Patents by Inventor Biswajit Das

Biswajit Das 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: 20160143917
    Abstract: A pharmaceutical composition for inducing reactivation of latent provirus in an HIV infected cell includes an ESR-1 antagonist or an ESR-1 coactivator antagonist and a pharmaceutically acceptable carrier.
    Type: Application
    Filed: July 29, 2014
    Publication date: May 26, 2016
    Inventors: Jonathan Karn, Biswajit Das
  • Publication number: 20150140232
    Abstract: A system and method A method of growing an elongate nanoelement from a growth surface includes: (a) cleaning a growth surface on a base element; (b) providing an ultrahigh vacuum reaction environment over the cleaned growth surface; (c) generating a reactive gas of an atomic material to be used in forming the nanoelement; (d) projecting a stream of the reactive gas at the growth surface within the reactive environment while maintaining a vacuum of at most 1×10?4 Pascal; (e) growing the elongate nanoelement from the growth surface within the environment while maintaining the pressure of step c); (f) after a desired length of nanoelement is attained within the environment, stopping direction of reactive gas into the environment; and (g) returning the environment to an ultrahigh vacuum condition.
    Type: Application
    Filed: January 26, 2015
    Publication date: May 21, 2015
    Inventors: Biswajit Das, Myung B. Lee
  • Patent number: 8952010
    Abstract: A compound represented by the following formula (I) or a salt thereof: wherein R represents a hydrogen atom, a hydroxy group, or a halogen atom Ar1 represents a bicyclic heterocyclic group represented by the following formula: ?and Ar2 represents a bicyclic heterocyclic group represented by the following formulae:
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: February 10, 2015
    Assignee: Daiichi Sankyo Company, Limited
    Inventors: Hiroaki Inagaki, Tetsunori Fujisawa, Masao Itoh, Aki Yokomizo, Toshifumi Tsuda, Saito Higuchi, Biswajit Das, Rita Katoch, Dilip J. Upadhyay
  • Patent number: 8945304
    Abstract: A system and method A method of growing an elongate nanoelement from a growth surface includes: a) cleaning a growth surface on a base element; b) providing an ultrahigh vacuum reaction environment over the cleaned growth surface; c) generating a reactive gas of an atomic material to be used in forming the nanoelement; d) projecting a stream of the reactive gas at the growth surface within the reactive environment while maintaining a vacuum of at most 1×10?4 Pascal; e) growing the elongate nanoelement from the growth surface within the environment while maintaining the pressure of step c); f) after a desired length of nanoelement is attained within the environment, stopping direction of reactive gas into the environment; and g) returning the environment to an ultrahigh vacuum condition.
    Type: Grant
    Filed: August 13, 2008
    Date of Patent: February 3, 2015
    Assignee: The Board of Regents of the Nevada System of Higher Education on behalf of the University of Nevada, Las Vegas University of Nevada
    Inventors: Biswajit Das, Myung B. Lee
  • Publication number: 20140187542
    Abstract: A compound represented by the following formula (I) or a salt thereof: wherein R represents a hydrogen atom, a hydroxy group, or a halogen atom Ar1 represents a bicyclic heterocyclic group represented by the following formula: and Ar2 represents a bicyclic heterocyclic group represented by the following formulae:
    Type: Application
    Filed: February 6, 2012
    Publication date: July 3, 2014
    Applicant: DAIICHI SANKYO COMPANY, LIMITED
    Inventors: Hiroaki Inagaki, Tetsunori Fujisawa, Masao Itoh, Aki Yokomizo, Toshifumi Tsuda, Saito Higuchi, Biswajit Das, Rita Katoch, Dilip J. Upadhyay
  • Publication number: 20140148459
    Abstract: This invention also relates to pharmacological compositions containing the compounds of the present invention, and methods of treating asthma, rheumatoid arthritis, COPD, rhinitis, osteoarthritis, psoriatic arthritis, psoriasis, pulmonary fibrosis, pulmonary inflammation, acute respiratory distress syndrome, periodontitis, multiple sclerosis, gingivitis, gingivitis, atherosclerosis, dry eye, neointimal proliferation, which leads to restenosis and ischemic heart failure, stroke, renal diseases, tumor metastasis, and pounds.
    Type: Application
    Filed: September 26, 2011
    Publication date: May 29, 2014
    Applicant: RANBAXY LABORATORIES LIMITED
    Inventors: Manoj Kumar Khera, Ajay Soni, Jitendra Sattigeri, Viswajanani Sattigeri, Biswajit Das, Ian A. Cliffe, Pradip Kumar Bhatnagar, Abdul Rehman Abdul Rauf, Arpita Musib, Subham Saha, Neeraj Kumar Yadav, Sabir Ahammed, Ranadheer R. Reddy, Abhijit Ray, Punit Srivastava, Sunanda Ghosh Dastidar
  • Publication number: 20140005554
    Abstract: Systems enable a method of determining the rate of flow of a bodily fluid through a vessel in a live patient by: positioning at least two separate passive infrared sensors at two points along a length of the vessel; sensing local temperature changes at the two points along the vessel to generate signals of the local temperature changes from each passive infrared sensor; a processor receiving the signals and quantifying the local temperature changes at the two points; and the processor executing code to determine blood flow rate in the vessel from the local temperature changes quantified by the processor at the two points.
    Type: Application
    Filed: December 19, 2012
    Publication date: January 2, 2014
    Inventors: Biswajit Das, Frank van Breukelen
  • Publication number: 20120132534
    Abstract: Methods, apparatus and systems form structures from nanoparticles by providing a source of nanoparticles, the particles being capable of being moved by application of a field, such as an electrical field, magnetic field and even electromagnetic radiation or fields such as light, UV, IR, radiowaves, radiation and the like; depositing the nanoparticles to a surface in a first distribution of the nanoparticles; applying a field to the nanoparticles on the surface that applies a force to the particles; and rearranging the nanoparticles on the surface by the force from the field to form a second distribution of nanoparticles on the surface. Nanoparticle catalysts can be deposited on the surfaces. The second distribution of nanoparticles is more ordered or more patterned than the first distribution of nanoparticles as a result of the rearranging. Nanotubes can then be grown on the ordered nanoparticle deposited catalysts.
    Type: Application
    Filed: November 8, 2007
    Publication date: May 31, 2012
    Inventor: Biswajit Das
  • Patent number: 8084101
    Abstract: Methods, apparatus and systems form structures from nanoparticles by: providing a source of nanoparticles, the particles being capable of being moved by application of a field, such as an electrical field, magnetic field and even electromagnetic radiation or fields such as light, UV, IR, radiowaves, radiation and the like; depositing the nanoparticles to a surface in a first distribution of the nanoparticles; applying a field to the nanoparticles on the surface that applies a force to the particles; and rearranging the nanoparticles on the surface by the force from the field to form a second distribution of nanoparticles on the surface. The second distribution of nanoparticles is more ordered or more patterned than the first distribution of nanoparticles as a result of the rearranging.
    Type: Grant
    Filed: August 1, 2007
    Date of Patent: December 27, 2011
    Assignee: The Board of Regents of the Nevada Systems of Higher Education on behalf of the University of Nevada, Las Vegas
    Inventor: Biswajit Das
  • Patent number: 8076370
    Abstract: Provided herein are substituted aromatic compounds, which are tRNA synthetase inhibitors, and hence can be used as antimicrobial agents. Compounds described herein can be used for the treatment or prevention of a condition caused by or contributed to by gram positive, gram negative, anaerobic bacteria or fungal organisms, more particularly against bacterium, for example, Staphylococci, Enterococci, Streptococci, Haemophilus, Moraxalla, Escherichia, Chlamydia, Mycoplasm, Legionella, Mycobacterium, Helicobacter, Clostridium, Bacteroides, Corynebacterium, Bacillus or Enterobactericeae, and fungal organisms, for example, Aspergillus, Blastomyces, Candida, Coccidiodes, Cryptococcus, Epidermophyton, Hendersonula, Histoplasma, Microsporum, Paecilomyces, Paracoccidiodes, Pneumocystis, Trichophyton, or Trichosporium. Processes for the preparation of these compounds, pharmaceutical compositions thereof, and methods of treating microbial infections are also provided.
    Type: Grant
    Filed: May 3, 2006
    Date of Patent: December 13, 2011
    Assignee: Ranbaxy Laboratories Limited
    Inventors: Biswajit Das, Jasbir Singh Arora, Shahadat Ahmed, Anish Bandyopadhyay, Rita Katoch, Santosh Haribhau Kurhade, Sujata Rathy, Soma Ghosh, Abhijit Datta Khoje, Arti Gujrati, Dilip J. Upadhyay
  • 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
  • Patent number: 7790560
    Abstract: Methods, apparatus and systems form memory structures, such as flash memory structures from nanoparticles by providing a source of nanoparticles as a conductive layer. The particles are moved by application of a field, such as an electrical field, magnetic field and even electromagnetic radiation. The nanoparticles are deposited onto an insulating surface over a transistor in a first distribution of the nanoparticles. A field is applied to the nanoparticles on the surface that applies a force to the particles, rearranging the nanoparticles on the surface by the force from the field to form a second distribution of nanoparticles on the surface. A protective and enclosing insulating layer is deposited on the nanoparticle second distribution. The addition of a top conductive layer completes a basic flash memory structure.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: September 7, 2010
    Assignee: Board of Regents of the Nevada System of Higher Education
    Inventor: Biswajit Das
  • Patent number: 7592335
    Abstract: Provided herein are novel substituted phenyl oxazolidinones and to processes for the synthesis thereof. Also provided are pharmaceutical compositions comprising one or more compounds described herein The compounds described can be useful antimicrobial agents, which can be effective against a number of human and veterinary pathogens, including gram-positive aerobic bacteria such as multiple-resistant staphylococci, streptococci and enterococci, as well as, anaerobic organisms, such as Bacterioides spp. and Clostridia spp. species, and acid fast organisms, such as Mycobacterium tuberculosis, Mycobacterium avium and Mycobacterium spp.
    Type: Grant
    Filed: April 12, 2006
    Date of Patent: September 22, 2009
    Assignee: Ranbaxy Laboratories Limited
    Inventors: Biswajit Das, Sonali Rudra, Sangita Sangita, Mohammad Salman, Ashok Rattan
  • Publication number: 20090215764
    Abstract: Provided herein are substituted aromatic compounds, which are tRNA synthetase inhibitors, and hence can be used as antimicrobial agents. Compounds described herein can be used for the treatment or prevention of a condition caused by or contributed to by gram positive, gram negative, anaerobic bacteria or fungal organisms, more particularly against bacterium, for example, Staphylococci, Enterococci, Streptococci, Haemophilus, Moraxalla, Escherichia, Chlamydia, Mycoplasm, Legionella, Mycobacterium, Helicobacter, Clostridium, Bacteroides, Corynebacterium, Bacillus or Enterobactericeae, and fungal organisms, for example, Aspergillus, Blastomyces, Candida, Coccidiodes, Cryptococcus, Epidermophyton, Hendersonula, Histoplasma, Microsporum, Paecilomyces, Paracoccidiodes, Pneumocystis, Trichophyton, or Trichosporium. Processes for the preparation of these compounds, pharmaceutical compositions thereof, and methods of treating microbial infections are also provided.
    Type: Application
    Filed: May 3, 2006
    Publication date: August 27, 2009
    Inventors: Biswajit Das, Jasbir Singh Arora, Shahadat Ahmed, Anish Bandyopadhyay, Rita Katoch, Santosh Haribhau Kurhade, Sujata Rathy, Soma Ghosh, Abhijit Datta Khoje, Arti Gujrati, Dilip J. Upadhyay
  • Publication number: 20090170790
    Abstract: The present invention provides ketolide derivatives, which can be used as anti-bacterial agents. Compounds disclosed herein can be used for the treating or preventing conditions caused by or contributed to by gram positive, gram negative or anaerobic bacteria, more particularly against, for example, Staphylococci, Streptococci, Enterococci, Haemophilus, Moraxalla spp., Chlamydia spp., Mycoplasm, Legionella spp., Mycobacterium, Helicobacter, Clostridium, Bacteroides, Corynebacterium, Bacillus, Enterobactericeae or any combination thereof. Also provided are processes for preparing compounds disclosed herein, intermediates used in their synthesis, pharmaceutical compositions thereof, and methods of treating bacterial infections.
    Type: Application
    Filed: October 25, 2005
    Publication date: July 2, 2009
    Inventors: Biswajit Das, Mohammad Salman, Santosh Haribhau Kurhade, Ramadass Venkataramanan, Rajesh Kumar, Gobind Singh Kapkoti, Rita Katoch, Anish Bandyopadhyay, Ashok Rattan
  • Publication number: 20090130225
    Abstract: The present invention provides macrolide derivatives, which can be used as antibacterial agents. Compounds described herein can be used for treating or preventing conditions caused by or contributed to by gram-positive, gram-negative or anaerobic bacteria, more particularly against, for example, Staphylococci, Streptococci, Enterococci, Haemophilus, Moraxalla spp., Chlamydia spp., Mycoplasm, Legionella spp., Mycobacterium, Helicobacter, Clostridium, Bacteroides, Corynebacterium, Propionibeacterium, Bacillus, Enterobactericeae or any combination thereof. Also provided are processes for preparing compounds described herein, pharmaceutical compositions thereof, and methods of treating bacterial infections.
    Type: Application
    Filed: November 21, 2006
    Publication date: May 21, 2009
    Inventors: Anjan Chakrabarti, Biswajit Das, Jitendra Sambhaji Jadhav, Dilip J. Upadhyay
  • Publication number: 20090075916
    Abstract: This invention relates to 14-membered macrolide derivatives for treating or preventing acne vulgaris and associated inflammatory conditions. Also provided herein are medicaments or pharmaceutical compositions comprising one or more 14-membered macrolide derivatives together with one or more pharmaceutically acceptable carriers, excipients, diluents or mixture thereof, and methods for treating or preventing acne vulgaris and associated inflammatory conditions.
    Type: Application
    Filed: November 22, 2006
    Publication date: March 19, 2009
    Inventors: Dilip J. Upadhyay, Anjan Chakrabarti, Biswajit Das, Radhakrishnan Gowrishankar
  • Publication number: 20090047427
    Abstract: A system and method A method of growing an elongate nanoelement from a growth surface includes: a) cleaning a growth surface on a base element; b) providing an ultrahigh vacuum reaction environment over the cleaned growth surface; c) generating a reactive gas of an atomic material to be used in forming the nanoelement; d) projecting a stream of the reactive gas at the growth surface within the reactive environment while maintaining a vacuum of at most 1×10?4 Pascal; e) growing the elongate nanoelement from the growth surface within the environment while maintaining the pressure of step c); f) after a desired length of nanoelement is attained within the environment, stopping direction of reactive gas into the environment; and g) returning the environment to an ultrahigh vacuum condition.
    Type: Application
    Filed: August 13, 2008
    Publication date: February 19, 2009
    Inventors: Biswajit Das, Myung B. Lee
  • Publication number: 20090018174
    Abstract: Provided herein are macrolide derivatives that can be useful in treating or preventing inflammatory diseases. Also provided are pharmaceutical compositions comprising one or more macrolide derivatives optionally together with one or more pharmaceutically acceptable carriers, excipients, diluents or mixtures thereof, as well as methods for treating or preventing inflammatory diseases.
    Type: Application
    Filed: November 8, 2006
    Publication date: January 15, 2009
    Inventors: Pradip Kumar Bhatnagar, Anjan Chakrabarti, Biswajit Das, Malini Bajpai, Abhijit Ray
  • Publication number: 20080318878
    Abstract: The present invention provides acylide derivatives, which can be used as antibacterial agents. Compounds disclosed herein can be used for treating or preventing conditions caused by or contributed to by Gram-positive, Gram-negative or anaerobic bacteria, more particularly against, for example, Staphylococci, Streptococci, Enterococci, Haemophilus, Moraxalla spp., Chlamydia spp., Mycoplasm, Legionella spp., Mycobacterium, Helicobacter, Clostridium, Bacteroides, Corynebacterium, Bacillus, Enterobactericeae or any combination thereof. Also provided are processes for preparing compounds disclosed herein, pharmaceutical compositions thereof, and method of treating bacterial infections.
    Type: Application
    Filed: September 27, 2005
    Publication date: December 25, 2008
    Inventors: Biswajit Das, Rita Katoch, Atul Kashinath Hajare, Anish Bandyopadhyay, Santosh Haribhau Kurhade, Sujata Rathy, Ashok Rattan