Patents Represented by Attorney, Agent or Law Firm Laurelee A. Duncan, Esq.
  • 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
  • Patent number: 6488980
    Abstract: Compositions, particularly foodstuffs, were thickened by the inclusion of an effective amount of a stabilized waxy potato starch, particularly a stabilized, crosslinked waxy potato starch, more particularly a hydroxypropylated waxy potato distarch phosphate. Compositions which include the starch may be thickened using less starch than if other starches were used. Foodstuffs prepared using the starch were improved in that they have better flavor, texture, and appearance.
    Type: Grant
    Filed: September 23, 1997
    Date of Patent: December 3, 2002
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Roger Jeffcoat, William R. Mason, Joseph L. Emling, Chung-Wai Chiu
  • Patent number: 6451121
    Abstract: Thermally-inhibited starches and flours which are functionally equivalent to chemically-crosslinked starches are prepared by a process which comprises the steps of dehydrating a granular starch or flour to anhydrous or substantially anhydrous (<1% moisture) and heat treating the dehydrated starch or flour for a time and at a temperature sufficient to inhibit the starch, (e.g., 120-180° C. for up to 20 hours). Preferably the pH of the starch is adjusted to neutral or greater (e.g., pH 8-9.5) prior to the dehydration. The dehydration may be a thermal dehydration carried out simultaneously with the heat treatment or a non-thermal dehydration carried out by extraction with a solvent (e.g., ethanol) or by freeze drying.
    Type: Grant
    Filed: March 2, 2001
    Date of Patent: September 17, 2002
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Chung-Wai Chiu, Eleanor Schiermeyer, David J. Thomas, Manish B. Shah, Douglas J. Hanchett, Roger Jeffcoat
  • Patent number: 6447615
    Abstract: The present invention is directed to sago fluidity starch and the use thereof. Such fluidity starches exhibit exceptionally fast gelling properties, high gel strengths, and exceptional elasticity. These properties allow for significantly reduced processing times, including reduced hold times. Further, the higher gel strength allows for reduced starch levels without loss of final product gel strength integrity or texture.
    Type: Grant
    Filed: August 10, 1999
    Date of Patent: September 10, 2002
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Douglas J. Hanchett, Tunyawat Kasemsuwan, Joseph Light, Ai-Tsing Tan
  • Patent number: 6428836
    Abstract: The present invention is directed to a process of preparing starch phosphate monoesters, optionally in the presence of oligosaccharides, having improved reaction efficiency and reduced side reactions. The invention also includes the improved starch phosphate monoester products, characterized by high viscosity and low level of residual salts, their use in food and the enhanced food compositions prepared from them.
    Type: Grant
    Filed: August 7, 2000
    Date of Patent: August 6, 2002
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Wolfgang Bindzus, Paul A. Altieri, James J. Kasica, Peter T. Trzasko
  • Patent number: 6413372
    Abstract: Paper having improved retention properties made by the addition to the papermaking system of a combination of cationic starch and starch phosphate, the starch combination having a select net zeta potential.
    Type: Grant
    Filed: August 7, 2000
    Date of Patent: July 2, 2002
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Walter Maliczyszyn, Wolfgang Bindzus, Paul A. Altieri
  • Patent number: 6379447
    Abstract: An aqueous, light weight paper laminating adhesive comprising a continuous aqueous phase of from about 15 to 50% by weight of polysaccharide material dispersed in water, the continuous phase polysaccharide material having a zero-shear viscosity of greater than 0.07 Pa·s when measured at 26% (+/−1% solids) and a shear rate of 0.1s−1; a shear-thinning index of 0.90 to 1.1; and bleed time of greater than 15 seconds. Also disclosed is another adhesive composition, which is particularly useful in non-contact spay applications and comprises the continuous phase polysaccharide phase described above as well as a second component comprising a water swellable, insoluble polysaccharide particulate phase.
    Type: Grant
    Filed: April 5, 1999
    Date of Patent: April 30, 2002
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: James L. Eden, Eric M. Weisser, Daniel B. Solarek
  • Patent number: 6372361
    Abstract: A paper coating comprising a hydrophobically modified starch having an amylose content of less than about 40% by weight. The coating provides the paper product with oil and grease resistant properties.
    Type: Grant
    Filed: July 7, 2000
    Date of Patent: April 16, 2002
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Victor L. Mackewicz, Robert L. Billmers, Douglas J. Hanchett
  • Patent number: 6365002
    Abstract: The use in papermaking of an amphoteric starch additive which contains a phosphate functional group and is made under anhydrous conditions while in a fluidized state, provides advantageous paper properties and improved wet end performance.
    Type: Grant
    Filed: August 7, 2000
    Date of Patent: April 2, 2002
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Wolfgang Bindzus, Paul A. Altieri
  • Patent number: 6284359
    Abstract: A biodegradable, water dispersible shaped core product useful in winding or rolling and storage of paper goods is provided by extruding starch which has a particle size of 800 to 1200 microns into an expanded, closed cell starch product.
    Type: Grant
    Filed: September 29, 1997
    Date of Patent: September 4, 2001
    Assignee: National Starch and Chemical Company Investment Holding Corporation
    Inventors: Richard R. Rose, Beth C. Tormey, Paul A. Altieri
  • 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