Patents by Inventor Chittamuru Ramireddy

Chittamuru Ramireddy 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).

  • Enteric film coating compositions, method of coating therewith, and coated forms
    Patent number: 6039976
    Abstract: A non-toxic edible enteric film coating dry powder composition for use in making an aqueous enteric coating suspension which may be used in coating pharmaceutical tablets and the like comprises an enteric film forming polymer, a detackifier, a viscosity modifier, and an alkalizing/anti-coagulating agent. Advantageously, the inventive dry powder compositions may include a solid plasticizer, a lubricant, an anti-caking agent, a liquid plasticizer, and a pigment.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: March 21, 2000
    Assignee: BPSI Holdings, Inc.
    Inventors: Dev K. Mehra, Chittamuru Ramireddy, Li-Juan Tang, Stuart C. Porter
  • Enteric film coating compositions, method of coating therewith, and coated forms
    Patent number: 6013282
    Abstract: A non-toxic edible enteric film coating dry powder composition for use in making an aqueous enteric coating suspension which may be used in coating pharmaceutical tablets and the like comprises an enteric film forming polymer, a detackifier, a viscosity modifier, and an alkalizing/anti-coagulating agent. Advantageously, the inventive dry powder compositions may include a solid plasticizer, a lubricant, an anti-caking agent, a liquid plasticizer, and a pigment.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: January 11, 2000
    Assignee: Bpsi Holdings, Inc.
    Inventors: Dev K. Mehra, Chittamuru Ramireddy, Li-Juan Tang, Stuart C. Porter
  • Enteric film coating compositions, method of coating therewith, and coated forms
    Patent number: 5733575
    Abstract: A non-toxic edible enteric film coating dry powder composition for use in making an aqueous enteric coating suspension which may be used in coating pharmaceutical tablets and the like comprises an enteric film forming polymer, a detackifier, a viscosity modifier, and an alkalizing/anti-coagulating agent. Advantageously, the inventive dry powder compositions may include a solid plasticizer, a lubricant, an anti-caking agent, a liquid plasticizer, and a pigment.
    Type: Grant
    Filed: October 7, 1994
    Date of Patent: March 31, 1998
    Assignee: BPSI Holdings, Inc.
    Inventors: Dev K. Mehra, Chittamuru Ramireddy, Li-Juan Tang, Stuart C. Porter
  • Cationic polymers
    Patent number: 5149752
    Abstract: Certain novel cationic polyelectrolytes are useful as components of formulations for treating keratinaceous and proteinaceous substrates.
    Type: Grant
    Filed: February 16, 1990
    Date of Patent: September 22, 1992
    Assignee: Clairol Incorporated
    Inventors: Janusz Jachowicz, Chittamuru Ramireddy