Patents by Inventor Rama Haldar

Rama Haldar 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: 8715731
    Abstract: A process for reducing the intensity of the intrinsic bitter taste of a water soluble active which comprises dry mixing of said active with ?-cyclodextrin.
    Type: Grant
    Filed: March 21, 2007
    Date of Patent: May 6, 2014
    Assignee: ISP Investments Inc.
    Inventors: Rama Haldar, Dipan Ray, Deborah Tobia, Donald Koelmel, Sidney Etienne
  • Patent number: 8168219
    Abstract: Tablets of a pharmaceutical, nutritional or vitamin active compound or composition, e.g. a poorly compressible drug are made by direct compression using a synergistic binder composition of co-processed (a) copolymer of vinylpyrrolidone (VP) and vinyl acetate (VA) and (b) microcrystalline cellulose (MCC), in a wt. ratio of (a):(b) of 1-30:99-70, which is spray dried to provide a readily compressible excipient binder powder for such active. The tablets obtained herein have advantageous hardness and friability at an acceptable compression force.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: May 1, 2012
    Assignee: ISP Investments Inc.
    Inventors: Rama Haldar, Dipan B. Ray, Timothy G. Bee, Sidney Etienne, Su-Jane Cheng
  • Publication number: 20100104656
    Abstract: A low melting binder composition for preparation of pharmaceutical tablets and/or granules which comprises a polymer and a hydrophobic meltable binder.
    Type: Application
    Filed: March 19, 2008
    Publication date: April 29, 2010
    Inventors: Paul Wan Sia Heng, Wai See Cheong, Zhi Hui Loh, Dipan B. Ray, Rama Haldar, Yolande Anthony
  • Patent number: 7704528
    Abstract: Tablets of a poorly compressible drug are made by direct compression using a binder composition which is a polymer, preferably a copolymer of polyvinylpyrrolidone (PVP) and vinyl acetate (VA), having a defined glass transition temperature (Tg), admixed with a plasticizer, e.g. an organic ester or polyol, which reduces the Tg of the copolymer by at least 10° C. The binder composition and the drug are directly compressed into a tablet of predetermined hardness and friability, and at an acceptable compression force.
    Type: Grant
    Filed: August 15, 2003
    Date of Patent: April 27, 2010
    Assignee: ISP Investments Inc.
    Inventors: Rama Haldar, John Zamora, Dipan B. Ray, William Drefko, Greg Dubrowny, Sidney Etienne
  • Patent number: 7534381
    Abstract: A process and apparatus for forming agglomerates of a powder composition of an active and binder such as a homopolymer or copolymer which includes passing the composition through a hot roller compactor to heat said binder material above its glass transition temperature.
    Type: Grant
    Filed: September 14, 2005
    Date of Patent: May 19, 2009
    Assignee: ISP Investments Inc.
    Inventors: Rama Haldar, Dipan B. Ray, William Drefko, Sidney Etienne
  • Publication number: 20070259931
    Abstract: A process for reducing the intensity of the intrinsic bitter taste of a water soluble active which comprises dry mixing of said active with ?-cyclodextrin.
    Type: Application
    Filed: March 21, 2007
    Publication date: November 8, 2007
    Inventors: Rama Haldar, Dipan Ray, Deborah Tobia, Donald Koelmel, Sidney Etienne
  • Publication number: 20070122472
    Abstract: Tablets of a pharmaceutical, nutritional or vitamin active compound or composition, e.g. a poorly compressible drug are made by direct compression using a synergistic binder composition of co-processed (a) copolymer of vinylpyrrolidone (VP) and vinyl acetate (VA) and (b) microcrystalline cellulose (MCC), in a wt. ratio of (a):(b) of 1-30:99-70, which is spray dried to provide a readily compressible excipient binder powder for such active. The tablets obtained herein have advantageous hardness and friability at an acceptable compression force.
    Type: Application
    Filed: November 30, 2005
    Publication date: May 31, 2007
    Inventors: Rama Haldar, Dipan Ray, Timothy Bee, Sidney Etienne, Su-Jane Cheng
  • Publication number: 20070060494
    Abstract: A process and apparatus for forming agglomerates of a powder composition of an active and binder such as a homopolymer or copolymer which includes passing the composition through a hot roller compactor to heat said binder material above its glass transition temperature.
    Type: Application
    Filed: September 14, 2005
    Publication date: March 15, 2007
    Inventors: Rama Haldar, Dipan Ray, William Drefko, Sidney Etienne
  • Publication number: 20040224015
    Abstract: Tablets of a poorly compressible drug are made by direct compression using a binder composition which is a polymer, preferably a copolymer of polyvinylpyrrolidone (PVP) and vinyl acetate (VA), having a defined glass transition temperature (Tg), admixed with a plasticizer, e.g. an organic ester or polyol, which reduces the Tg of the copolymer by at least 10° C. The binder composition and the drug are directly compressed into a tablet of predetermined hardness and friability, and at an acceptable compression force.
    Type: Application
    Filed: August 15, 2003
    Publication date: November 11, 2004
    Applicant: ISP INVESTMENTS INC.
    Inventors: Rama Haldar, John Zamora, Dipan B. Ray, William Drefko, Greg Dubrowny, Sidney Etienne