldehyde content. Another embodiment involves a method of preparing celullose aldehydes using selective oxidation with a limited amount of oxidant and a nitroxyl radical mediator and defined reaction conditions to provide oxidized cellulose material with effective aldehyde content making it particularly suitable for use in making paper with desirable wet strength, temporary wet strength and dry strength properties.
    Type: Application
    Filed: January 4, 2001
    Publication date: January 17, 2002
    Inventors: A. Levent Cimecioglu, Danielle E. Harkins
  • Paper prepared from aldehyde modified cellulose pulp and the method of making the pulp
    Patent number: 6228126
    Abstract: Paper comprising aldehyde modified cellulose pulp having selected aldehyde content. Another embodiment involves a method of preparing celullose aldehydes using selective oxidation with a limited amount of oxidant and a nitroxyl radical mediator and defined reaction conditions to provide oxidized cellulose material with effective aldehyde content making it particularly suitable for use in making paper with desirable wet strength, temporary wet strength and dry strength properties.
    Type: Grant
    Filed: August 17, 1999
    Date of Patent: May 8, 2001
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: A. Levent Cimecioglu, Danielle E. Harkins