Patents by Inventor Rositza Petrova

Rositza Petrova 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).

  • Preparation of crystalline forms of dihydropyrazolopyrimidinone
    Patent number: 9388186
    Abstract: The instant invention relates to crystalline forms of MK-1775, an inhibitor of Weel kinase. Specifically, the instant invention relates to hemihydrates of MK-1775.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: July 12, 2016
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Rositza Petrova, Eric Sirota, Robert Wenslow
  • PREPARATION OF CRYSTALLINE FORMS OF DIHYDROPYRAZOLOPYRIMIDINONE
    Publication number: 20140187562
    Abstract: The instant invention relates to crystalline forms of MK-1775, an inhibitor of Weel kinase. Specifically, the instant invention relates to hemihydrates of MK-1775.
    Type: Application
    Filed: March 6, 2014
    Publication date: July 3, 2014
    Inventors: Rositza Petrova, Eric Sirota, Robert Wenslow
  • Preparation of crystalline forms of dihydropyrazolopyrimidinone
    Patent number: 8703779
    Abstract: The instant invention relates to crystalline forms of MK-1775, an inhibitor of Weel kinase. Specifically, the instant invention relates to hemihydrates of MK-1775.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: April 22, 2014
    Assignee: Merck Sharp & Dohme Corp.
    Inventors: Rositza Petrova, Eric Sirota, Robert Wenslow
  • PREPARATION OF CRYSTALLINE FORMS OF DIHYDROPYRAZOLOPYRIMIDINONE
    Publication number: 20120172370
    Abstract: The instant invention relates to crystalline forms of MK-1775, an inhibitor of Weel kinase. Specifically, the instant invention relates to hemihydrates of MK-1775.
    Type: Application
    Filed: September 2, 2010
    Publication date: July 5, 2012
    Inventors: Rositza Petrova, Eric Sirota, Robert Wenslow