Patents by Inventor Himadri Sen

Himadri Sen 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: 20090304755
    Abstract: A pharmaceutical composition comprising losartan and pharmaceutically acceptable salts thereof and a process of forming the same. The pharmaceutical composition of losartan comprises an active agent comprising an effective amount of losartan or its pharmaceutical salt thereof, and pharmaceutically acceptable additives, wherein d(0.9) of losartan is less than 50? and/or specific surface area is more than 0.6 m2/gm. The process of preparation of pharmaceutical composition of losartan, comprises the steps of blending the losartan having d(0.9) less than 50? and/or specific surface area more than 0.6 m2/gm, with the other intragranular excipients, dry compression, milling and screening to obtain granules, said granules being subsequently blended with extragranular excipients and compressed to tablets which is further coated.
    Type: Application
    Filed: January 6, 2006
    Publication date: December 10, 2009
    Inventors: Raghu Rami Reddy Kasu, Dhanashree Mistry, Sunderraj Manvi, Vijaya Kumar Thommandru, Himadri Sen
  • Publication number: 20090208575
    Abstract: A pharmaceutical composition for oral use comprising a) a core comprising an effective amount of benzimidazole and an organic stabilizing agent which is present in an amount effective to stabilize the composition, b) an intermediate layer comprising of a water insoluble polymer and an organic stabilizer, and c) an outer enteric coating layer. The organic stabilizing agent is present in the core from about 1% to about 10% by weight of the core and in the intermediate layer from about 5% to about 35% by weight of intermediate layer.
    Type: Application
    Filed: January 3, 2006
    Publication date: August 20, 2009
    Applicant: LUPIN LIMITED
    Inventors: Jyothi Lakshmi Gunupati, Suryakumar Jayanthi, Himadri Sen
  • Publication number: 20090022809
    Abstract: A stable taste masked, pharmaceutical composition comprising a plurality of coated, non-disintegrating discrete dosage units, said units comprising of a core comprising one or more cephalosporins such as cefuroxime axetil and cefpodoxime proxetil and one or more coating layers. Cefuroxime axetil is in ?-crystalline and amorphous forms, where at least 30% of the Cefuroxime axetil is in the ?-crystalline form, wherein the particle size distribution of the ?-crystalline form being such that 100% of the particles have a particle size below 250?. The ratio of the crystalline fraction to the amorphous fraction ranges from 0.3:0.7 to 0.99:0.01. The particle size of cefpodoxime proxetil is such that 90% of the particles are below 15?.
    Type: Application
    Filed: December 2, 2005
    Publication date: January 22, 2009
    Applicant: LUPIN LTD.
    Inventors: Sachin Pundlik Kolhe, Subrata Kundu, Sanjay Chhagan Wagh, Makarand Krishnakumar Avachat, Himadri Sen
  • Publication number: 20080274196
    Abstract: An oral, pharmaceutical suspension composition of Fexofenadine. Fexofenadine is a mixture of compacted Fexofenadine and plain fexofenadine in a ratio of 0.01:0.99 to 0.99 to 0.01 having a mean particle size of fexofenadine particles in the range of 10? and 250 ?.An oral, pharmaceutical suspension composition of Fexofenadine, which is bioequivalent to a tablet dosage form of fexofenadine marketed under the trade name of Allegra®. Bioequivalence between a suspension formulation and the commercially tablet formulation of fexofenadine i.e. ‘Allegra®’ is achieved by the use of a mixture of compacted Fexofenadine.
    Type: Application
    Filed: August 3, 2006
    Publication date: November 6, 2008
    Applicant: LIPIN LIMITED
    Inventors: Surya Kumar Jayanthi, Nitin S. Deshmukh, Himadri Sen
  • Publication number: 20080194542
    Abstract: A stable pharmaceutical composition consisting of (a) benazepril, in free or pharmaceutically acceptable salt form; and (b) amlodipine, in free or pharmaceutically acceptable salt form. The composition is free of alkali and alkaline earth metal carbonates and phosphates. The composition is also free of excipients which increase the pH of microenvironment above 5. It is therefore not required to physically separate the two drugs from each other.
    Type: Application
    Filed: January 25, 2006
    Publication date: August 14, 2008
    Inventors: Veena Vithalapuram, Vijaya Kumar Thommandru, Himadri Sen
  • Publication number: 20080102134
    Abstract: A color stable controlled release pharmaceutical dosage form comprising HMG CoA reductase inhibitor, rate controlling polymers and one or more pharmaceutical excipients wherein the granules are independent of particle size the pharmaceutical dosage form is free of alkalizing/buffering agents. A color stable controlled release pharmaceutical dosage form comprising Fluvastatin Sodium, hydroxypropyl methylcellulose polymer and hydroxypropyl cellulose, wherein the granules are independent of particle size.
    Type: Application
    Filed: October 11, 2007
    Publication date: May 1, 2008
    Applicant: LUPIN LIMITED
    Inventors: Dhanashree Mistry, Dhananjay Panigrahi, T. Kumar, Himadri Sen
  • Publication number: 20080081069
    Abstract: A controlled release formulation comprising less than about 40% of anti-epileptic drug, about 20% to about 50% of rate controlling polymer and silica having a particle size less than about 1 micron and specific surface area not less than 70 m2/g, all weight percentages are based upon the total weight of the dosage form, manufactured under normal atmospheric conditions.
    Type: Application
    Filed: September 28, 2007
    Publication date: April 3, 2008
    Applicant: Lupin Limited
    Inventors: Ramprasad Prasad, T. Kumar, Himadri Sen
  • Publication number: 20070292500
    Abstract: Extended release pharmaceutical composition of Venlafaxine hydrochloride comprising a pharmaceutically acceptable capsule containing minitablets. The minitablets comprise from about 20% to about 70% by weight effective amount of Venlafaxine hydrochloride, polyvinyl acetate, one or more pharmaceutically acceptable excipients. The minitablets have diameter from about 1 mm to 5 mm and are coated with a release controlling composition.
    Type: Application
    Filed: May 21, 2004
    Publication date: December 20, 2007
    Applicant: LUPIN LTD.
    Inventors: Sanjay Wagh, Hidaytulla Aga, Himadri Sen
  • Publication number: 20070286901
    Abstract: A chewable tablet comprising Cefixime having a mean particle size between 20 ? and 120 ? wherein the said composition demonstrates bioequivalence to a suspension of Cefixime trihydrate. The process of preparation of the chewable tablet comprises the steps of optionally micronizing Cefixime such that the mean particle size of the Cefixime particles is between 20 ? and 120 ?, blending with other excipients, roll compaction, milling to form granules, blending to form a secondary blend and compression of the secondary blend to form tablets.
    Type: Application
    Filed: May 10, 2004
    Publication date: December 13, 2007
    Applicant: Lupin Ltd.
    Inventors: Sanjay Wagh, Hidaytulla Aga, Makarand Avachat, Himadri Sen
  • Publication number: 20070231385
    Abstract: A three-drug antiretrovial pharmaceutical composition having a selective combination of a controlled release active formulation and an immediate release active formulation for once daily administration. The composition provides desired dosages of the actives lamivudine, zidovudine or pharmaceutically acceptable derivatives thereof, and the immediate release formulation including at least one selective Non-nucleoside Reverse Transcriptase Inhibitor (NNRTI), preferably nevirapine or a pharmaceutically acceptable derivative thereof along with pharmaceutically acceptable excipients. The once daily composition would favour patient compliance and effective treatment. A method of reducing the pill burden in a patient suffering from HIV infection and/or Acquired Immunodeffieciency Syndrome by administering a once daily dose of the three-drug antiretroviral pharmaceutical composition.
    Type: Application
    Filed: September 29, 2004
    Publication date: October 4, 2007
    Applicant: Lupin Limited
    Inventors: Himadri Sen, Suryakumar Jayanthi, Vineeth Raghavan, Ganga Arra
  • Publication number: 20070154408
    Abstract: The present invention relates to a biodegradable microparticle composition useful for the target specific drug delivery to manage pulmonary tuberculosis, said composition comprising two anti-tuberculosis drugs, and a biodegradable polymer for drug delivery in a ratio of about 1:2 to 2:1, wherein the anti-tubercular drugs are in the ratio of 1:2 to 2:1, also, a process for the preparation of the composition, and lastly, a method of treating pulmonary tuberculosis in a subject, said method comprising administering by inhalation alone or in combination with oral route, pharmaceutically effective amount of the composition to the subject in need thereof, wherein the dosage for inhalation is ranging between 0.5 to 10 mg/kg body weight/day and that for oral route is ranging between 4 to 32 mg/kg body weight/day.
    Type: Application
    Filed: March 9, 2007
    Publication date: July 5, 2007
    Inventors: Himadri Sen, Suryakumar Jayanthi, Rakesh Sinha, Rolee Sharma, Pavan Muttil
  • Publication number: 20070154562
    Abstract: The present invention relates to a biodegradable microparticle composition useful for the target specific drug delivery to manage pulmonary tuberculosis, said composition comprising two anti-tuberculosis drugs, and a biodegradable polymer for drug delivery in a ratio of about 1:2 to 2: 1, wherein the anti-tubercular drugs are in the ratio of 1:2 to 2:1, also, a process for the preparation of the composition, and lastly, a method of treating pulmonary tuberculosis in a subject, said method comprising administering by inhalation alone or in combination with oral route, pharmaceutically effective amount of the composition to the subject in need thereof, wherein the dosage for inhalation is ranging between 0.5 to 10 mg/kg body weight/day and that for oral route is ranging between 4 to 32 mg/kg body weight/day.
    Type: Application
    Filed: March 9, 2007
    Publication date: July 5, 2007
    Inventors: Himadri SEN, Suryakumar Jayanthi, Rakesh Sinha, Rolee Sharma, Pavan Muttil
  • Publication number: 20060233878
    Abstract: A pharmaceutical composition for controlled drug delivery comprising a ?-lactam antibiotic or its pharmaceutically acceptable hydrates, salts or esters, and one or more carbomers. The above ?-lactam antibiotics formulation avoids the limitations of known ?-lactam controlled release form which are found to be either complex and/or cost-extensive to obtain requiring multiphase and/or selective coatings or fail to achieve the desired controlled release for once daily dosage form. Importantly, in the ?-lactam antibiotic form of the above the rate-controlling polymer wherein the Cmax of the formulation is substantially the same as that of a single dose of the immediate release formulation. Also advantageously the formulation achieves a rate controlling polymer wherein the T>MIC for the formulation is more than 17 hours when the MIC is 0.25 mcg/ml and more than 10 hours when the MIC is 2 mcg/ml.
    Type: Application
    Filed: September 30, 2003
    Publication date: October 19, 2006
    Applicant: Lupin Limited
    Inventors: Shailesh Bhamare, Indu Bhushan, Himadri Sen
  • Publication number: 20060188568
    Abstract: Stabilized pharmaceutical solid composition of ACE inhibitor comprising an ACE inhibitor and a selective dosage formulation thereof comprising of meglumine. The ACE inhibitor selectively combined with a dosage form including essentially the meglumine is surprisingly found to avoid the degradation of ACE inhibitor by such dosage forms especially the commonly used pharmaceutical excepients. In particular, the presence of the meglumine in the dosage form for the active along with the active ACE inhibitor surprisingly avoid the degradation of the ACE inhibitor due to a) cyclization via internal nucleophilic attack to form substituted diketopiperazines, b) hydrolysis of the side chain ester group, and c) oxidation to form products having often unwanted coloration.
    Type: Application
    Filed: October 30, 2003
    Publication date: August 24, 2006
    Applicant: LUPIN LIMITED
    Inventors: Shailesh Bhamare, Indu Bhushan, Himadri Sen
  • Publication number: 20060149056
    Abstract: The present invention relates to a stable and bioavailable crystalline form of a third generation cephalosporin antibiotic, cefdinir and a process for the preparation thereof. The present invention also relates to a pharmaceutical composition containing the novel crystalline cefdinir, useful in the treatment of maladies such as bacterial infections.
    Type: Application
    Filed: March 2, 2006
    Publication date: July 6, 2006
    Applicant: LUPIN LTD
    Inventors: Girij Singh, Himadri Sen, Dhananjai Srivastava, Himanshu Godbole, Gurvinder Singh, Pravin Mahajan, Umesh Rananaware, Sagar Nehate, Sanjay Wagh
  • Publication number: 20050245738
    Abstract: The present invention relates to a stable and bioavailable crystalline form of a third generation cephalosporin antibiotic, cefdinir and a process for the preparation thereof. The present invention also relates to a pharmaceutical composition containing the novel crystalline cefdinir, useful in the treatment of maladies such as bacterial infections.
    Type: Application
    Filed: May 3, 2004
    Publication date: November 3, 2005
    Applicant: LUPIN LTD
    Inventors: Girij Singh, Himadri Sen, Dhananjai Srivastava, Himanshu Godbole, Gurvinder Singh, Pravin Mahajan, Umesh Rananaware, Sagar Nehate, Sanjay Wagh
  • Patent number: 6960356
    Abstract: A pharmaceutical composition in the form of tablets or capsules provides a combination of temporal and spatial control of drug delivery to a patient for effective therapeutic results. The pharmaceutical composition comprises a drug, a gas generating component, a swelling agent, a viscolyzing agent, and optionally a gel forming polymer. The swelling agent belongs to a class of compounds known as superdisintegrants (e.g., cross-linked polyvinylpyrrolidone or sodium carboxymethylcellulose). The viscolyzing agent initially and the gel forming polymer thereafter form a hydrated gel matrix which entraps the gas, causing the tablet or capsule to be retained in the stomach or upper part of the small intestine (spatial control). At the same time, the hydrated gel matrix creates a tortuous diffusion path for the drug resulting in sustained release of the drug (temporal control). A preferred once daily ciprofloxacin formulation comprises 69.9% profloxacin base, 0.34% sodium alginate, 1.103% xanthan gum, 13.
    Type: Grant
    Filed: July 2, 1999
    Date of Patent: November 1, 2005
    Assignee: Ranbaxy Laboratories Limited
    Inventors: Naresh Talwar, Himadri Sen, John N. Staniforth
  • Patent number: 6932981
    Abstract: A fast disintegrating controlled release oral composition comprising a core material containing cefuroxime axetil present as controlled release form, the cefuroxime axetil being provided with an outer coating of a copolymer selected from aqueous dispersions of enteric methacrylic acid and methacrylic acid esters anionic copolymers having carboxyl group as the functional group or mixtures thereof and an inner coating of a sustained-release copolymer selected from aqueous dispersions of acrylate and methacrylate pH independent copolymers having quaternary ammonium group as a functional group or mixtures thereof, and optionally probenecid. Additionally, the coating composition may contain plasticizers. The composition is suitable for once daily administration.
    Type: Grant
    Filed: August 13, 2001
    Date of Patent: August 23, 2005
    Assignee: Lupin Laboratories, Ltd.
    Inventors: Himadri Sen, Rajesh Suresh Kshirsagar, Anupa Ramesh Menjoge
  • Publication number: 20050175694
    Abstract: A pharmaceutical composition in the form of a tablet for controlled release of active ingredient(s) comprises lamivudione, zidovudine or combination of lamivudine and zidovudine or their pharmaceutically acceptable derivatives, and a mixture of hydrophilic polymers selected from the group consisting of at least one hydroxypropyl methylcellulose, at least one sodium alginate and at least one guar gum as controlled release matrix and a pharmaceutically acceptable calcium salt as a matrix stabilizer. The composition may also contain one or more of a water soluble and/or water dispersible diluent, wherein the quantities of the hydrophilic polymers, the calcium salt and water soluble and/or water dispersible diluents are such that the therapeutically effective active ingredient(s) is released at a rate suitable for once daily administration of the pharmaceutical composition. The tablets may be coated with a water soluble polymeric film coat.
    Type: Application
    Filed: April 23, 2002
    Publication date: August 11, 2005
    Inventors: Himadri Sen, Surva Jayanthi
  • Publication number: 20050084455
    Abstract: The present invention relates to a biodegradable microparticle composition useful for the target specific drug delivery to manage pulmonary tuberculosis, said composition comprising two anti-tuberculosis drugs, and a biodegradable polymer for drug delivery in a ratio of about 1:2 to 2:1, wherein the anti-tubercular drugs are in the ratio of 1:2 to 2:1, also, a process for the preparation of the composition, and lastly, a method of treating pulmonary tuberculosis in a subject, said method comprising administering by inhalation alone or in combination with oral route, pharmaceutically effective amount of the composition to the subject in need thereof, wherein the dosage for inhalation is ranging between 0.5 to 10 mg/kg body weight/day and that for oral route is ranging between 4 to 32 mg/kg body weight/day.
    Type: Application
    Filed: October 16, 2003
    Publication date: April 21, 2005
    Inventors: Himadri Sen, Suryakumar Jayanthi, Rakesh Sinha, Rolee Sharma, Pawan Muttil