Patents by Inventor CHOON TEO

CHOON TEO 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 AND SYSTEM FOR PRODUCING HIGH PURITY VANCOMYCIN HYDROCHLORIDE
    Publication number: 20210023011
    Abstract: A method is provided for preparing spray dried powder containing vancomycin hydrochloride. The method comprises providing a vancomycin hydrochloride solution with a chromatographic purity of at least 95%, adding an excipient to the vancomycin hydrochloride solution to form a mixture solution of the vancomycin hydrochloride solution and the excipient, concentrating the mixed solution of the vancomycin hydrochloride solution and the excipient to form a 20% to 30% vancomycin concentrate, filtering the vancomycin concentrate to form a final filtrate and spray crying the final filtrate to form a spray dried vancomycin hydrochloride powder with EP impurity B level of not more than 1.5%.
    Type: Application
    Filed: October 12, 2020
    Publication date: January 28, 2021
    Inventors: Choon Teo, Xinqiang Sun, Xiaoyong Wang
  • Method and system for producing high purity vancomycin hydrochloride
    Patent number: 10799458
    Abstract: A method is provided for preparing spray dried powder containing vancomycin hydrochloride. The method comprises providing a vancomycin hydrochloride solution with a chromatographic purity of at least 95%, adding an excipient to the vancomycin hydrochloride solution to form a mixture solution of the vancomycin hydrochloride solution and the excipient, concentrating the mixed solution of the vancomycin hydrochloride solution and the excipient to form a 20% to 30% vancomycin concentrate, filtering the vancomycin concentrate to form a final filtrate, and spray drying the final filtrate to form a spray dried vancomycin hydrochloride powder with EP impurity B level of not more than 1.5%.
    Type: Grant
    Filed: August 19, 2016
    Date of Patent: October 13, 2020
    Assignee: ZHEJIANG MEDICINE CO., LTD
    Inventors: Choon Teo, Xinqiang Sun, Xiaoyong Wang
  • METHOD AND SYSTEM FOR PRODUCING HIGH PURITY VANCOMYCIN HYDROCHLORIDE
    Publication number: 20170042817
    Abstract: A method is provided for preparing spray dried powder containing vancomycin hydrochloride. The method comprises providing a vancomycin hydrochloride solution with a chromatographic purity of at least 95%, adding an excipient to the vancomycin hydrochloride solution to form a mixture solution of the vancomycin hydrochloride solution and the excipient, concentrating the mixed solution of the vancomycin hydrochloride solution and the excipient to form a 20% to 30% vancomycin concentrate, filtering the vancomycin concentrate to form a final filtrate, and spray drying the final filtrate to form a spray dried vancomycin hydrochloride powder with EP impurity B level of not more than 1.5%.
    Type: Application
    Filed: August 19, 2016
    Publication date: February 16, 2017
    Inventors: Choon Teo, Xianqiang Sun, Xiaoyong Wang
  • Method and system for producing high purity vancomycin hydrochloride
    Patent number: 9428291
    Abstract: A method is provided for preparing spray dried powder containing vancomycin hydrochloride. The method comprises providing a vancomycin hydrochloride solution with a chromatographic purity of at least 95%, adding an excipient to the vancomycin hydrochloride solution to form a mixture solution of the vancomycin hydrochloride solution and the excipient, concentrating the mixed solution of the vancomycin hydrochloride solution and the excipient to form a 20% to 30% vancomycin concentrate, filtering the vancomycin concentrate to form a final filtrate, and spray drying the final filtrate to form a spray dried vancomycin hydrochloride powder with EP impurity B level of not more than 1.5%.
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: August 30, 2016
    Inventors: Choon Teo, Xianqiang Sun, Xiaoyong Wang
  • METHOD AND SYSTEM FOR PRODUCING HIGH PURITY VANCOMYCIN HYDROCHLORIDE
    Publication number: 20140260098
    Abstract: A method is provided for preparing spray dried powder containing vancomycin hydrochloride. The method comprises providing a vancomycin hydrochloride solution with a chromatographic purity of at least 95%, adding an excipient to the vancomycin hydrochloride solution to form a mixture solution of the vancomycin hydrochloride solution and the excipient, concentrating the mixed solution of the vancomycin hydrochloride solution and the excipient to form a 20% to 30% vancomycin concentrate, filtering the vancomycin concentrate to form a final filtrate, and spray drying the final filtrate to form a spray dried vancomycin hydrochloride powder with EP impurity B level of not more than 1.5%.
    Type: Application
    Filed: September 11, 2013
    Publication date: September 18, 2014
    Inventors: CHOON TEO, Xianqian Sun