Patents by Inventor Mahmud Tareq Hassan Khan

Mahmud Tareq Hassan Khan 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).

  • Tyrosinase enzyme inhibitors from fungal hydroxylation of tibolone
    Publication number: 20090136434
    Abstract: Seven new and one known metabolites of tibolone were obtained by incubation of tibolone with various fungi. Their structures were elucidated by means of a homo and heteronuclear 2D NMR and by HREI-MS techniques. The relative stereochemistry was deduced by 2D NOESY experiment. These metabolites of tibolone were strong inhibitors of tyrosine enzyme and thus useful in producing skin lightning and preserving fruits and vegetables.
    Type: Application
    Filed: November 23, 2007
    Publication date: May 28, 2009
    Applicant: HEJ Research Institute
    Inventors: Attaur Rahman, Muhammad Iqbal Choudhary, Syed Adnan Ali Shah, Mahmud Tareq Hassan Khan