Patents by Inventor Kazuko Yuzawa

Kazuko Yuzawa 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).

  • CRYSTALS OF NON-NATURAL-TYPE STEREOISOMER SALT OF MONATIN AND USE THEREOF
    Publication number: 20120295004
    Abstract: The present invention provides salt crystals of non-natural stereoisomer forms of monatin and to the use thereof.
    Type: Application
    Filed: July 26, 2012
    Publication date: November 22, 2012
    Applicant: Ajinomoto Co., Inc.
    Inventors: Yusuke AMINO, Kazuko Yuzawa, Kenichi Mori, Tadashi Takemoto
  • CRYSTALS OF NON-NATURAL-TYPE STEREOISOMER SALT OF MONATIN AND USE THEREOF
    Publication number: 20110189368
    Abstract: The present invention provides salt crystals of non-natural stereoisomer forms of monatin and to the use thereof.
    Type: Application
    Filed: April 6, 2011
    Publication date: August 4, 2011
    Applicant: Ajinomoto Co., Inc.
    Inventors: Yusuke AMINO, Kazuko YUZAWA, Kenichi MORI, Tadashi TAKEMOTO
  • Crystals of non-natural-type stereoisomer salt of monatin and use thereof
    Patent number: 7951835
    Abstract: The present invention provides salt crystals of non-natural stereoisomer forms of monatin and to the use thereof.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: May 31, 2011
    Assignee: Ajinomoto Co., Inc.
    Inventors: Yusuke Amino, Kazuko Yuzawa, Kenichi Mori, Tadashi Takemoto
  • CRYSTALS OF NON-NATURAL-TYPE STEREOISOMER SALT OF MONATIN AND USE THEREOF
    Publication number: 20100330245
    Abstract: The present invention provides salt crystals of non-natural stereoisomer forms of monatin and to the use thereof.
    Type: Application
    Filed: June 29, 2010
    Publication date: December 30, 2010
    Applicant: Ajinomoto Co., Inc.
    Inventors: Yusuke Amino, Kazuko Yuzawa, Kenichi Mori, Tadashi Takemoto
  • Crystals of non-natural-type stereoisomer salt of monatin and use thereof
    Patent number: 7795296
    Abstract: The present invention provides salt crystals of non-natural stereoisomer forms of monatin and to the use thereof.
    Type: Grant
    Filed: June 1, 2004
    Date of Patent: September 14, 2010
    Assignee: Ajinomoto Co., Inc.
    Inventors: Yusuke Amino, Kazuko Yuzawa, Kenichi Mori, Tadashi Takemoto
  • N-alkylaspartyl dipeptide ester compounds
    Patent number: 7238830
    Abstract: The present invention provides N-alkylaspartyl dipeptideester compounds and salts thereof, such as N-[N-[3-(3-hydroxy-4-methoxyphenyl)-3-methylbutyl]-L-?-aspartyl]-L-phenylalanine 1-methyl ester, which provide high degrees of sweetness in comparison to conventional products, compositions and products containing the novel aspartyl dipeptide ester compounds and method of producing the novel aspartyl dipeptide ester compounds.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: July 3, 2007
    Assignee: Ajinomoto Co., Inc.
    Inventors: Yusuke Amino, Kazuko Yuzawa, Tadashi Takemoto, Ryoichiro Nakamura
  • N-alkylaspartyl amide derivative and sweetening agent
    Patent number: 7115296
    Abstract: The present invention relates to a novel N-alkylaspartyl amide derivative, a salt form thereof, a sweetening agent containing the same and a sweetened food or drink containing the N-alkylaspartyl amide derivative as an effective ingredient.
    Type: Grant
    Filed: August 8, 2003
    Date of Patent: October 3, 2006
    Assignee: Ajinomoto Co., Inc.
    Inventors: Yusuke Amino, Kazuko Yuzawa
  • Method for producing Aspartame derivative, method for purifying the same, crystals thereof and uses of the same
    Patent number: 6939987
    Abstract: N-[N-[3-(3-methoxy-4-hydroxyphenyl)propyl]-L-?-aspartyl]-L-phenylalanine 1-methyl ester is prepared by a process comprising: subjecting Aspartame and 3-(3-methoxy-4-hydroxyphenyl)propionaldehyde or derivatives thereof to reductive alkylation in a solvent to produce N-[N-[3-(3-methoxy-4-hydroxyphenyl)propyl]-L-?-aspartyl]-L-phenylalanine 1-methyl ester; and crystallizing said compound.
    Type: Grant
    Filed: September 8, 2003
    Date of Patent: September 6, 2005
    Assignee: Ajinomoto Co., Inc.
    Inventors: Yusuke Amino, Kazuko Yuzawa, Tadashi Takemoto
  • Method for producing aspartame derivative, method for purifying the same, crystals thereof and uses of the same
    Patent number: 6899912
    Abstract: N-[N-[3-(3-methoxy-4-hydroxyphenyl)propyl]-L-?-aspartyl]-L-phenylalanine 1-methyl ester is prepared by a process comprising: subjecting Aspartame and 3-(3-methoxy-4-hydroxyphenyl)propionaldehyde or derivatives thereof to reductive alkylation in a solvent to produce N-[N-[3-(3-methoxy-4-hydroxyphenyl)propyl]-L-?-aspartyl]-L-phenylalanine 1-methyl ester; and crystallizing said compound.
    Type: Grant
    Filed: March 7, 2002
    Date of Patent: May 31, 2005
    Assignee: Ajinomoto Co., Inc.
    Inventors: Yusuke Amino, Kazuko Yuzawa, Tadashi Takemoto
  • Crystals of non-natural-type stereoisomer salt of monatin and use thereof
    Publication number: 20050020508
    Abstract: The present invention provides salt crystals of non-natural stereoisomer forms of monatin and to the use thereof.
    Type: Application
    Filed: June 1, 2004
    Publication date: January 27, 2005
    Applicant: Ajinomoto CO., Inc.
    Inventors: Yusuke Amino, Kazuko Yuzawa, Kenichi Mori, Tadashi Takemoto
  • Novel N-alkylaspartyl amide derivative and sweetening agent
    Publication number: 20040071851
    Abstract: The present invention relates to a novel N-alkylaspartyl amide derivative, a salt form thereof, a sweetening agent containing the same and a sweetened food or drink containing the N-alkylaspartyl amide derivative as an effective ingredient.
    Type: Application
    Filed: August 8, 2003
    Publication date: April 15, 2004
    Applicant: AJINOMOTO CO. INC
    Inventors: Yusuke Amino, Kazuko Yuzawa
  • Method for producing Aspartame derivative, method for purifying the same, crystals thereof and uses of the same
    Publication number: 20040049066
    Abstract: N-[N-[3-(3-methoxy-4-hydroxyphenyl)propyl]-L-&agr;-aspartyl]-L-phenylalanine 1-methyl ester is prepared by a process comprising:
    Type: Application
    Filed: September 8, 2003
    Publication date: March 11, 2004
    Applicant: AJINOMOTO CO. INC
    Inventors: Yusuke Amino, Kazuko Yuzawa, Tadashi Takemoto
  • Aspartyl dipeptide ester derivatives and sweeteners
    Patent number: 6649784
    Abstract: Aspartyl dipeptide ester derivatives, such as a N-[N-[3-(3,4-dihydroxyphenyl)-3-methylbutyl]-L-&agr;-aspartyl]-L-phenylalanine 1-methyl ester, or salts thereof, having a high degree of sweetness compared to conventional sweeteners. These derivatives are excellent in sweetening potency and may be used as sweetener components in products such as foods and drinks. They may also be used as low calorie sweeteners and in methods of sweetening products. Foods and drinks comprising these derivatives as well as methods for their production.
    Type: Grant
    Filed: April 1, 2002
    Date of Patent: November 18, 2003
    Assignee: Ajinomoto Co., Inc.
    Inventors: Yusuke Amino, Tadashi Takemoto, Kazuko Yuzawa, Ryoichiro Nakamura
  • Aspartyl dipeptide ester derivatives and sweeteners
    Patent number: 6630191
    Abstract: The present invention relates to novel, aspartyl dipeptide ester derivatives and salts thereof, such as N-[N-(3-(3-hydroxy-4-methoxyphenyl)propyl]-L-&agr;-aspartyl]-L-(&agr;-methyl)phenylalanine 1-methyl ester which provide high degrees of sweetness in comparison to conventional products, compositions and products containing the novel aspartyl dipeptide ester derivatives and method of producing the novel aspartyl dipeptide ester derivatives.
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: October 7, 2003
    Assignee: Ajinomoto Co., Inc.
    Inventors: Yusuke Amino, Kazuko Yuzawa, Tadashi Takemoto, Ryoichiro Nakamura
  • Aspartyl dipeptide ester derivatives and sweeteners
    Patent number: 6548096
    Abstract: Low-calory sweeteners comprising novel aspartyl dipeptide ester derivatives and their salts have a sweetening potency of up to 35000 times that of sugar and include compounds such as N-[N-[3-(3-methyl-4-hydroxyphenyl)propyl]-L-&agr;-aspartyl]-L-phenylalanine 1-methyl ester and N-[N-[3-(3-hydroxy-4-methoxyphenyl)propyl]-L-&agr;-aspartyl]-L-phenylalanine 1-methyl ester.
    Type: Grant
    Filed: October 10, 2000
    Date of Patent: April 15, 2003
    Assignee: Ajinomoto Co., Inc.
    Inventors: Yusuke Amino, Kazuko Yuzawa, Tadashi Takemoto, Ryoichiro Nakamura
  • Aspartyl dipeptide ester derivatives and sweeteners
    Publication number: 20030065210
    Abstract: Aspartyl dipeptide ester derivatives, such as a N-[N-[3-(3,4-dihydroxyphenyl)-3-methylbutyl]-L-&agr;-aspartyl]-L-phenylalanine 1-methyl ester, or salts thereof, having a high degree of sweetness compared to conventional sweeteners. These derivatives are excellent in sweetening potency and may be used as sweetener components in products such as foods and drinks. They may also be used as low calorie sweeteners and in methods of sweetening products. Foods and drinks comprising these derivatives as well as methods for their production.
    Type: Application
    Filed: April 1, 2002
    Publication date: April 3, 2003
    Applicant: AJINOMOTO CO. INC.
    Inventors: Yusuke Amino, Tadashi Takemoto, Kazuko Yuzawa, Ryoichiro Nakamura
  • Method for producing aspartame derivative, method for purifying the same, crystals thereof and uses of the same
    Publication number: 20020147361
    Abstract: N-[N-[3-(3-methoxy-4-hydroxyphenyl)propyl]-L-&agr;-aspartyl]-L-phenylalanine 1-methyl ester is prepared by a process comprising:
    Type: Application
    Filed: March 7, 2002
    Publication date: October 10, 2002
    Applicant: AJINOMOTO CO. INC
    Inventors: Yusuke Amino, Kazuko Yuzawa, Tadashi Takemoto
  • N-alkylaspartyl dipeptide ester compounds
    Publication number: 20010039357
    Abstract: The present invention provides N-alkylaspartyl dipeptideester compounds and salts thereof, such as N-[N-[3-(3-hydroxy-4-methoxyphenyl)-3-methylbutyl]-L-&agr;-aspartyl]-L-phenylalanine 1-methyl ester, which provide high degrees of sweetness in comparison to conventional products, compositions and products containing the novel aspartyl dipeptide ester compounds and method of producing the novel aspartyl dipeptide ester compounds.
    Type: Application
    Filed: March 16, 2001
    Publication date: November 8, 2001
    Applicant: AJINOMOTO CO., INC.
    Inventors: Yusuke Amino, Kazuko Yuzawa, Tadashi Takemoto, Ryoichiro Nakamura