Patents by Inventor Tong Pu

Tong Pu 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).

  • Method for preparing acyclovir 2/3 hydrate
    Patent number: 9084792
    Abstract: Preparation of acyclovir 2/3 hydrate comprises mixing acyclovir with water at weight ratio of 1:5˜50, dissolving at 50˜100° C., filtering, cooling filtrate at 0˜30° C. to precipitate crystal, collecting the crystal by filtration, and drying the crystal at 0˜150° C. for 0.5˜24 hours to obtain acyclovir 2/3 hydrate. The preparation process is simple and suitable for industrial production. The prepared product has good and stable crystal form.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: July 21, 2015
    Assignee: Zhejiang Charioteer Pharmaceutical Co., Ltd.
    Inventors: Tong Pu, Yi Fan, Tian Chen, Ming Lei, Naixing Wang, Zhen Yang, Jianming Yang
  • Method for Preparing Acyclovir 2/3 Hydrate
    Publication number: 20120010408
    Abstract: Preparation of acyclovir 2/3 hydrate comprises mixing acyclovir with water at weight ratio of 1:5˜50, dissolving at 50˜100° C., filtering, cooling filtrate at 0˜30° C. to precipitate crystal, collecting the crystal by filtration, and drying the crystal at 0˜150° C. for 0.5˜24 hours to obtain acyclovir 2/3 hydrate. The preparation process is simple and suitable for industrial production. The prepared product has good and stable crystal form.
    Type: Application
    Filed: March 17, 2010
    Publication date: January 12, 2012
    Applicant: Zhejiang Charioteer Pharmaceutical CO., LTD
    Inventors: Tong Pu, Yi Fan, Tian Chen, Ming Lei, Naixing Wang, Zhen Yang