Patents by Inventor Fuan WAN

Fuan WAN 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: 12193467
    Abstract: A method for preventing crystal maltitol from caking in storage, comprising: detecting a temperature and a humidity of a dried crystal maltitol on-line in real time, an on-line temperature and humidity meter being configured to set a sieving and packaging treatment condition, a redrying treatment condition, and an aging treatment condition; performing a sieving and packaging treatment on the crystal maltitol whose temperature and humidity satisfy the sieving and packaging treatment condition, performing a redrying treatment or an aging treatment on the crystal maltitol whose temperature and humidity satisfy the redrying treatment condition or the aging treatment condition; detecting a temperature and a humidity of the crystal maltitol after the redrying treatment or the aging treatment, and performing the sieving and packaging treatment on the crystal maltitol whose temperature and humidity satisfy the sieving and packaging treatment condition, or else continuing with the redrying treatment or the aging treat
    Type: Grant
    Filed: May 6, 2024
    Date of Patent: January 14, 2025
    Assignee: ZHEJIANG HUAKANG PHARMACEUTICAL CO., LTD.
    Inventors: Baoxing Mao, Ling Wan, Jingjing Xu, Zhihui Yao, Bo Xu, Hang Yue, Fuan Wan
  • Publication number: 20240284943
    Abstract: The present disclosure relates to a method for preventing crystal maltitol from caking in storage, comprising: detecting a temperature and a humidity of a dried crystal maltitol on-line in real time, an on-line temperature and humidity meter being configured to set a sieving and packaging treatment condition, a redrying treatment condition, and an aging treatment condition; performing a sieving and packaging treatment on the crystal maltitol whose temperature and humidity satisfy the sieving and packaging treatment condition, performing a redrying treatment or an aging treatment on the crystal maltitol whose temperature and humidity satisfy the redrying treatment condition or the aging treatment condition; detecting a temperature and a humidity of the crystal maltitol after the redrying treatment or the aging treatment, and performing the sieving and packaging treatment after the crystal maltitol on the crystal maltitol whose temperature and humidity satisfy the sieving and packaging treatment condition, or e
    Type: Application
    Filed: May 6, 2024
    Publication date: August 29, 2024
    Applicant: ZHEJIANG HUAKANG PHARMACEUTICAL CO., LTD.
    Inventors: Baoxing MAO, Ling WAN, Jingjing XU, Zhihui YAO, Bo XU, Hang YUE, Fuan WAN
  • Publication number: 20240286983
    Abstract: The present disclosure provides a preparation system and a preparation method for xylitol crystals. In the preparation system, outlets of a first centrifuge are connected with an inlet of a hot air drying tank and an inlet of a primary mother liquor storage tank through pipelines, respectively. Outlets of a second centrifuge are connected with an inlet of a second fluidized bed dryer and an inlet of a secondary mother liquor storage tank through pipelines, respectively. An outlet of a dicrystalline sugar dissolution tank is connected with an inlet of a blending tank through pipeline. An outlet of a tricrystalline sugar dissolution tank is connected with the inlet of the primary mother liquor storage tank. The blending tank is provided with an inlet for a raw material of xylitol hydrogenation solution. An output of an outlet of a first fluidized bed dryer is prepared xylitol crystals.
    Type: Application
    Filed: May 6, 2024
    Publication date: August 29, 2024
    Applicant: ZHEJIANG HUAKANG PHARMACEUTICAL CO., LTD.
    Inventors: Qiang WU, Mian LI, Wulong YANG, Fuan WAN, Weidong XU, Shufang QIN, Hang YUE, Weijia WANG
  • Patent number: 12012430
    Abstract: The present disclosure relates to a method for preparing liquid maltitol and liquid polyols from a raffinate including maltitol. The method comprises the following steps: obtaining a hydrogenated liquid by hydrogenating a pre-treated raffinate including maltitol, obtaining a post-treated liquid by post-treatment of the hydrogenated liquid to remove impurities, obtaining a dilute liquid and a concentrated maltitol solution by membrane-separation of the post-treated liquid, and using the dilute liquid as the liquid polyols, and obtaining the liquid maltitol by mixing the concentrated maltitol solution with a prepared maltitol solution with a maltitol content of over 50%, wherein the liquid maltitol has a maltitol content greater than or equal to 50% and meets a standard. Before the membrane separation process, the present disclosure reduces the reducing sugar content in the liquid by hydrogenation to lower the risk of yellowing during the process and to improve the quality of the final product.
    Type: Grant
    Filed: September 18, 2023
    Date of Patent: June 18, 2024
    Assignee: ZHEJIANG HUAKANG PHARMACEUTICAL CO., LTD.
    Inventors: Yanhui Yao, Xinfeng Han, Fuan Wan, Hang Yue, Weixing Shen, Haojun Dai, Mingqian Yang, Mian Li
  • Publication number: 20240010667
    Abstract: The present disclosure relates to a method for preparing liquid maltitol and liquid polyols from a raffinate including maltitol. The method comprises the following steps: obtaining a hydrogenated liquid by hydrogenating a pre-treated raffinate including maltitol, obtaining a post-treated liquid by post-treatment of the hydrogenated liquid to remove impurities, obtaining a dilute liquid and a concentrated maltitol solution by membrane-separation of the post-treated liquid, and using the dilute liquid as the liquid polyols, and obtaining the liquid maltitol by mixing the concentrated maltitol solution with a prepared maltitol solution with a maltitol content of over 50%, wherein the liquid maltitol has a maltitol content greater than or equal to 50% and meets a standard. Before the membrane separation process, the present disclosure reduces the reducing sugar content in the liquid by hydrogenation to lower the risk of yellowing during the process and to improve the quality of the final product.
    Type: Application
    Filed: September 18, 2023
    Publication date: January 11, 2024
    Applicant: ZHEJIANG HUAKANG PHARMACEUTICAL CO., LTD.
    Inventors: Yanhui YAO, Xinfeng HAN, Fuan WAN, Hang YUE, Weixing SHEN, Haojun DAI, Mingqian YANG, Mian LI