Patents by Inventor Uttam Saha

Uttam Saha 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).

  • Patent number: 7710155
    Abstract: A dynamic latch includes a first stage for receiving an input data value and for providing true and complement logic values representing the input data value; a second stage for receiving the true and complement logic values into first and second dynamic node, when a control signal is active; and a holding that outputs the true and complement logic values while the control signal is active. The second stage may provide a feedback signal to the first stage to block propagation of changes in the input data value after the true and complement logic values have been received. The feedback signal may be derived, for example, from logic values on the dynamic nodes. A holding circuit may be provided.
    Type: Grant
    Filed: April 20, 2007
    Date of Patent: May 4, 2010
    Assignee: Oracle America, Inc.
    Inventors: Ajay Bhatia, Uttam Saha
  • Publication number: 20090233889
    Abstract: A stabilized 1,25-dihydroxyvitamin D2 composition which is particularly well suited for pharmaceutical formulations, pharmaceutical formulations of the 1,25-dihydroxyvitamin D2 composition, and a method of making the purified composition by purifying a crude 1,25-dihydroxyvitamin D2 from acetone/water, are disclosed.
    Type: Application
    Filed: March 12, 2009
    Publication date: September 17, 2009
    Inventor: Uttam Saha
  • Publication number: 20090082317
    Abstract: The present invention provides novel 16,23-diene 25-oxime ether analogs of 1,25-dihydroxy vitamin D3, compositions comprising these compounds and methods of using these compounds as inhibitors of CYP24. In particular, the novel compound of the invention are useful for treating diseases which benefit from a modulation of the levels of 1,25-dihydroxy vitamin D3, for example, cell-proliferative disorders.
    Type: Application
    Filed: April 25, 2006
    Publication date: March 26, 2009
    Applicants: CYTOCHROMA INC., JOHNS HOPKINS UNIVERSITY
    Inventors: Uttam Saha, Gary H. Posner, Mehmet Kahraman
  • Publication number: 20080300427
    Abstract: A process for producing a compound of the formula: including reacting of a compound of the formula: with diphenyl phosphine oxide using a binary phase reaction mixture including diphenyl phosphine oxide in an organic solvent, a basic aqueous solution, and a phase transfer catalyst, to obtain the compound of formula 1, wherein Ph is phenyl, X1 and X2 are both hydrogen or X1 and X2 taken together are CH2, R1 is a protecting group, R2 is fluorine, hydrogen, or OR3, wherein R3 is a protecting group, and the squiggly line represents a bond that results in the adjacent double bond being in either the E or Z configuration, is disclosed.
    Type: Application
    Filed: May 29, 2008
    Publication date: December 4, 2008
    Inventor: Uttam Saha
  • Publication number: 20080258788
    Abstract: A dynamic latch includes a first stage for receiving an input data value and for providing true and complement logic values representing the input data value; a second stage for receiving the true and complement logic values into first and second dynamic node, when a control signal is active; and a holding that outputs the true and complement logic values while the control signal is active. The second stage may provide a feedback signal to the first stage to block propagation of changes in the input data value after the true and complement logic values have been received. The feedback signal may be derived, for example, from logic values on the dynamic nodes. A holding circuit may be provided.
    Type: Application
    Filed: April 20, 2007
    Publication date: October 23, 2008
    Inventors: Ajay Bhatia, Uttam Saha
  • Publication number: 20060217353
    Abstract: The present invention provides novel sulfoximine compounds, compositions comprising these compounds and methods of using these compounds as inhibitors of CYP24. In particular, the compounds of the invention are useful for treating diseases which benefit from a modulation of the levels of 1?,25-dihydroxy vitamin D3, for example, cell-proliferative disorders.
    Type: Application
    Filed: May 30, 2006
    Publication date: September 28, 2006
    Applicants: Cytochroma Inc., Johns Hopkins University
    Inventors: Gary Posner, Mehmet Kahraman, Uttam Saha
  • Patent number: 7101865
    Abstract: The present invention provides novel sulfoximine compounds, compositions comprising these compounds and methods of using these compounds as inhibitors of CYP24. In particular, the compounds of the invention are useful for treating diseases which benefit from a modulation of the levels of 1?,25-dihydroxy vitamin D3, for example, cell-proliferative disorders.
    Type: Grant
    Filed: June 13, 2003
    Date of Patent: September 5, 2006
    Assignees: Cytochroma Inc., Johns Hopkins Univ.
    Inventors: Gary H. Posner, Mehmet Kahraman, Uttam Saha
  • Publication number: 20040224930
    Abstract: The present invention provides novel D-ring and side-chain analogs of 1&agr;,25-dihydroxyvitamin D3, compositions comprising these compounds and methods of using these compounds as selective inhibitors of CYP24. In particular, the compounds of the invention are useful for treating diseases which benefit from a modulation of the levels of 1&agr;,25-dihydroxyvitamin D3, for example, cell-proliferative disorders.
    Type: Application
    Filed: December 18, 2003
    Publication date: November 11, 2004
    Inventors: Gary H. Posner, Jae Kyoo Lee, Qiang Wang, Kenneth R. Crawford, Hong Woon Yang, Steven M. Silverman, Byung-Chul Suh, Jay A. White, Glenville Jones, Uttam Saha, Heung Bae Jeon
  • Publication number: 20040038949
    Abstract: The present invention provides novel sulfoximine compounds, compositions comprising these compounds and methods of using these compounds as inhibitors of CYP24. In particular, the compounds of the invention are useful for treating diseases which benefit from a modulation of the levels of 1&agr;,25-dihydroxy vitamin D3, for example, cell-proliferative disorders.
    Type: Application
    Filed: June 13, 2003
    Publication date: February 26, 2004
    Applicants: Johns Hopkins University, Cytochroma Inc.
    Inventors: Gary H. Posner, Mehmet Kahraman, Uttam Saha