Patents Represented by Attorney, Agent or Law Firm Robert A. Franks
  • Patent number: 7169793
    Abstract: A process of preparation of optically pure or optically enriched isomers of omeprazole and structurally related sulfoxides is provided. Also provided are an amorphous form of esomeprazole, as well a pharmaceutical composition containing it and a method of using it for treatment of gastric disorders.
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: January 30, 2007
    Assignees: Dr. Reddy's Laboratories Limited, Dr. Reddy's Laboratories, Inc.
    Inventors: Manne Satyanarayana Reddy, Muppa Kishore Kumar, Kikkuru Srirami Reddy, Koilkonda Purandhar, Keshaboina Sreenath
  • Patent number: 7161004
    Abstract: Intermediate compounds for preparing rosuvastatin are prepared by a process comprising oxidizing hydroxy groups to aldehyde groups, using sodium hypochlorite and 2,2,6,6-tetramethyl piperidinyl oxy free radical (TEMPO) as a catalyst.
    Type: Grant
    Filed: June 21, 2005
    Date of Patent: January 9, 2007
    Assignees: Dr. Reddy's Laboratories Limited, Dr. Reddy's Laboratories, Inc.
    Inventors: Srinivasulu Gudipati, Srinivas Katkam, Rajeshwar Reddy Sagyam, Jaya Satyanaraya Kudavalli
  • Patent number: 7148354
    Abstract: An efficient process for preparation of donepezil is provided. In one embodiment, the process for preparation of donepezil includes suspending a catalyst, which is palladium metal on carbon and the compound of the structure in an alcoholic solvent and hydrogenating the suspension at the hydrogen pressure of from about 1 to about 5 and a temperature of from about 40 to about 90° C. till the hydrogenation reaction is substantially complete to obtain a compound of the formula (VI): which then converted to donepezil. The processes of the invention are believed to be simple, eco-friendly, and commercially viable.
    Type: Grant
    Filed: July 24, 2003
    Date of Patent: December 12, 2006
    Assignees: Dr. Reddy's Laboratories Limited, Dr. Reddy's Laboratories, Inc.
    Inventors: Manne Satyanarayana Reddy, Sajja Eswaraiah, Mathad Vijayavitthal Thippannachar, Elati Ravi Rama Chandrashekar, Podichetty Anil Kumar, Kolla Naveen Kumar
  • Patent number: 7074818
    Abstract: The present invention relates to novel crystalline forms of atorvastatin calcium and to the methods of their production and isolation. More specifically, the present invention relates to novel Forms VI and VII of R—(R*,R*)]-2(4-fluorophenyl)-B,d dihydroxy-5(1-methylethyl)-3-phenyl-4-[(phenylamino)carbonyl]-1-H-pyrrole-1-heptanoic- acid calcium salt and hydrates thereof and to methods of their preparation.
    Type: Grant
    Filed: January 7, 2002
    Date of Patent: July 11, 2006
    Assignees: Dr. Reddy's Laboratories Limited, Dr. Reddy's Laboratories, Inc.
    Inventors: Satyanarayana Reddy Manne, Nagaraju Chakilam, Srinivasulu Gudipati, Srinivas Katkam, Rajeswar Reddy Sagyam
  • Patent number: 7049448
    Abstract: There is provided a process for preparation of a monoketal compound of the structure that includes reacting 1,4-cyclohexanedione of the structure with a diol of the structure in a halogenated organic solvent in the presence of an acid catalyst, wherein X is a substituted or unsubstituted ethylene or propylene. Various embodiments and variants are provided.
    Type: Grant
    Filed: September 15, 2003
    Date of Patent: May 23, 2006
    Assignees: Dr. Reddy's Laboratories Limited, Dr. Reddy's Laboratories, Inc.
    Inventors: Buchi Reddy Reguri, Rajasekhar Kadaboina, Srinivas Reddy Gade, Babu Ireni
  • Patent number: 7034162
    Abstract: The present invention relates to an amorphous form of Sumatriptan succinate of Formula (1). The present invention also relates to process for the preparation of an amorphous form of Sumatriptan succinate. The process for the preparation of an amorphous form of Sumatriptan succinate comprises refluxing an aqueous mixture of Sumatriptan or its succinate salt in alcoholic solvents such as methanol or nitrile solvents such as acetonitrile followed by evaporation of the solvent from the filtrate. The resulting residue is triturated with water immiscible aromatic or aliphatic hydrocarbon solvents such as cyclohexane to afford an amorphous form of Sumatriptan succinate.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: April 25, 2006
    Assignees: Dr. Reddy's Laboratories Limited, Dr. Reddy's Laboratories, Inc.
    Inventors: Manne Satyanarayana Reddy, Srinivasan Thirumalai Rajan, Mokkarala Suryanarayana Murthy, Achampeta Kodanda Ram Prasad
  • Patent number: 6956030
    Abstract: The administration of aerosolize particles of mometasone furoate in the form of dry powders, solutions, or aqueous suspension for treating corticosteroid-responsive diseases of the surfaces of upper and/or lower airway passages and/or lungs, e.g., allergic rhinitis and asthma is disclosed.
    Type: Grant
    Filed: January 22, 2004
    Date of Patent: October 18, 2005
    Assignee: Schering Corporation
    Inventors: Joel A. Sequeira, Francis M. Cuss, Keith B. Nolop, Imtiaz A. Chaudry, Nagamani Nagabhushan, James E. Patrick, Mitchell Cayen
  • Patent number: 6949532
    Abstract: The administration of aerosolize particles of mometasone furoate in the form of dry powders, solutions, or aqueous suspension for treating corticosteroid-responsive diseases of the surfaces of upper and/or lower airway passages and/or lungs, e.g., allergic rhinitis and asthma is disclosed.
    Type: Grant
    Filed: January 22, 2004
    Date of Patent: September 27, 2005
    Assignee: Schering Corporation
    Inventors: Joel A. Sequeira, Francis M. Cuss, Keith B. Nolop, Imtiaz A. Chaudry, Nagamani Nagabhushan, James E. Patrick, Mitchell Cayen
  • Patent number: 6939550
    Abstract: An antihistaminic syrup is stabilized against degradation of the active ingredient, by the addition of and about 0.05 to about 5 mg/mL of an aminopolycarboxylic acid such as a salt of ethylenediaminetetraacetic acid.
    Type: Grant
    Filed: November 15, 2002
    Date of Patent: September 6, 2005
    Assignee: Schering Corporation
    Inventors: Farah J. Munayyer, Frank Guazzo, Elliot I. Stupak, Imtiaz A. Chaudry, Joel A. Sequeira
  • Patent number: 6824762
    Abstract: Aqueous nasal spray compositions comprising a medicament and an aqueous carrier comprising water soluble polymers selected from the group consisting of polyvinylpyrrolidone and mixtures thereof.
    Type: Grant
    Filed: August 28, 2001
    Date of Patent: November 30, 2004
    Assignee: Schering-Plough Healthcare Products Inc.
    Inventors: Joseph A. Haslwanter, William F. Rencher
  • Patent number: 6723713
    Abstract: The administration of aerosolize particles of mometasone furoate in the form of dry powders, solutions, or aqueous suspension for treating corticosteroid-responsive diseases of the surfaces of upper and/or lower airway passages and/or lungs, e.g., allergic rhinitis and asthma is disclosed.
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: April 20, 2004
    Assignee: Schering Corporation
    Inventors: Joel A. Sequeira, Francis M. Cuss, Keith B. Nolop, Imtiaz A. Chaudry, Nagamani Nagabhushan, James E. Patrick, Mitchell Cayen
  • Patent number: 6711313
    Abstract: An optical CDMA encoder-decoder is constructed by combining arrayed-waveguide gratings, matrix optical switches, and delay lines, otherwise by combining arrayed-waveguide grating and variable delay lines, thus providing an encoding process that a wavelength change with respect to time in optical pulses. The light includes a wide spectrum band width inserted into a CDMA encoder/decoder and is demultiplexed by arrayed-waveguide gratings. Each wave length according to the demultiplexed spectrum component spreads out in the time region based on delay time differences produced by delay lines having differential optical lengths. Thus, in CDMA, the dependency of wavelengths on delay time can be set arbitrarily.
    Type: Grant
    Filed: January 4, 2001
    Date of Patent: March 23, 2004
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Koichi Takiguchi, Katsunari Okamoto, Tomohiro Shibata, Masao Kato, Takashi Goh
  • Patent number: 6699028
    Abstract: An apparatus for making a molded article containing an insert includes an upper mold half and a lower mold half for mating with the upper mold half to provide a mold cavity therein. Either mold half can include a recess, an elevator opening in a lower portion of the recess, and an inwardly directed lip at an upper portion of the elevator opening. An elevator mechanism is provided which includes a lifter for supporting an insert to be secured to the article during a molding operation, and a lifting arrangement for raising and lowering the lifter through the elevator opening such that a peripheral edge of the insert supported on the lifter is clamped between the lifter and the lip when the lifting arrangement raises the lifter.
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: March 2, 2004
    Assignee: Schering-Plough HealthCare Products, Inc.
    Inventors: John W. Davis, Randall K. Fisher, Joseph J. Noble, Jr.
  • Patent number: 6696048
    Abstract: Described is a method for preparing sunscreening compositions that contain chlorphenesin as a biocidal preservative, wherein the chlorphenesin is dissolved in water-insoluble components.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: February 24, 2004
    Assignee: Schering-Plough Healthcare Products, Inc.
    Inventor: Inna Karpov
  • Patent number: 6689394
    Abstract: Ectoparasites, such as fleas, ticks, mites and lice, are removed from a human or animal host after applying a composition to the affected area that causes desiccation of the organism. In one embodiment, treatment is effected by applying a substantially anhydrous composition that has a strong affinity for water. As the composition hydrates, it desiccates the pests and facilitates their mechanical removal, such as by combing.
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: February 10, 2004
    Assignee: Schering-Plough HealthCare Products, Inc.
    Inventors: Kurt G. Van Scoik, Marcia S. Schlesinger, Frank A. Anthony
  • Patent number: D487185
    Type: Grant
    Filed: August 6, 2002
    Date of Patent: March 2, 2004
    Assignee: Schering-Plough HealthCare Products, Inc.
    Inventors: Bernard F. Grisoni, Philip Yang, Harold A. Howlett, Laura J. Crane, Peter Everett
  • Patent number: D487943
    Type: Grant
    Filed: April 16, 2003
    Date of Patent: March 30, 2004
    Assignee: Schering-Plough HealthCare Products, Inc.
    Inventors: Frank A. Anthony, Heidi N. Graham, Rebecca A. Hegner, Harold A. Howlett
  • Patent number: D487944
    Type: Grant
    Filed: April 16, 2003
    Date of Patent: March 30, 2004
    Assignee: Schering-Plough HealthCare Products, Inc.
    Inventors: Frank A. Anthony, Heidi N. Graham, Rebecca A. Hegner, Harold A. Howlett
  • Patent number: D487945
    Type: Grant
    Filed: April 16, 2003
    Date of Patent: March 30, 2004
    Assignee: Schering-Plough HealtCare Products, Inc.
    Inventors: Frank A. Anthony, Heidi N. Graham, Rebecca A. Hegner, Harold A. Howlett
  • Patent number: D490185
    Type: Grant
    Filed: April 16, 2003
    Date of Patent: May 18, 2004
    Assignee: Schering-Plough HealthCare Products, Inc.
    Inventors: Rebecca A. Hegner, Harold A. Howlett