Patents by Inventor Katsuro Miyagawa

Katsuro Miyagawa 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: 11873521
    Abstract: The purpose of the present invention is to: determine the structure of a novel steviol glycoside which is detected from species containing a large amount of Reb. C (also referred to as dulcoside B), and a trace amount of which is capable of influencing the quality of taste; and understand the taste characteristics of said steviol glycoside. The present invention provides a compound represented by formula (1) or a salt thereof, or a hydrate thereof.
    Type: Grant
    Filed: March 28, 2018
    Date of Patent: January 16, 2024
    Assignee: SUNTORY HOLDINGS LIMITED
    Inventors: Kazunari Iwaki, Katsuro Miyagawa, Eiichiro Ono, Tadayoshi Hirai, Misa Ochiai, Koji Nagao, Soichiro Urai, Takehiro Watanabe, Kohki Fujikawa
  • Publication number: 20230265530
    Abstract: A method of screening for a stevia plant with high steviol glycoside content, that includes detecting from the genome of a test stevia plant the presence and/or the absence of the following genetic feature: (1) homozygous for the allele wherein the base at the position corresponding to position 290 of SEQ ID NO: 1 is T, and the presence and/or the absence of the following genetic feature: (2) homozygous or heterozygous for the allele wherein the base at the position corresponding to position 40 of SEQ ID NO: 2 is A.
    Type: Application
    Filed: May 11, 2021
    Publication date: August 24, 2023
    Applicant: SUNTORY HOLDINGS LIMITED
    Inventors: Tadayoshi HIRAI, Kazunari IWAKI, Kentaro OCHIAI, Saori TAKEYAMA, Katsuro MIYAGAWA
  • Patent number: 11732313
    Abstract: The present invention provides a high sweet content stevia plant having a variation at a portion corresponding to SEQ ID NO: 1, a method of producing or screening for the same, etc.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: August 22, 2023
    Assignee: SUNTORY HOLDINGS LIMITED
    Inventors: Tadayoshi Hirai, Kazunari Iwaki, Katsuro Miyagawa, Naoko Okitsu, Saori Takeyama
  • Publication number: 20230225273
    Abstract: A method of screening for a stevia plant with high rebaudioside M content ratio, that includes detecting from a test stevia plant the presence and/or absence of at least one of (1) and (2), and at least one of (3) to (7): (1) homozygous for the allele wherein position 290 of SEQ ID NO: 1 is T; (2) homozygous for the allele wherein position 33 of SEQ ID NO: 2 is A; (3) homozygous for the allele wherein position 44 of SEQ ID NO: 3 is T; (4) homozygous for the allele wherein position 40 of SEQ ID NO: 4 is T; (5) homozygous for the allele wherein position 48 of SEQ ID NO: 5 is C; (6) homozygous for the allele wherein positions 55-72 of SEQ ID NO: 6 are deleted; (7) homozygous for the allele wherein position 50 of SEQ ID NO: 7 is A.
    Type: Application
    Filed: May 11, 2021
    Publication date: July 20, 2023
    Applicant: SUNTORY HOLDINGS LIMITED
    Inventors: Tadayoshi HIRAI, Kazunari IWAKI, Kentaro OCHIAI, Saori TAKEYAMA, Katsuro MIYAGAWA
  • Publication number: 20230180690
    Abstract: Provided is a plant having at least one of genetic characteristics (A)-(E) below. (A) Alleles in which the base at the position corresponding to position 40 of SEQ ID:1 is C are homozygous or heterozygous. (B) Alleles in which the base at the position corresponding to position 21 of SEQ ID:2 is T are homozygous or heterozygous. (C) Alleles in which the base at the position corresponding to position 28 of SEQ ID:3 is T are homozygous or heterozygous. (D) Alleles in which the base at the position corresponding to position 59 of SEQ ID:4 is C are homozygous or heterozygous. (E) Alleles in which the base at the position corresponding to position 64 of SEQ ID:5 is T are homozygous or heterozygous.
    Type: Application
    Filed: May 11, 2021
    Publication date: June 15, 2023
    Applicant: SUNTORY HOLDINGS LIMITED
    Inventors: Tadayoshi HIRAI, Kazunari IWAKI, Kentaro OCHIAI, Saori TAKEYAMA, Katsuro MIYAGAWA
  • Publication number: 20230172136
    Abstract: The present invention provides a Stevia plant comprising useful steviol glycoside such as rebaudioside D at higher content as compared with known Stevia species. The present invention also provides a method of producing such a Stevia plant, and a dried leaf and an extract obtainable from such a plant.
    Type: Application
    Filed: May 11, 2021
    Publication date: June 8, 2023
    Applicant: SUNTORY HOLDINGS LIMITED
    Inventors: Tadayoshi HIRAI, Kazunari IWAKI, Kentaro OCHIAI, Saori TAKEYAMA, Katsuro MIYAGAWA
  • Publication number: 20220273008
    Abstract: The present invention provides a plant body containing a compound represented by Formula (1), or a salt or a hydrate thereof: [in the formula: (i) R1 represents Xyl(1-2)Glc1- and R2 represents Glc(1-2)[Glc(1-3)]Glc1- or (ii) R1 represents Glc(1-2)[Glc(1-3)]Glc1- and R2 represents Xyl(1-2)[Glc(1-3)]Glc1- (where Glc stands for glucose and Xyl stands for xylose)].
    Type: Application
    Filed: July 30, 2020
    Publication date: September 1, 2022
    Applicant: SUNTORY HOLDINGS LIMITED
    Inventors: Soichiro URAI, Kazunari IWAKI, Katsuro MIYAGAWA, Tadayoshi HIRAI, Koji NAGAO, Yoshiaki YOKOO, Takehiro WATANABE, Kohki FUJIKAWA
  • Publication number: 20220256902
    Abstract: The present invention provides a novel steviol glycoside containing xylose. According to the present invention, there is provided a compound represented by formula (1), or a salt or hydrate thereof. (In formula, (i) R1 represents Xyl(1-2)Glc1- and R2 represents Glc(1-2)[Glc(1-3)]Glc1-; or (ii) R1 represents Glc(1-2)[Glc(1-3)]Glc1- and R2 represents Xyl(1-2)[Glc(1-3)]Glc1-, where Glc represents glucose and Xyl represents xylose.
    Type: Application
    Filed: July 30, 2020
    Publication date: August 18, 2022
    Applicant: SUNTORY HOLDINGS LIMITED
    Inventors: Soichiro URAI, Kazunari IWAKI, Katsuro MIYAGAWA, Tadayoshi HIRAI, Koji NAGAO, Yoshiaki YOKOO, Takehiro WATANABE, Kohki FUJIKAWA
  • Publication number: 20220217933
    Abstract: A high rebaudioside C-content type, non-genetically modified Stevia plant that has a higher content of rebaudioside C than wild-type Stevia varieties, more specifically at least 20% higher content. A method for producing such a high rebaudioside C-content type, non-genetically modified Stevia plant; and dried leaves obtained from such a plant.
    Type: Application
    Filed: March 25, 2022
    Publication date: July 14, 2022
    Applicant: SUNTORY HOLDINGS LIMITED
    Inventors: Kazunari IWAKI, Eiichiro ONO, Tadayoshi HIRAI, Katsuro MIYAGAWA
  • Patent number: 11284576
    Abstract: An objective of the present invention is to provide a Stevia plant having a high content of rebaudioside C. The present invention provides a high rebaudioside C-content type, non genetically modified Stevia plant that has a higher content of rebaudioside C than wild-type Stevia varieties, more specifically at least 20% higher content. The present invention further provides: a method for producing such a high rebaudioside C-content type, non genetically modified Stevia plant; and dried leaves obtained from such a plant.
    Type: Grant
    Filed: December 26, 2017
    Date of Patent: March 29, 2022
    Assignee: SUNTORY HOLDINGS LIMITED
    Inventors: Kazunari Iwaki, Eiichiro Ono, Tadayoshi Hirai, Katsuro Miyagawa
  • Publication number: 20220087124
    Abstract: The present invention provides a high rebaudioside D-content stevia plant comprising rebaudioside D at higher content as compared with the wild type stevia species. The present invention also provides a method of producing such a high rebaudioside D-content stevia plant, and a dried leaf and an extract obtainable from such a plant.
    Type: Application
    Filed: December 26, 2019
    Publication date: March 24, 2022
    Applicant: SUNTORY HOLDINGS LIMITED
    Inventors: Tadayoshi HIRAI, Kazunari IWAKI, Katsuro MIYAGAWA
  • Publication number: 20220078989
    Abstract: The present invention provides a high broussonetine-content stevia plant comprising broussonetine at higher content as compared with the wild type stevia species. The present invention also provides a method of producing such a high broussonetine-content stevia plant, and a dried leaf and an extract obtainable from such a plant.
    Type: Application
    Filed: December 26, 2019
    Publication date: March 17, 2022
    Applicant: SUNTORY HOLDINGS LIMITED
    Inventors: Tadayoshi HIRAI, Kazunari IWAKI, Katsuro MIYAGAWA
  • Publication number: 20220061248
    Abstract: The present invention provides a low tyramine-content Stevia plant having a lower tyramine content as compared with the wild type Stevia species. The present invention also provides a method of producing such a low tyramine-content Stevia plant, and an extract and a steviol glycoside purified product obtainable from such a plant.
    Type: Application
    Filed: December 26, 2019
    Publication date: March 3, 2022
    Applicant: SUNTORY HOLDINGS LIMITED
    Inventors: Tadayoshi HIRAI, Kazunari IWAKI, Katsuro MIYAGAWA
  • Publication number: 20210246517
    Abstract: The present invention provides a high sweet content stevia plant having a variation at a portion corresponding to SEQ ID NO: 1, a method of producing or screening for the same, etc.
    Type: Application
    Filed: July 30, 2019
    Publication date: August 12, 2021
    Applicant: SUNTORY HOLDINGS LIMITED
    Inventors: Tadayoshi HIRAI, Kazunari IWAKI, Katsuro MIYAGAWA, Naoko OKITSU, Saori TAKEYAMA
  • Publication number: 20200281141
    Abstract: The present invention provides a high rebaudioside M content non-genetically modified stevia plant comprising rebaudioside M at higher content as compared with the wild type stevia species. The present invention also provides a method of producing such a high rebaudioside M content non-genetically modified stevia plant, and a dry leaf obtainable from such a plant.
    Type: Application
    Filed: October 12, 2018
    Publication date: September 10, 2020
    Applicant: SUNTORY HOLDINGS LIMITED
    Inventors: Kazunari IWAKI, Katsuro MIYAGAWA, Tadayoshi HIRAI, Naoko OKITSU, Saori TAKEYAMA
  • Publication number: 20200224235
    Abstract: The purpose of the present invention is to: determine the structure of a novel steviol glycoside which is detected from species containing a large amount of Reb. C (also referred to as dulcoside B), and a trace amount of which is capable of influencing the quality of taste; and understand the taste characteristics of said steviol glycoside. The present invention provides a compound represented by formula (1) or a salt thereof, or a hydrate thereof.
    Type: Application
    Filed: March 28, 2018
    Publication date: July 16, 2020
    Applicant: SUNTORY HOLDINGS LIMITED
    Inventors: Kazunari IWAKI, Katsuro MIYAGAWA, Eiichiro ONO, Tadayoshi HIRAI, Misa OCHIAI, Koji NAGAO, Soichiro URAI, Takehiro WATANABE, Kohki FUJIKAWA
  • Publication number: 20200170209
    Abstract: An objective of the present invention is to provide a stevia plant having a high content of rebaudioside C. The present invention provides a high rebaudioside C-content type, non genetically modified stevia plant that has a higher content of rebaudioside C than wild-type stevia varieties, more specifically at least 20% higher content. The present invention further provides: a method for producing such a high rebaudioside C-content type, non genetically modified stevia plant; and dried leaves obtained from such a plant.
    Type: Application
    Filed: December 26, 2017
    Publication date: June 4, 2020
    Applicant: SUNTORY HOLDINGS LIMITED
    Inventors: Kazunari IWAKI, Eiichiro ONO, Tadayoshi HIRAI, Katsuro MIYAGAWA
  • Publication number: 20190352324
    Abstract: The purpose of the present invention is to determine the structure of a novel steviol glycoside that is detected in cultivers containing an abundance of Reb.C (also called dulcoside B) and that affects the quality of taste in a small amount, and to identify the quality of taste properties. According to the present invention, a compound represented by formula (1), or a derivative, salt, or hydrate thereof is provided.
    Type: Application
    Filed: December 26, 2017
    Publication date: November 21, 2019
    Applicant: SUNTORY HOLDINGS LIMITED
    Inventors: Kazunari IWAKI, Katsuro MIYAGAWA, Eiichiro ONO, Tadayoshi HIRAI, Misa OCHIAI, Koji NAGAO, Soichiro URAI, Takehiro WATANABE, Kohki FUJIKAWA
  • Patent number: 8701344
    Abstract: To provide a plant cultivating substrate which satisfies e.g. the water absorptivity required for plant cultivation, shape retentivity and flexibility and a method of manufacture thereof. In the plant cultivating substrate and the method of its manufacture, at least water-retentive filling material, water, urethane prepolymer and polyol are reacted with each other.
    Type: Grant
    Filed: June 18, 2004
    Date of Patent: April 22, 2014
    Assignee: Suntory Holdings Limitied
    Inventors: Masaki Hashimoto, Katsuro Miyagawa, Katsu Takatsuto
  • Patent number: 8555547
    Abstract: An object of the present invention is to provide a plant cultivating unit that can perform a watering operation in a simple manner and can supply water uniformly to plants in locations where a floor surface is sloped, such as the rooftop of a building, without requiring separate water supply piping work. A plant cultivating unit (1) comprises a water storage tray (2) in which water can be stored and in which receivers (3) for housing the roots of plants can be arranged in an interior thereof, a water storage space (8) in the water storage tray (2) and the receivers (3) being communicated via water feeders (7), and the water stored in the water storage space (8) being able to be supplied to the plants via the water feeders (7).
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: October 15, 2013
    Assignee: Suntory Holdings Limited
    Inventors: Masaki Hashimoto, Katsuro Miyagawa, Masayuki Saito