Patents by Inventor Subhra Bhattacharya

Subhra Bhattacharya 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: 20060276444
    Abstract: Porphyrin-polyamine conjugate compounds are disclosed which have anticancer and antitumor effects. The porphyrin moiety selectively localizes in tumors, while the polyamine moiety serves as a cytotoxic agent. Methods of making and using the porphyrin-polyamine conjugate compounds are also disclosed.
    Type: Application
    Filed: February 7, 2006
    Publication date: December 7, 2006
    Inventors: Benjamin Frydman, Linda Clifford, Aldonia Valasinas, Venodhar Reddy, Hirak Basu, Aparajita Sarkar, Subhra Bhattacharya, Yu Wang, Laurence Marton, Andrei Blokhin
  • Patent number: 7026347
    Abstract: Porphyrin-polyamine conjugate compounds are disclosed which have anticancer and antitumor effects. The porphyrin moiety selectively localizes in tumors, while the polyamine moiety serves as a cytotoxic agent. Methods of making and using the porphyrin-polyamine conjugate compounds are also disclosed.
    Type: Grant
    Filed: June 24, 2003
    Date of Patent: April 11, 2006
    Assignee: CellGate, Inc.
    Inventors: Benjamin Frydman, Aldonia L. Valasinas, Venodhar K. Reddy, Hirak S. Basu, Aparajita Sarkar, Subhra Bhattacharya, Yu Wang, Laurence J. Marton, Andrei V. Blokhin
  • Publication number: 20050130949
    Abstract: Novel cyclic polyamine compounds of the form where A1, each A2 (if present), and A3 are independently selected from C1-C8 alkyl, where each Y is independently selected from H or C1-C4 alkyl, where M is selected from C1-C4 alkyl, where k is 0, 2, or 3, and where R is selected from C1-C32 alkyl, as well as all stereoisomers and salts thereof, are disclosed. Additional compounds where k is 1 and A2 is independently selected from C1-C3 alkyl or C5-C8 alkyl are also disclosed. Cyclic polyamines, where the amide group is reduced to a secondary amino group, and various derivatives of these compounds, are also described. Synthetic methods for the compounds are described. The compounds are useful for treating diseases caused by uncontrolled proliferation of cells, such as cancer, especially prostate cancer, and for inducing intracellular ATP hydrolysis for treatment of other disorders.
    Type: Application
    Filed: January 27, 2005
    Publication date: June 16, 2005
    Inventors: Benjamin Frydman, Manfred Hesse, Armin Guggisberg, Kasim Popaj, Konstantin Drandarov, Hirak Basu, Subhra Bhattacharya, Yu Wang
  • Publication number: 20040152687
    Abstract: Porphyrin-polyamine conjugate compounds are disclosed which have anticancer and antitumor effects. The porphyrin moiety selectively localizes in tumors, while the polyamine moiety serves as a cytotoxic agent. Methods of making and using the porphyrin-polyamine conjugate compounds are also disclosed.
    Type: Application
    Filed: June 24, 2003
    Publication date: August 5, 2004
    Inventors: Benjamin Frydman, Aldonia L. Valasinas, Venodhar K. Reddy, Hirak S. Basu, Aparajita Sarkar, Subhra Bhattacharya, Yu Wang, Laurence J. Marton, Andrei V. Blokhin
  • Publication number: 20030072715
    Abstract: Novel cyclic polyamine compounds of the form 1
    Type: Application
    Filed: August 2, 2001
    Publication date: April 17, 2003
    Inventors: Benjamin Frydman, Manfred Hesse, Armin Guggisberg, Kasim Popaj, Konstantin Drandarov, Hirak Basu, Subhra Bhattacharya, Yu Wang