Patents by Inventor Hui Min He Huang

Hui Min He Huang 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: 20110071169
    Abstract: The present invention is directed to two novel polymorph form (Form A and Form B) of lapatinib ditosylate, wherein Form A is the hydrate ditosylate salt of lapatinib, and Form B is anhydrate ditosylate salt of lapatinib. The present invention is further directed to amorphous form of lapatinib ditosylate and its solid dispersion. The present invention further provides processes for the preparation of Form A, Form B, Amorphous form and solid dispersion of lapatinib ditosyalte, and a pharmaceutical composition comprising the said forms. Form A and Form B were characterized by X-RPD, DSC, TGA and FT-IR, and can be prepared from recrystallizing lapatinib ditosylate in a mixture of tetrahydrofuran (THF) and water.
    Type: Application
    Filed: August 14, 2010
    Publication date: March 24, 2011
    Inventors: Hui Min He Huang, Hu Yang
  • Patent number: 7820716
    Abstract: The present invention is directed to two new polymorph Form V and Form F of desvenlafaxine succinate, to processes of their preparations, pharmaceutical composition comprising such materials and their use in therapy. Form V is prepared from recrystallizing desvenlafaxine succinate in a mixture of tetrahydrofuran and ethanol. Form F is obtained from recrystallization of desvenlafaxine succinate in a mixture of cyclohexane and polar solvents such as ethanol, THF, methanol or isopropyl alcohol.
    Type: Grant
    Filed: November 5, 2007
    Date of Patent: October 26, 2010
    Assignee: Mai De Ltd
    Inventors: Cai Gu Huang, Hui Min He Huang
  • Publication number: 20090247532
    Abstract: The present invention is directed to a novel polymorph form of crystalline sitagliptin phosphate, named as Form V herein. The present invention further provides processes for preparations of Form V, pharmaceutical composition comprising Form V and its use in therapy. Form V can be prepared from recrystallizing sitagliptin phosphate in a mixture of methanol and water, a mixture of acetone and water, or from distillation of a mixture of organic solvents and water followed by recrystallization in the remaining aqueous solution.
    Type: Application
    Filed: January 21, 2009
    Publication date: October 1, 2009
    Inventors: Cai Gu Huang, Hui Min He Huang
  • Publication number: 20090215787
    Abstract: The present invention is directed to an amorphous form, three novel polymorph form of crystalline varenicline tartrate, namely Form D, Form E and Form F. The present invention also provides processes of their preparations and pharmaceutical composition comprising such material and their use in therapy. Form D is new anhydrous varenicline tartrate, and can be prepared from recrystallizing varenicline tartrate in a mixture of methanol and water or a mixture of N,N-dimethylformamide and water. Form E is a new varenicline tartrate monohydrate, and can be prepared recrystallizing varenicline tartrate in a mixture of isopropanol and water. Form F is another new varenicline tartrate monohydrate, and can be prepared recrystallizing varenicline tartrate in a mixture of acetone and water.
    Type: Application
    Filed: January 21, 2009
    Publication date: August 27, 2009
    Inventors: Cai Gu Huang, Hui Min He Huang
  • Publication number: 20080188567
    Abstract: The present invention is directed to two new polymorph Form V and Form F of desvenlafaxine succinate, to processes of their preparations, pharmaceutical composition comprising such materials and their use in therapy. Form V is prepared from recrystallizing desvenlafaxine succinate in a mixture of tetrahydrofuran and ethanol. Form F is obtained from recrystallization of desvenlafaxine succinate in a mixture of cyclohexane and polar solvents such as ethanol, THF, methanol or isopropyl alcohol.
    Type: Application
    Filed: November 5, 2007
    Publication date: August 7, 2008
    Inventors: Cai Gu Huang, Hui Min He Huang
  • Patent number: 7351710
    Abstract: The present invention is directed to amorphous form of indiplon, to processes for preparing said amorphous form, to pharmaceutical compositions containing the same, and to method of treatment using the same. Additionally, the present invention also relates to the preparation of solid amorphous dispersion of indiplon and a carrier which includes PVP and solid PEG etc.
    Type: Grant
    Filed: February 6, 2006
    Date of Patent: April 1, 2008
    Assignee: Mai De Ltd.
    Inventors: Le Huang, Hui Min He Huang
  • Publication number: 20080038332
    Abstract: The invention relates to a stable pharmaceutical formulation comprising an intimate admixture or admixture of crystalline or amorphous atorvastatin calcium, and a stabilizing-effective amount of a water-insoluble alkaline excipient or a combination of one or more water-insoluble alkaline excipients thereof, a stabilizing-effective amount of an antioxidant or a combination of one or more antioxidants thereof, and at least one or more additional pharmaceutically acceptable inert excipients or carriers, and a method for the preparation of the said formulation by wet and dry granulation. The invention further relates to a stabilized intimate admixture of atorvastatin calcium, a water-insoluble alkaline excipient and an antioxidant and a method for the preparation of the said intimate admixture by co-precipitation and co-milling.
    Type: Application
    Filed: August 10, 2007
    Publication date: February 14, 2008
    Inventors: Cai Gu Huang, Hui Min He Huang
  • Publication number: 20080004313
    Abstract: This invention relates to three novel solvate forms of crystalline rimonabant hydrochloride (Form A, B, and C) and two novel crystalline polymorphic forms of rimonabant hydrochloride anhydrous (Form D and E), to processes for preparing such polymorphic forms or solvate forms, to pharmaceutical compositions containing them and to the use of them in medicine.
    Type: Application
    Filed: June 18, 2007
    Publication date: January 3, 2008
    Inventors: Hui Min He Huang, Cai Gu Huang