Patents by Inventor Roger Jeffcoat

Roger Jeffcoat 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: 6664389
    Abstract: Highly resistant granular starches may be produced which have unique and useful properties, including high enzyme resistance, dietary fiber, a unique molecular weight distribution, a high melting temperature and a high heat of gelatinization (Delta H) indicative of excellent processing tolerance. These starches may be prepared for example by heating a high amylose starch having at least 40% by weight amylose content and at a percent moisture and temperature insufficient to destroy the granular nature of the starch, and digesting the amorphous regions using alpha-amylase or a chemical reagent.
    Type: Grant
    Filed: September 27, 2000
    Date of Patent: December 16, 2003
    Assignee: National Starch and Chemical Investment Holding Coporation
    Inventors: Yong-Cheng Shi, Roger Jeffcoat
  • Publication number: 20030108649
    Abstract: The present invention relates to a low amylose tapioca starch. Such starch has excellent solution stability, including freeze-thaw stability, and a chain length distribution similar to that of regular tapioca starch. The starch is useful in a wide variety of food, pharmaceutical, and industrial applications, either with or without chemical modification.
    Type: Application
    Filed: November 19, 2002
    Publication date: June 12, 2003
    Inventors: Roger Jeffcoat, Douglas J. Hanchett, Akash Tayal, Angelica Merk
  • Publication number: 20030094104
    Abstract: The present invention relates to a low amylose tapioca starch crosslinked using mixed adipic and acetic anhydride reagents, and compositions containing such starch. The starch is useful in a wide variety of food, pharmaceutical, and industrial applications to increase the process tolerance of such compositions.
    Type: Application
    Filed: October 22, 2002
    Publication date: May 22, 2003
    Inventors: Roger Jeffcoat, Douglas J. Hanchett, Akash Tayal
  • Patent number: 6541060
    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: January 7, 2002
    Date of Patent: April 1, 2003
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Roger Jeffcoat, William R. Mason, Joseph L. Emling, Chung-Wai Chiu
  • 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
  • Publication number: 20020090446
    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: Application
    Filed: January 7, 2002
    Publication date: July 11, 2002
    Inventors: Roger Jeffcoat, William R. Mason, Joseph L. Emling, Chung-Wai Chiu
  • Publication number: 20020051841
    Abstract: Soluble bulking agents for replacing up to 100% of the sucrose or other soluble, simple carbohydrates in edible formulations are provided. The bulking agents are substantially non-digestible and have an average molecular weight range of 500 to 50,000. Also provided are edible formulations containing these bulking agents and processes for preparing these bulking agents, preferably by enzymatically depolymerizing naturally-occurring, heteropolysaccha-rides such as pectin, tamarind seed gum, guar gun, locust bean (carob seed) gum, konjac gum, xanthan gum, alginates, agar or other food gums to yield a mixture of heteropolysaccharide fragments having an average DP of 3 to 75, preferably 3 to 30. The process employs one or more enzymes such as 1,4-beta-D-Mannarmannohydrolyase, or 1,6-alpha-D-Galactosidase for degrading 1,4-beta-D-linked mannose-containing heteropolysaccharides (e.g.
    Type: Application
    Filed: July 19, 2001
    Publication date: May 2, 2002
    Applicant: National Starch and Chemical Investment Holding Corporation
    Inventors: Chung-Wai Chiu, Matthew J. Henley, James P. Zallie, Roger Jeffcoat
  • Patent number: 6299924
    Abstract: Soluble bulking agents for replacing up to 100% of the sucrose or other soluble, simple carbohydrates in edible formulations are provided. The bulking agents are substantially non-digestible and have an average molecular weight range of 500 to 50,000. Also provided are edible formulations containing these bulking agents and processes for preparing these bulking agents, preferably by enzymatically depolymerizing naturally-occurring, heteropolysaccha-rides such as pectin, tamarind seed gum, guar gum, locust bean (carob seed) gum, konjac gum, xanthan gum, alginates, agar or other food gums to yield a mixture of heteropolysaccharide fragments having an average DP of 3 to 75, preferably 3 to 30. The process employs one or more enzymes such as 1,4-beta-D-Mannanmannohydrolyase, or 1,6-alpha-D-Galactosidase for degrading 1,4-beta-D-linked mannose-containing heteropolysaccharides (e.g.
    Type: Grant
    Filed: June 24, 1998
    Date of Patent: October 9, 2001
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Chung-Wai Chiu, Matthew J. Henley, James P. Zallie, Roger Jeffcoat
  • Publication number: 20010017133
    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: Application
    Filed: March 2, 2001
    Publication date: August 30, 2001
    Inventors: Chung-Wai Chiu, Eleanor Schiermeyer, David J. Thomas, Manish B. Shah, Douglas J. Hanchett, Roger Jeffcoat
  • Patent number: 6277186
    Abstract: The present invention is directed to a process of preparing thermally inhibited starches using the low molecular weight carbohydrates to improve the rate of inhibition. The resulting starch/low molecular weight carbohydrate blends have improved cold storage stability and may be used in a variety of products, particularly food products.
    Type: Grant
    Filed: June 1, 1999
    Date of Patent: August 21, 2001
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Yong-Cheng Shi, Jennifer Goodall, Roger Jeffcoat
  • Patent number: 6261376
    Abstract: Thermally-inhibited, pregelatinized non-granular starches and flours are prepared by pregelatinizing the starch or flour and thermally inhibiting the starch or flour by dehydrating the starch or flour to anhydrous or substantially anhydrous and then heat treating the dehydrated starch. The pregelatinization may be carried out prior to or after the thermal inhibition using known methods which disrupt the granular structure such by drum drying or jet cooking and spray-drying. Preferably the starch or flour is adjusted to a pH above 7.0 prior to the thermal inhibition. The starch may be dehydrated by heating the starch in a suitable heating apparatus, by extracting the water from the starch using a solvent such as ethanol, or by freeze drying the starch. Preferably the starch or flour is treated with a solvent to remove proteins and/or lipids and thus prevent off flavors.
    Type: Grant
    Filed: November 10, 1999
    Date of Patent: July 17, 2001
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Roger Jeffcoat, Chung-Wai Chiu, Manish B. Shah, David J. Thomas, Douglas J. Hanchett
  • Patent number: 6231675
    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: June 7, 1999
    Date of Patent: May 15, 2001
    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: 6221420
    Abstract: A thermally-inhibited granular starch or flour is used as an ingredient in various foods. The thermally-inhibited starches are functionally equivalent to chemically cross-linked starches. The stashes or flours are prepared by dehydrating the starch or flour to anhydrous or substantially anhydrous (<1% moisture), preferably at a neutral or basic pH, and heat treating the dehydrated starch or flour for a time sufficient to inhibit the starch to the desired degree. The dehydration may be carried out by heating the starch, extracting the starch with a solvent, or freeze drying the starch. The starch may be pregelatinized prior to or after thermal inhibition using known methods which do not substantially rupture the starch granules.
    Type: Grant
    Filed: May 29, 1996
    Date of Patent: April 24, 2001
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: David J. Thomas, Chung-Wai Chiu, Eleanor Schiermeyer, Manish B. Shah, Douglas H. Hanchett, Roger Jeffcoat
  • Patent number: 6054302
    Abstract: A high solids, enzyme conversion process for preparing an enzyme-converted starch is carried out by adding to a modified or unmodified starch, preferably a granular starch, water and an enzyme in an amount sufficient to produce a single phase powdered mixture without a visible free water phase. The enzyme is activated by heating while maintaining a substantially constant moisture content in the mixture. The enzyme converted starch is recovered as a syrup, a granular converted starch, or mixtures thereof, or as a powder obtained by drying the syrup.
    Type: Grant
    Filed: May 6, 1996
    Date of Patent: April 25, 2000
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Yong-Cheng Shi, James L. Eden, James J. Kasica, Roger Jeffcoat
  • Patent number: 6010574
    Abstract: Thermally-inhibited, pregelatinized non-granular starches and flours are prepared by pregelatinizing the starch or flour and thermally inhibiting the starch or flour by dehydrating the starch or flour to anhydrous or substantially anhydrous and then heat treating the dehydrated starch. The pregelatinization may be carried out prior to or after the thermal inhibition using known methods which disrupt the granular structure such by drum drying or jet cooking and spray-drying. Preferably the starch or flour is adjusted to a pH above 7.0 prior to the thermal inhibition. The starch may be dehydrated by heating the starch in a suitable heating apparatus, by extracting the water from the starch using a solvent such as ethanol, or by freeze drying the starch. Preferably the starch or flour is treated with a solvent to remove proteins and/or lipids and thus prevent off flavors.
    Type: Grant
    Filed: October 28, 1997
    Date of Patent: January 4, 2000
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Roger Jeffcoat, Chung-Wai Chiu, Manish B. Shah, David J. Thomas, Douglas J. Hanchett
  • Patent number: 5954883
    Abstract: The present invention is directed to a waxy maize starch derived from a single plant which is heterozygous for the recessive sugary-2 allele. Such starch has excellent low temperature and freeze-thaw stability, a relatively high peak viscosity, a relatively high pasting temperature, and intact granules. The starch is useful in a wide variety of food, pharmaceutical, and industrial applications.
    Type: Grant
    Filed: October 8, 1996
    Date of Patent: September 21, 1999
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Barry J. Nagle, Joseph L. Emling, William R. Mason, Roger Jeffcoat
  • Patent number: 5932017
    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.degree. 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: January 29, 1996
    Date of Patent: August 3, 1999
    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: 5871756
    Abstract: Thermally-inhibited starches and flours are used in cosmetic compositions such as skin and hair care products as emulsifiers, thickeners, and aesthetic control agents. The starch or flour is inhibited by dehydrating the starch or flour to anhydrous or substantially anhydrous and then heat treating the dehydrated starch or flour for a time and at a temperature sufficient to inhibit the starch or flour and improve its viscosity stability when dispersed in water. The dehydration may be a thermal or a non-thermal dehydration (e.g., by alcohol extraction or freeze-drying). Preferably, the pH of the starch or flour is adjusted to a neutral or above (e.g., pH 8-9.5) prior to the dehydration and heat treatment.
    Type: Grant
    Filed: January 31, 1996
    Date of Patent: February 16, 1999
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Roger Jeffcoat, Joseph Pasapane, Donna L. Ronco, Daniel B. Solarek, Douglas J. Hanchett
  • Patent number: 5811148
    Abstract: Soluble bulking agents for replacing up to 100% of the sucrose or other soluble, simple carbohydrates in edible formulations are provided. The bulking agents are substantially non-digestible and have an average molecular weight range of 500 to 50,000. Also provided are edible formulations containing these bulking agents and processes for preparing these bulking agents, preferably by enzymatically depolymerizing naturally-occurring, heteropolysaccha-rides such as pectin, guar gum, locust bean (carob seed) gum, konjac gum, xanthan gum, alginates, agar or other food gums to yield a mixture of heteropolysaccharide fragments having an average DP of 3 to 75, preferably 3 to 30. The process employs one or more enzymes such as 1,4-beta-D-Mannanmannohydrolyase, or 1,6-alpha-D-Galactosidase for degrading 1,4-beta-D-linked mannose-containing heteropolysaccharides (e.g.
    Type: Grant
    Filed: February 7, 1996
    Date of Patent: September 22, 1998
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: Chung-Wai Chiu, Matthew J. Henley, James P. Zallie, Roger Jeffcoat