Patents by Inventor Wataru IZUI

Wataru IZUI 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).

  • Publication number: 20240009134
    Abstract: A preparation containing saxagliptin having improved stability and a method for producing the same are provided. According to an embodiment of the present invention, a preparation containing saxagliptin including a plain tablet part containing one or more first additive agent selected from a group consisting of D-mannitol, lactose, anhydrous lactose, and anhydrous dibasic calcium phosphate, the plain tablet part containing less than 35% by weight of crystalline cellulose with respect to 100% by weight of the plain tablet part, and a film coating part in contact with the plain tablet part and containing saxagliptin, a salt thereof, or a hydrate thereof, and a method for producing the same are provided.
    Type: Application
    Filed: September 22, 2023
    Publication date: January 11, 2024
    Inventors: Kenji NOZAWA, Wataru IZUI, Ayane NATSUME, Daiki BIRUKAWA
  • Patent number: 11786472
    Abstract: A preparation containing saxagliptin having improved stability and a method for producing the same are provided. According to an embodiment of the present invention, a preparation containing saxagliptin including a plain tablet part containing one or more first additive agent selected from a group consisting of D-mannitol, lactose, anhydrous lactose, and anhydrous dibasic calcium phosphate, the plain tablet part containing less than 35% by weight of crystalline cellulose with respect to 100% by weight of the plain tablet part, and a film coating part in contact with the plain tablet part and containing saxagliptin, a salt thereof, or a hydrate thereof, and a method for producing the same are provided.
    Type: Grant
    Filed: June 22, 2021
    Date of Patent: October 17, 2023
    Assignee: SAWAI PHARMACEUTICAL CO., LTD.
    Inventors: Kenji Nozawa, Wataru Izui, Ayane Natsume, Daiki Birukawa
  • Publication number: 20220370365
    Abstract: A solid preparation containing tafamidis includes tafamidis, and a carrier containing one or more selected from a group consisting of magnesium aluminometasilicate, microcrystalline cellulose, low substituted hydroxypropyl cellulose, crospovidone and calcium silicate, and a method for producing the same are provided.
    Type: Application
    Filed: May 18, 2022
    Publication date: November 24, 2022
    Inventors: Wataru IZUI, Daiki BIRUKAWA, Ayane NATSUME
  • Publication number: 20210393534
    Abstract: The present invention provides a film coating composition for a solid preparation that is easy to take. The present invention also provides a solid preparation that is easy to take. A film coating composition according to an embodiment of the present invention contains a polyvinyl alcohol-polyethylene glycol graft copolymer and a thickening agent. The thickening agent may be composed of one or more substances that are selected from the group consisting of xanthan gum, locust bean gum, pectin, carrageenan, guar gum, gellan gum, and carboxy vinyl polymer.
    Type: Application
    Filed: September 1, 2021
    Publication date: December 23, 2021
    Inventors: Wataru IZUI, Katsuki NAKAMICHI, Takuya MATSUKAWA, Hiroaki KIKUOKA
  • Publication number: 20210393532
    Abstract: A preparation containing saxagliptin having improved stability and a method for producing the same are provided. According to an embodiment of the present invention, a preparation containing saxagliptin including a plain tablet part containing one or more first additive agent selected from a group consisting of D-mannitol, lactose, anhydrous lactose, and anhydrous dibasic calcium phosphate, the plain tablet part containing less than 35% by weight of crystalline cellulose with respect to 100% by weight of the plain tablet part, and a film coating part in contact with the plain tablet part and containing saxagliptin, a salt thereof, or a hydrate thereof, and a method for producing the same are provided.
    Type: Application
    Filed: June 22, 2021
    Publication date: December 23, 2021
    Inventors: Kenji NOZAWA, Wataru IZUI, Ayane NATSUME, Daiki BIRUKAWA
  • Patent number: 11173122
    Abstract: Provided is a novel additive for an orally disintegrating tablet which imparts a rapid disintegration property and a tablet hardness to the orally disintegrating tablet and a method for producing the same. An additive for an orally disintegrating tablet according to one embodiment of the present invention includes a D-mannitol, a low-substituted hydroxypropyl cellulose (excluding those having a mean particle size of 20 ?m or less and a substitution degree of the hydroxypropoxy groups of 11%, having a mean particle size of 45 ?m or less and a substitution degree of the hydroxypropoxy groups of 14% and having a mean particle size of 45 ?m or less and a substitution degree of the hydroxypropoxy groups of 11% together with a 90% cumulated particle size of 100 ?m or less), a crospovidone and a crystalline cellulose.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: November 16, 2021
    Assignee: SAWAI PHARMACEUTICAL Co., Ltd.
    Inventors: Yoichi Higashiyama, Wataru Izui, Ayako Harada, Satoru Ogihara, Kenji Nozawa, Hiroaki Kikuoka
  • Patent number: 11167031
    Abstract: Provided is a novel additive for an orally disintegrating tablet providing quick disintegrability and tablet hardness to the orally disintegrating tablet, and a producing method therefor. According to an embodiment of the present invention, there is provided an additive for an orally disintegrating tablet characterized by including D-mannitol, low-substituted hydroxypropyl cellulose (however, excluding the low-substituted hydroxypropyl cellulose having a mean particle size of 20 ?m or less and a substitution degree of hydroxypropoxy groups of 11%, a mean particle size of 45 ?m or less and a substitution degree of hydroxypropoxy groups of 14%, and a mean particle size of 45 ?m or less and a substitution degree of hydroxypropoxy groups of 11% and a 90% cumulated particle size of 100 ?m or less), crospovidone, and microcrystalline cellulose, wherein the low-substituted hydroxypropyl cellulose and the crospovidone are included in a ratio of 5:4.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: November 9, 2021
    Assignee: SAWAI PHARMACEUTICAL Co., Ltd.
    Inventors: Yoichi Higashiyama, Wataru Izui, Ayako Harada, Satoru Ogihara, Kenji Nozawa, Hiroaki Kikuoka
  • Publication number: 20210251904
    Abstract: A method for producing granules containing a core particle by using a general granulation method is provided. Granules containing a core particle produced by the method are provided. In addition, a pharmaceutical composition and preparation containing the granules containing the core particle are provided. The granulation method according to an embodiment of the present invention granulates by splaying granulation liquid having a mist diameter (D50) not more than the particle size (D50) of the core particle on a mixture containing a drug substance and a core particle. The granulation liquid may be water. The particle size of the core particle (D50) may be larger than the particle size (D50) of the drug substance.
    Type: Application
    Filed: February 8, 2021
    Publication date: August 19, 2021
    Inventors: Wataru IZUI, Kenji NOZAWA, Hiroyuki YAMAMOTO, Ryota KIMATA, Naoki YOSHIHARA
  • Publication number: 20190201529
    Abstract: Provided is a novel additive for an orally disintegrating tablet providing quick disintegrability and tablet hardness to the orally disintegrating tablet, and a producing method therefor. According to an embodiment of the present invention, there is provided an additive for an orally disintegrating tablet characterized by including D-mannitol, low-substituted hydroxypropyl cellulose (however, excluding the low-substituted hydroxypropyl cellulose having a mean particle size of 20 ?m or less and a substitution degree of hydroxypropoxy groups of 11%, a mean particle size of 45 ?m or less and a substitution degree of hydroxypropoxy groups of 14%, and a mean particle size of 45 ?m or less and a substitution degree of hydroxypropoxy groups of 11% and a 90% cumulated particle size of 100 ?m or less), crospovidone, and microcrystalline cellulose, wherein the low-substituted hydroxypropyl cellulose and the crospovidone are included in a ratio of 5:4.
    Type: Application
    Filed: March 6, 2019
    Publication date: July 4, 2019
    Inventors: Yoichi HIGASHIYAMA, Wataru IZUI, Ayako HARADA, Satoru OGIHARA, Kenji NOZAWA, Hiroaki KIKUOKA
  • Publication number: 20190151247
    Abstract: Provided is a novel additive for an orally disintegrating tablet which imparts a rapid disintegration property and a tablet hardness to the orally disintegrating tablet and a method for producing the same. An additive for an orally disintegrating tablet according to one embodiment of the present invention includes a D-mannitol, a low-substituted hydroxypropyl cellulose (excluding those having a mean particle size of 20 ?m or less and a substitution degree of the hydroxypropoxy groups of 11%, having a mean particle size of 45 ?m or less and a substitution degree of the hydroxypropoxy groups of 14% and having a mean particle size of 45 ?m or less and a substitution degree of the hydroxypropoxy groups of 11% together with a 90% cumulated particle size of 100 ?m or less), a crospovidone and a crystalline cellulose.
    Type: Application
    Filed: January 25, 2019
    Publication date: May 23, 2019
    Inventors: Yoichi HIGASHIYAMA, Wataru IZUI, Ayako HARADA, Satoru OGIHARA, Kenji NOZAWA, Hiroaki KIKUOKA
  • Publication number: 20150335579
    Abstract: Provided is a stable multilayer tablet containing telmisartan and hydrochlorothiazide, in which the decomposition of hydrochlorothiazide during storage, etc., is suppressed. A multilayer tablet comprising a first layer containing telmisartan, meglumine, and a moisture-absorbing substance and a second layer containing hydrochlorothiazide is provided. The moisture-absorbing substance may be a porous moisture-absorbing substance. The porous moisture-absorbing substance may be selected from light anhydrous silicic acid, synthetic aluminum silicate, natural aluminum silicate, calcium silicate, magnesium silicate, magnesium aluminosilicate, magnesium aluminometasilicate, hydrated silicon dioxide, and silicon dioxide.
    Type: Application
    Filed: July 31, 2015
    Publication date: November 26, 2015
    Inventors: Wataru IZUI, Yoshiyuki Ogawa, Mami Katsumoto, Masaya Hizaki