Patents Represented by Attorney Jeffrey M Hoster
  • Patent number: 7351867
    Abstract: The present invention relates to a process of oxidation of alcohols selectively to aldehydes or ketones with molecular oxygen using a TEMPO based catalyst, Fe-bipyridyl or Fe-phenantroline co-catalyst and N-bromosuccinimide promoter in acetic acid solvent. The oxidation takes places at high rates and high aldehyde selectivity at temperatures in the range 45-50° C. and oxygen or air pressures of 0-15 psi. The alcohol conversion of 95-100% and aldehyde selectivity higher than 95% are achieved over 3-4 hours reaction time. Aldehydes such as 3,3-dimethyl-1-butanal can be produced efficiently using the present invention.
    Type: Grant
    Filed: February 24, 2005
    Date of Patent: April 1, 2008
    Assignee: The NutraSweet Company
    Inventors: Setrak K. Tanielyan, Robert L. Augustine, Indra Prakash, Kenneth E. Furlong, Handley E. Jackson
  • Patent number: 7030281
    Abstract: A process for the production of 3,3-dimethylbutyraldehyde is disclosed. The 3,3-dimethylbutyraldehyde is obtained by the reduction of 3,3-dimethylbutyric acid using trimethylacetic anhydride and a phosphine. The 3,3-dimethylbutyric acid is preferably obtained by a process in which tert-butanol and vinylidene chloride are reacted in the presence of sulfuric acid. The disclosed process has improved cost and yield.
    Type: Grant
    Filed: March 18, 2003
    Date of Patent: April 18, 2006
    Assignee: The NutraSweet Company
    Inventors: Indra Prakash, Robert L. Augustine, Setrak K. Tanielyan
  • Patent number: 6825384
    Abstract: The present invention relates to a process of oxidation of alcohols selectively to aldehydes or ketones with NaOCl using a TEMPO—borate catalyst system. It is shown that the oxidation can be efficiently carried out without KBr additives under solvent free conditions. Aldehydes such as 3,3-dimethylbutyraldehyde can be produced efficiently using the present invention.
    Type: Grant
    Filed: January 29, 2004
    Date of Patent: November 30, 2004
    Assignee: The NutraSweet Company
    Inventors: Indra Prakash, Setrak K. Tanielyan, Robert L. Augustine, Kenneth E. Furlong, Robert C. Scherm, Handley E. Jackson
  • Patent number: 6784309
    Abstract: This invention relates to the purification of N-[N-(3,3-dimethylbutyl)-L-&agr;-aspartyl]-L-phenylalanine 1-methyl ester by slurrying a mixture containing N-[N-(3,3-dimethylbutyl)-L-&agr;-aspartyl]-L-phenylalanine 1-methyl ester with organic or aqueous organic solvents.
    Type: Grant
    Filed: April 14, 2000
    Date of Patent: August 31, 2004
    Assignee: The Nutrasweet Company
    Inventors: Indra Prakash, Kurt Wachholder
  • Patent number: 6720446
    Abstract: Processes for using modified catalysts with improved functionality in the production of neotame are disclosed. The modified catalysts surprisingly have been found to improve the selectivity over conventional catalysts and to reduce the level of certain impurities in neotame production processes.
    Type: Grant
    Filed: November 5, 2001
    Date of Patent: April 13, 2004
    Assignee: The NutraSweet Company
    Inventors: Mike G. Scaros, Indra Prakash
  • Patent number: 6506434
    Abstract: The present invention relates to a process for coating N-[N-(3,3-dimethylbutyl)-L-&agr;-aspartyl]-L-phenylalanine 1-methyl ester onto a carrier. The invention also relates to N-[N-(3,3-dimethylbutyl)-L-&agr;-aspartyl]-L-phenylalanine 1-methyl ester coated carrier compositions.
    Type: Grant
    Filed: August 4, 2000
    Date of Patent: January 14, 2003
    Assignee: The NutraSweet Company
    Inventors: Allan Towb, Douglas Nolte
  • Patent number: 6465677
    Abstract: The synthesis of N-[N-(3,3-dimethylbutyl)-L-&agr;-aspartyl]-L-phenylalanine 1-methyl ester via conversion under reducing conditions of novel imidazolidinone(s) is disclosed.
    Type: Grant
    Filed: November 17, 1999
    Date of Patent: October 15, 2002
    Assignee: The NutraSweet Company
    Inventors: Vladislav Orlovski, Indra Prakash, Mike G. Scaros, Christine M. V. Moore
  • Patent number: 6423864
    Abstract: N-[N-(3,3-dimethylbutyl)-L-&agr;-aspartyl]-L-phenylalanine 1-methyl ester is crystallized in order to give highly pure product in high yield. In a preferred embodiment of the present invention, N-[N-(3,3-dimethylbutyl)-L-&agr;-aspartyl]-L-phenylalanine 1-methyl ester is crystallized directly from an aqueous methanol reaction mixture.
    Type: Grant
    Filed: November 24, 1999
    Date of Patent: July 23, 2002
    Assignee: The NutraSweet Company
    Inventors: Indra Prakash, Christine M. V. Moore, Kurt Wachholder
  • Patent number: 6368651
    Abstract: This invention relates to the use of at least one taste modifying ingredient to modify at least one taste characteristic imparted by N-[N-(3,3-dimethylbutyl)-L-&agr;-aspartyl]-L-phenylalanine 1-methyl ester, or neotame, compositions containing the same, and use of modified forms of neotame that possess an improved taste, wherein at least one taste characteristic imparted by neotame is positively affect by the modification of neotame.
    Type: Grant
    Filed: May 10, 2000
    Date of Patent: April 9, 2002
    Assignee: The NutraSweet Company
    Inventors: Paula A. Gerlat, Gale C. Walters, Ihab E. Bishay, Indra Prakash, Tammy C. Jarrett, Nitin Desai, Harold A. Sawyer, Claire-Lise T. Bechert
  • Patent number: 6365217
    Abstract: This invention provides a process for preparing an agglomerate of N-[N-(3,3-dimethylbutyl)-L-&agr;-aspartyl]-L-phenylalanine 1-methyl ester and a carrier including the steps of: (a) providing a premix solution containing N-[N-(3,3-dimethylbutyl)-L-&agr;-aspartyl]-L-phenylalanine 1-methyl ester and a binding agent; (b) fluidizing a carrier; and (c) applying the premix solution of step (a) onto said fluidized carrier to form an agglomerate of said N-[N-(3,3-dimethylbutyl)-L-&agr;-aspartyl]-L-phenylalanine 1-methyl ester and said carrier. This invention is also directed to the novel agglomerates prepared by the process of this invention.
    Type: Grant
    Filed: December 4, 2000
    Date of Patent: April 2, 2002
    Assignee: The Nutra Sweet Company
    Inventors: Jim Fotos, Ihab Bishay
  • Patent number: 6365216
    Abstract: N-[N-(3,3-dimethylbutyl)-L-&agr;-aspartyl]-L-phenylalanine 1-methyl ester is converted from a light powder to relatively dustless, free-flowing particles with and without the use of binders using extrusion and spheronization processes. These particles are suitable for use in a variety of applications. Food products sweetened with extruded or spheronized N-[N-(3,3-dimethylbutyl)-L-&agr;-aspartyl]-L-phenylalanine 1-methyl ester and methods of sweetening food products with such N-[N-(3,3-dimethylbutyl)-L-&agr;-aspartyl]-L-phenylalanine 1-methyl ester are also disclosed.
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: April 2, 2002
    Assignee: The NutraSweet Company
    Inventors: Aditi Dron, Ihab E. Bishay, Jim Fotos, Michael J. Trione
  • Patent number: 5633031
    Abstract: Improved carbonated soft drinks and other beverages sweetened with aspartame and colored by caramel color are disclosed. The beverages contain positively charged caramel color as a substitute for 5-70% of the conventional caramel color used in these beverages, which is negatively charged. The resulting products have improved taste characteristics.
    Type: Grant
    Filed: September 8, 1995
    Date of Patent: May 27, 1997
    Assignee: The NutraSweet Company
    Inventors: Linda J. Zablocki, Allison D. Vevang
  • Patent number: 5597604
    Abstract: A stable, pourable gelled beverage containing gellan gum. A process for preparing a gelled beverage which involves dispersing gellan gum and other beverage ingredients in solution agitating the solution, heating the solution while stirring, and concurrently rapidly cooling and shearing the solution. The beverage, which does not require the presence of other gelling agents or stabilizers, contains between about 0.01% and 0.15% gellan gum.
    Type: Grant
    Filed: September 6, 1995
    Date of Patent: January 28, 1997
    Assignee: Monsanto Company
    Inventors: William F. Chalupa, Alan H. King, Donald A. Giampetro
  • Patent number: 5596084
    Abstract: The invention is a gel comprising water, sodium ions, calcium ions, and about 0.3 and 4% alginate, wherein the ratio of sodium ions to calcium ions is between about 15:1 to about 45:1. In a preferred embodiment of the invention, the alginate comprises mannuronic acid and guluronic acid in a weight ratio of between about 2:1 and 0.35:1.
    Type: Grant
    Filed: October 5, 1994
    Date of Patent: January 21, 1997
    Assignee: Monsanto Company
    Inventors: George R. Sanderson, Dave Ortega, Tom Sifferman
  • Patent number: 5595777
    Abstract: A process for preparing a gel coated food substrate comprising: a) applying an aqueous batter dispersion having sodium ion sources, calcium ion sources or a combination of sodium ion sources and calcium ion sources, to the surface of a food substrate to form a batter-food substrate complex; b) contacting the batter-food substrate complex with a dry bread material to form a breaded complex; and c) applying an aqueous gel-forming solution to the breaded batter-food substrate complex to form a thermally irreversible gel film around the complex.
    Type: Grant
    Filed: May 12, 1995
    Date of Patent: January 21, 1997
    Assignee: Monsanto Company
    Inventors: William F. Chalupa, George R. Sanderson
  • Patent number: 5476961
    Abstract: A one-pot process for the preparation of .alpha.-L-aspartyl-L-phenylalanine methyl ester hydrochloride is disclosed (.alpha.-APM(HCl)). .alpha.-APM(HCl) is an intermediate in the preparation of aspartame.
    Type: Grant
    Filed: June 21, 1993
    Date of Patent: December 19, 1995
    Assignee: The NutraSweet Company
    Inventors: John B. Hill, Yefim Gelman, Hugh L. Dryden, Jr., Robert Erickson, Kuang Hsu, Mark R. Johnson
  • Patent number: 5474791
    Abstract: Tamarind extract is used at low levels as a replacement for the phosphoric, citric or other acids conventionally found in carbonated soft drinks, flavored waters such as flavored waters, and iced teas. The resulting beverage has a higher pH, thus increasing the shelf life of beverages containing aspartame, as well as a flavor profile equivalent or better than conventional beverages sweetened with aspartame.
    Type: Grant
    Filed: October 20, 1993
    Date of Patent: December 12, 1995
    Assignee: The NutraSweet Company
    Inventors: Linda Zablocki, Suzanne Pecore
  • Patent number: 5326908
    Abstract: The present invention is an improved process for the synthesis of asparagine, a non-essential amino acid useful in food and medical applications. The process utilizes mineral acid to make an intermediate beta-methyl aspartate from a reaction mixture of aspartic acid and methanol. The intermediate product is then amminated in situ and asparagine collected with no need for an isolation step of the intermediates.
    Type: Grant
    Filed: December 9, 1992
    Date of Patent: July 5, 1994
    Inventors: Robert Erickson, Ron Bray, Mark Johnson, Loraine Klein, Dennis A. Seagle
  • Patent number: 5183937
    Abstract: A process for recovering acetic acid from a mother liquor containing acetic acid, formic acid, acetic anhydride and formic acetic anhydride comprising the steps of:(a) heating said mother liquor to a temperature greater than or equal to about 70.degree. C. for a time period ranging from about 1 hour to about 24 hours to convert all of said formic acetic anhydride to acetic acid and gaseous carbon monoxide and to fully deplete either said acetic anhydride or said formic acid, whichever is initially present in a stoichiometric lesser amount and thereby produce a mixture comprising acetic acid and either acetic anhydride or formic acid, whichever has been depleted; and(b) separating said acetic acid from the remainder of said mixture produced in step (a) is provided.
    Type: Grant
    Filed: November 21, 1991
    Date of Patent: February 2, 1993
    Assignee: The NutraSweet Company
    Inventor: Mark R. Johnson
  • Patent number: 5176928
    Abstract: A reduced calorie diary mix for use in frozen dairy desserts and yoghurt is made from milk and/or milk products that have been treated with a lactase/beta-galactosidose enzyme which hydrolyzes lactose to glucose and galactose. This increases sweetness, reduces lactose crystallization problems and creates a greater freezing point depression. Aspartame or other high potency sweetners may be added without the need for additional bulking agents and/or bulk sweeteners.
    Type: Grant
    Filed: May 21, 1990
    Date of Patent: January 5, 1993
    Assignee: The NutraSweet Company
    Inventors: William H. Shazer, Jr., Susanne E. Keller, Raymond A. Speckman