Patents by Inventor Ajay Singh

Ajay Singh 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: 8093391
    Abstract: This invention relates to an improved and scalable process for the preparation of substantially pure palonosetron and its acid addition salts, in particular hydrochloride (I) which comprises of, (a) converting intermediate (IIa) as such or as its freebase (II) to a crude mixture of diastereomeric palonosetrons (VIII) or (VIIIa) contaminated with varying amounts of unconverted intermediate (II) or (IIa) via hydrogenation under pressure with an appropriately chosen hydrogenation catalyst in an suitable organic solvent. (b) making the resulting crude mixture of diastereomeric palonosetrons (VIII) or (VIIIa) contaminated with varying amounts of unconverted intermediate (II) or (IIa) substantially free from (II) or (IIa) via halogenation reaction.
    Type: Grant
    Filed: January 5, 2010
    Date of Patent: January 10, 2012
    Assignee: Sterling Biotech Research Center
    Inventors: Sugata Chatterjee, Ajay Singh Rawat, Anil V. Pawar, Jetti Rajanikanth, Penigandla Venkateswarlu
  • Publication number: 20110282074
    Abstract: This invention relates to an improved process for preparing substantially pure simvastatin (I), chemically known as (1S,3R,7S,8S,8aR)-8-[2-[(2R,4R)-4-hydroxy-6-oxotetrahydro-2-H-pyran-2-yl]ethyl]-3 ,7-dimeth-yl-1,2,3,7,8,8a-Hexahydronaphthalen-1-yl2,2-dimethyl butanoate, which comprises of: a) treating lovastatin (II) with an alkali metal hydroxide in a chosen suitable alcoholic solvent followed by relactonization to obtain the diol lactone intermediate (III) in a single vessel. b) selective silylation of 4-hydroxy group of diol lactone intermediate (III) with a chosen suitable silylating reagent to obtain mono silylated intermediate diol lactone (IV).
    Type: Application
    Filed: July 8, 2010
    Publication date: November 17, 2011
    Applicant: Sterling Biotech Research Center a Corporate Research Centre of Sterling Biotech Limited
    Inventors: Sugata Chatterjee, Ajay Singh Rawat, Neeraj Kumar, Jetti Rajanikanth, Kundan Singh Shekhawat, Jigar H. Shah, P. Venkateswarlu
  • Publication number: 20110281874
    Abstract: Provided are compounds that are useful in the treatment and/or prevention of diseases mediated by deficient levels of glucokinase activity, such as diabetes mellitus. Also provided are methods of treating or preventing diseases and disorders characterized by underactivity of glucokinase or which can be treated by activating glucokinase.
    Type: Application
    Filed: July 27, 2011
    Publication date: November 17, 2011
    Applicant: ARRAY BIOPHARMA INC.
    Inventors: Thomas D. AICHER, Steven Armen BOYD, Mark Joseph CHICARELLI, Kevin Ronald CONDROSKI, Ronald Jay HINKLIN, Ajay SINGH
  • Patent number: 8022223
    Abstract: Provided are compounds of formula I that are useful in the treatment and/or prevention of diseases mediated by deficient levels of glucokinase activity, such as diabetes meilitus. Also provided are methods of treating or preventing diseases and disorders characterized by underactivity of glucokinase or which can be treated by activating glucokinase.
    Type: Grant
    Filed: March 23, 2007
    Date of Patent: September 20, 2011
    Assignee: Array Biopharma, Inc.
    Inventors: Thomas D. Aicher, Steven Armen Boyd, Mark Joseph Chicarelli, Kevin Ronald Condroski, Ronald Jay Hinklin, Ajay Singh
  • Patent number: 8022222
    Abstract: Provided are compounds of formula I wherein R2, L, Z, Y, G and R1 are as defined herein, that are useful in the treatment and/or prevention of diseases or disorders mediated by deficient levels of glucokinase activity or which can be treated by activating glucokinase including, but not limited to, diabetes mellitus, impaired glucose tolerance, IFG (impaired fasting glucose) and IFG (impaired fasting glycemia), as well as other diseases and disorders such as those discussed herein.
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: September 20, 2011
    Assignee: Array Biopharma, Inc.
    Inventors: Thomas D. Aicher, Steven Armen Boyd, Mark Joseph Chicarelli, Kevin Ronald Condroski, Rustam Ferdinand Garrey, Ronald Jay Hinklin, Ajay Singh, Timothy M. Turner
  • Patent number: 8011605
    Abstract: Sewage sludge that has been de-watered to 25% solids is subjected to a combination of shearing and heating that liquefies the sludge, and drops its viscosity to below 12,000 cP. The fact of liquefaction prepares the sludge such that subsequent drying can be done more cost-effectively than hitherto. After drying, the dried sludge can be incinerated.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: September 6, 2011
    Assignee: Lystek International Inc.
    Inventors: Owen Patrick Ward, Ajay Singh
  • Patent number: 7897613
    Abstract: The present invention relates to novel crystalline forms of the platelet aggregation inhibitor (+)-(S)-methyl-2-(2-chlorophenyl)-(6,7-dihydro-4H-thieno[3,2-c]pyrid-5-yl)acetate, clopidogrel (1), in the form of hydrogen bromide salts, identified as polymorph forms 1, 2 and 3. The present invention further relates to processes for preparing such forms, pharmaceutical compositions comprising such forms, and uses for such forms and compositions. The pharmaceutical compositions may be used, in particular, for inhibiting platelet aggregation or for treating, preventing or managing thrombosis, atherothrombosis, an atherothrombotic event, ischaemic stroke, myocardial infarction, non-Q-wave myocardial infarction, atherosclerosis, peripheral arterial disease, or unstable angina. The present invention also relates to methods of treating said disorders. Formula (1).
    Type: Grant
    Filed: September 9, 2004
    Date of Patent: March 1, 2011
    Assignee: Generics [UK] Limited
    Inventors: Ramakrishnan Arul, Ajay Singh Rawat, Maheshkumar Gadakar, Rajesh Rao, Abhinay Pise, Jason Gray
  • Publication number: 20110021778
    Abstract: This invention relates to an improved and scalable process for the preparation of substantially pure palonosetron and its acid addition salts, in particular hydrochloride (I) which comprises of, (a) converting intermediate (IIa) as such or as its freebase (II) to a crude mixture of diastereomeric palonosetrons (VIII) or (VIIIa) contaminated with varying amounts of unconverted intermediate (II) or (IIa) via hydrogenation under pressure with an appropriately chosen hydrogenation catalyst in an suitable organic solvent. (b) making the resulting crude mixture of diastereomeric palonosetrons (VIII) or (VIIIa) contaminated with varying amounts of unconverted intermediate (II) or (IIa) substantially free from (II) or (IIa) via halogenation reaction.
    Type: Application
    Filed: January 5, 2010
    Publication date: January 27, 2011
    Inventors: Sugata Chatterjee, Ajay Singh Rawat, Anil V. Pawar, Jetti Rajanikanth, P. Venkateswarlu
  • Publication number: 20100286211
    Abstract: The present invention relates to certain substituted phenyl oxazolidinones and to processes for the synthesis of the same. This invention also relates to pharmaceutical compositions containing the compounds of the present invention as antimicrobials. The compounds are useful antimicrobial agents, effective against a number of human and veterinary pathogens, including gram-positive aerobic bacteria, for example, multiple-resistant staphylococci, streptococci and enterococci as well as anaerobic organisms, for example, Bacterioides spp. and Clostridia spp. species, and acid fast organisms, for example, Mycobacterium tuberculosis, Mycobacterium avium and Mycobacterium spp.
    Type: Application
    Filed: October 6, 2005
    Publication date: November 11, 2010
    Inventors: Biswajit Das, Shahadal Ahmed, Ajay Singh Yadav, Soma Ghosh, Arti Gujrati, Pankaj Sharma, Ashok Rattan
  • Publication number: 20100279679
    Abstract: A network comprising a component configured to update an active set (AS) of cells based on a collective consideration of a plurality of cell measurement reports received during radio reconfiguration. Also included is a user equipment (UE), comprising a component configured such that the UE combines a plurality of cell measurement reports triggered briefly before and/or during radio reconfiguration, the combined measurement report used to update an AS of cells. Also included is a method comprising transmitting a radio bearer reconfiguration message, receiving a plurality of cell measurement reports, receiving a radio bearer reconfiguration complete message, and updating a plurality of AS cells using the combined cell measurement reports. Also included is a method comprising receiving a radio bearer reconfiguration message, obtaining a plurality of cell measurement reports, and sending a combined cell measurement report based on the cell measurement reports.
    Type: Application
    Filed: April 29, 2010
    Publication date: November 4, 2010
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: Gordon Peter YOUNG, Anthony TOD, Ajay SINGH, Richard Charles BURBIDGE, Takashi SUZUKI, Claude Jean-Frederic ARZELIER
  • Publication number: 20100223969
    Abstract: Sewage sludge is dewatered to a cake-like state. The viscosity of the sludge is lowered by admixing a quantity of urea, urea-ammonium-nitrate, or other nitrogen-containing material, in with the dewatered sludge. The treatment also removes pathogens, and renders the product suitable for use as a fertilizer.
    Type: Application
    Filed: March 3, 2010
    Publication date: September 9, 2010
    Applicant: LYSTEK INTERNATIONAL INC.
    Inventors: Owen P. Ward, Ajay Singh
  • Publication number: 20100204240
    Abstract: Provided are compounds of Formula (I): wherein R2, R3, R13, L and D2 are as defined in the specification, which are useful in the treatment and/or prevention of diseases or disorders mediated by deficient levels of glucokinase activity or which can be treated by activating glucokinase including, but not limited to, diabetes mellitus, impaired glucose tolerance, IFG (impaired fasting glucose) and IFG (impaired fasting glycemia), as well as other diseases and disorders such as those discussed herein.
    Type: Application
    Filed: September 15, 2008
    Publication date: August 12, 2010
    Applicant: ARRAY BIOPHARMA INC.
    Inventors: Thomas Daniel Aicher, Steven Armen Boyd, Mark Joseph Chicarelli, Kevin Ronald Condroski, Jay Bradford Fell, John P. Fischer, Indrani W. Gunawardana, Ronald Jay Hinklin, Ajay Singh, Timothy M. Tumer, Eli M. Wallce
  • Patent number: 7736511
    Abstract: Already-treated sludge is fed back into incoming sewage, and is effective to supply nutrients needed for the microbiological breakdown of the sludge. The feedback sludge has a solids content of 10% or more, and has been sheared and heated to drive its viscosity down to 10,000 cP or less. In sludge done that way, nutrients are preserved and presented to the sewage to be treated in highly liquidized and solubilized form, whereby the nutrients are very bio-available to the microbes in the sewage. Large improvements in the elimination of biomass can result.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: June 15, 2010
    Assignee: Lystek International Inc.
    Inventors: Andrew Jerry Lugowski, George Fouad Nakhla, Ajay Singh, Owen Patrick Ward, Frederick Alan Mosher
  • Publication number: 20100105659
    Abstract: Provided are compounds that are useful in the treatment and/or prevention of diseases mediated by deficient levels of glucokinase activity, such as diabetes mellitus. Also provided are methods of treating or preventing diseases and disorders characterized by underactivity of glucokinase or which can be treated by activating glucokinase.
    Type: Application
    Filed: March 19, 2008
    Publication date: April 29, 2010
    Applicant: ARRAY BIOPPHARMA INC.
    Inventors: Thomas Daniel Aicher, Steven Armen Boyd, Mark Joseph Chicarelli, Kevin Ronald Condroski, Ronald Jay Hinklin, Ajay Singh
  • Publication number: 20100099713
    Abstract: Provided are compounds having the Formula I or salts thereof, wherein R2, L, R3, R11, D2 and R13 are as defined herein, that are useful in the treatment and/or prevention of diseases mediated by deficient levels of glucokinase activity, such as diabetes mellitus. Also provided are methods of treating or preventing diseases and disorders characterized by underactivity of glucokinase or which can be treated by activating glucokinase.
    Type: Application
    Filed: January 16, 2008
    Publication date: April 22, 2010
    Applicant: ARRAY BIOPHARMA INC.
    Inventors: Thomas Daniel Aicher, Steven Armen Boyd, Mark Joseph Chicarelli, Kevin Ronald Condroski, Rustam Ferdinand Garrey, Ronald Jay Hinklin, Ajay Singh, Timothy M. Turner
  • Publication number: 20100089823
    Abstract: Already-treated sludge is fed back into incoming sewage, and is effective to supply nutrients needed for the microbiological breakdown of the sludge. The feedback sludge has a solids content of 10% or more, and has been sheared and heated to drive its viscosity down to 10,000 cP or less. In sludge done that way, nutrients are preserved and presented to the sewage to be treated in highly liquidised and solubilised form, whereby the nutrients are very bio-available to the microbes in the sewage. Large improvements in the elimination of biomass can result.
    Type: Application
    Filed: October 10, 2008
    Publication date: April 15, 2010
    Inventors: Andrew Jerry Lugowski, Georges Fouad Nakhla, Ajay Singh, Owen Patrick Ward, Frederick Alan Mosher
  • Publication number: 20100022777
    Abstract: An improved, scalable, and environmentally friendly manufacturing procedure for the preparation of E-3-[2-(7-chloro-2-quinolinyl)ethenyl]benzaldehyde, which is a key early intermediate used in the preparation of montelukast sodium, and the compound prepared by such a process.
    Type: Application
    Filed: October 29, 2008
    Publication date: January 28, 2010
    Applicant: Sterling Biotech Limited
    Inventors: Sugata Chatterjee, Ajay Singh Rawat, Neeraj Kumar, Mukesh Chavda, Rushikesh Kadu
  • Publication number: 20090319772
    Abstract: A network storage server receives multiple write requests from a set of clients via a network and internally buffers multiple data blocks written by the write requests. At a consistency point, the storage server commits the data blocks to a nonvolatile mass storage facility. The consistency point process includes using a storage operating system in the network storage server to compress the data blocks, encrypt selected data blocks, and store the compressed and (possibly) encrypted data blocks in the nonvolatile mass storage facility. Data blocks can also be fingerprinted in parallel with compression and/or encryption, to facilitate subsequent deduplication. Data blocks can be indexed and classified according to content or attributes of the data. Encryption can be applied at different levels of logical container granularity, where a separate, unique cryptographic key is used for each encrypted logical container.
    Type: Application
    Filed: April 25, 2008
    Publication date: December 24, 2009
    Applicant: NetApp, Inc.
    Inventors: Ajay Singh, Ananthan Subramanian, Christoph Kogelnik
  • Publication number: 20090247526
    Abstract: Provided are compounds of formula I wherein R2, L, Z, Y, G and R1 are as defined herein, that are useful in the treatment and/or prevention of diseases or disorders mediated by deficient levels of glucokinase activity or which can be treated by activating glucokinase including, but not limited to, diabetes mellitus, impaired glucose tolerance, IFG (impaired fasting glucose) and IFG (impaired fasting glycemia), as well as other diseases and disorders such as those discussed herein.
    Type: Application
    Filed: January 24, 2007
    Publication date: October 1, 2009
    Applicant: ARRAY BIOPHARMA INC.
    Inventors: Thomas D. Aicher, Steven Armen Boyd, Mark Joseph Chicarelli, Kevin Ronald Condroski, Rustam Ferdinand Garrey, Ronald Jay Hinklin, Ajay Singh, Timothy M. Turner
  • Publication number: 20090156603
    Abstract: Provided are compounds of formula I that are useful in the treatment and/or prevention of diseases mediated by deficient levels of glucokinase activity, such as diabetes meilitus. Also provided are methods of treating or preventing diseases and disorders characterized by underactivity of glucokinase or which can be treated by activating glucokinase.
    Type: Application
    Filed: March 23, 2007
    Publication date: June 18, 2009
    Applicant: Array BioPharma Inc.
    Inventors: Thomas D. Aicher, Steven Armen Boyd, Mark Joseph Chicarelli, Kevin Ronald Condroski, Ronald Jay Hinklin, Ajay Singh