Patents by Inventor Usman Ashfaq

Usman Ashfaq 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).

  • 3-amino-2-(4-nitrophenyl)-4-(3H)-quinazolinone or derivatives thereof for treating or preventing antiviral infections
    Patent number: 8809354
    Abstract: Surprising antiviral activity of 3-amino-2-(4-nitrophenyl)-4-(3H)-quinazolinone (Compound 1) was reported in the treatment or prevention of viral infections, particularly in combination with other antiviral agents such as interferon and/or ribavarin.
    Type: Grant
    Filed: December 31, 2011
    Date of Patent: August 19, 2014
    Inventors: Sheikh Riazuddin, Osman Ali, Usman Ashfaq, Shaheen N. Khan, Javed Akram, Atta-ur Rahman, M. Iqbal Choudhary, Khalid M. Khan, Zulfiqar Ali Khan
  • 3-amino-2-(4-nitrophenyl)-4-(3H)-quinazolinone or derivatives thereof for treating or preventing antiviral infections
    Publication number: 20130171101
    Abstract: Surprising antiviral activity of 3-amino-2-(4-nitrophenyl)-4-(3H)-quinazolinone (Compound 1) was reported in the treatment or prevention of viral infections, particularly in combination with other antiviral agents such as interferon and/or ribavarin.
    Type: Application
    Filed: December 31, 2011
    Publication date: July 4, 2013
    Inventors: Sheikh Riazuddin, Osman Ali, Usman Ashfaq, Shaheen N. Khan, Javed Akram, Atta-ur Rahman, M. Iqbal Choudhary, Khalid M. Khan, Zulfiqa Ali Khan