Patents by Inventor Samir Kumar

Samir Kumar 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: 8431018
    Abstract: A supported carbon having high surface area, high pore volume containing (i) molybdenum (ii) a metal of non noble Group VIII, (iii) phosphorous, is used for hydrometallization of heavy crude oil and residue. The catalyst contains about 6 to 15 wt % molybdenum as MoO3, about 1 to 6 wt % cobalt or nickel as CoO or NiO and phosphorus as phosphorous oxide. One characteristic of the catalyst is the portion of pores having pore diameter in the range of 200 to 2000 Angstrom of 20 percent or more. The catalyst prepared by chelating agent has higher hydrodesulfurization activity assuming that more dispersed active metals are present on this catalyst. Long run activity studies show that catalyst having only molybdenum supported on activated carbon has good stability with time-on-stream and very high metal retention capacity.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: April 30, 2013
    Assignees: Instituto Mexicano del Petroleo, Toyo Engineering Corporation
    Inventors: Samir Kumar Maity, Jorge Ancheyta Juárez, Fernando Alonso Martínez, Hidetsugu Fukuyama, Satoshi Terai, Masayuki Uchida
  • Patent number: 8423432
    Abstract: Various embodiments of a system and method for authoritative item identification based on facility operations are described. Embodiments may include an authoritative item identification component configured to, for each particular item of multiple items in inventory of a materials handling facility, determine multiple identifiers for the particular item, where one or more of the multiple identifiers are electronically obtained from a unit of the particular item during operations of the materials handling facility. The authoritative item identification component may, for each of the multiple identifiers, determine a quantity of instances in which that identifier was electronically obtained from a given unit of the particular item. The authoritative item identification component may, based on a statistical analysis of the quantities, determine one of the multiple identifiers as being an authoritative identifier for the particular item.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: April 16, 2013
    Assignee: Amazon Technologies, Inc.
    Inventors: Priya Padmanabhan, Samir Kumar, Alexander C. Prater, Prajakta Vaidya, Eric Young
  • Patent number: 8394566
    Abstract: A toner composition with a novel surface additive package for developing images. The additive package includes sol-gel silica, a PDMS silica, an organic spacer such as PMMA and HMDS silica. The toner composition exhibits improved control of voltage, higher print density, lower toner amount remaining on the roll, lower toner usage, and reduced drum contamination. The toner composition also exhibits improved dry theological properties. These improved properties make this toner composition useful for higher speed printing while using less toner.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: March 12, 2013
    Assignee: Xerox Corporation
    Inventors: Grazyna E. Kmiecik-Lawrynowicz, Maura A. Sweeney, Daniel W. Asarese, Samir Kumar, Juan A. Morales-Tirado, Michael F. Zona
  • Patent number: 8366932
    Abstract: A novel method for treating sulfide-containing wastewater is described which involves treating sulfide-laden biogas produced in a bioreactor in a sulfide oxidizing unit (SOU). Oxidation in the SOU is monitored by an oxidation reduction potential (ORP) probe which minimizes the input of air/oxygen to produce elemental sulfur without significant production of sulfate.
    Type: Grant
    Filed: September 22, 2009
    Date of Patent: February 5, 2013
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Shihwu Sung, Samir Kumar Khanal, Thanapong Duangmanee
  • Patent number: 8268983
    Abstract: Present invention relates to a method for predicting an individual's bronchodilatory response to a ? agonist. Present invention particularly relates to the detection of specific allelic variants of the ?2AR gene and their use as pharmacogenetic markers towards response to ? agonist.
    Type: Grant
    Filed: September 8, 2008
    Date of Patent: September 18, 2012
    Assignees: Council of Scientific & Industrial Research, Piramal Life Sciences Limited
    Inventors: Ritushree Kukreti, Pallav Bhatnagar, Chandrika Rao, Balram Ghosh, Samir Kumar Brahmachari, Randeep Guleria, Chinmoyee Das
  • Patent number: 8252493
    Abstract: Single component toners are provided with at least one surface additive including a large polymeric spacer, and processes for producing the same. In embodiments, the toner is a non-magnetic single component toner produced by emulsion aggregation methods. The large polymeric spacer additives provide excellent flow characteristics to the resulting toners, and reduce the incidence of clogging failure and print defects such as ghosting, white bands, and low toner density compared with conventionally produced toners.
    Type: Grant
    Filed: October 15, 2008
    Date of Patent: August 28, 2012
    Assignee: Xerox Corporation
    Inventors: Samir Kumar, Grazyna L. Kmiecik-Lawrynowicz, Maura A. Sweeney, Michael L. Grande, Julie C. Pickering, Timothy L. Lincoln
  • Patent number: 8221953
    Abstract: The present disclosure provides emulsion aggregation (EA) toner particles having less pigment on the particle surface and a more uniform pigment distribution. The process of preparing the toner includes specific mixing speeds and use of specific temperatures during the emulsion aggregation process and the addition of a shell to the toner particles.
    Type: Grant
    Filed: May 21, 2010
    Date of Patent: July 17, 2012
    Assignee: Xerox Corporation
    Inventors: Juan A. Morales-Tirado, Chieh-Min Cheng, Daniel W. Asarese, Yolanda E. Maldonado, Samir Kumar, Elias Panides, Christopher M. Wolfe
  • Publication number: 20120129088
    Abstract: A toner composition with a novel surface additive package for developing images. The additive package includes sol-gel silica, a PDMS silica, an organic spacer such as PMMA and HMDS silica. The toner composition exhibits improved control of voltage, higher print density, lower toner amount remaining on the roll, lower toner usage, and reduced drum contamination. The toner composition also exhibits improved dry theological properties. These improved properties make this toner composition useful for higher speed printing while using less toner.
    Type: Application
    Filed: November 24, 2010
    Publication date: May 24, 2012
    Applicant: XEROX CORPORATION
    Inventors: Grazyna E. KMIECIK-LAWRYNOWICZ, Maura A. SWEENEY, Daniel W. ASARESE, Samir KUMAR, Juan A. MORALES-TIRADO, Michael F. ZONA
  • Publication number: 20120129089
    Abstract: A toner composition with a novel surface additive package for developing images. The additive package includes sol-gel silica, a PDMS silica, an organic spacer such as PMMA and two HMDS silicas. The toner composition exhibits improved control of voltage, higher print density, lower toner amount remaining on the roll, lower toner usage, and reduced drum contamination. The toner composition also exhibits improved dry rheological properties and improved fix properties. These improved properties make this toner composition useful for higher speed printing while using less toner.
    Type: Application
    Filed: November 24, 2010
    Publication date: May 24, 2012
    Applicant: XEROX CORPORATION
    Inventors: Grazyna E. KMIECIK-LAWRYNOWICZ, Maura A. SWEENEY, Daniel W. ASARESE, Robert CORLETO, Samir KUMAR, Juan A. MORALES-TIRADO, Michael F. ZONA
  • Patent number: 8185381
    Abstract: A unified filter bank for performing signal conversions may include an interface that receives signal conversion commands in relation to multiple types of compressed audio bitstreams. The unified filter bank may also include a reconfigurable transform component that performs a transform as part of signal conversion for the multiple types of compressed audio bitstreams. The unified filter bank may also include complementary modules that perform complementary processing as part of the signal conversion for the multiple types of compressed audio bitstreams. The unified filter bank may also include an interface command controller that controls the configuration of the reconfigurable transform component and the complementary modules.
    Type: Grant
    Filed: July 16, 2008
    Date of Patent: May 22, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Sang-Uk Ryu, Eddie L. T. Choy, Nidish Ramachandra Kamath, Samir Kumar Gupta, Suresh Devalapalli
  • Patent number: 8175871
    Abstract: Multiple microphone noise suppression apparatus and methods are described herein. The apparatus and methods implement a variety of noise suppression techniques and apparatus that can be selectively applied to signals received using multiple microphones. The microphone signals received at each of the multiple microphones can be independently processed to cancel echo signal components that can be generated from a local audio source. The echo cancelled signals may be processed by some or all modules within a signal separator that operates to separate or otherwise isolate a speech signal from noise signals. The signal separator can include a pre-processing de-correlator followed by a blind source separator. The output of the blind source separator can be post filtered to provide post separation de-correlation. The separated speech and noise signals can be non-linearly processed for further noise reduction, and additional post processing can be implemented following the non-linear processing.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: May 8, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Song Wang, Samir Kumar Gupta, Eddie L. T. Choy
  • Patent number: 8093004
    Abstract: Present invention relates to a method for predicting an individual's bronchodilatory response to a ? agonist. Present invention particularly relates to the detection of specific allelic variants of the ?2AR gene and their use as pharmacogenetic markers towards response to ? agonist.
    Type: Grant
    Filed: April 28, 2004
    Date of Patent: January 10, 2012
    Assignees: Council of Scientific & Industrial Research, Piramal Life Sciences Limited
    Inventors: Ritushree Kukreti, Pallav Bhatnagar, Chandrika Rao, Balram Ghosh, Samir Kumar Brahmachari, Randeep Guleria, Chinmoyee Das
  • Publication number: 20110287359
    Abstract: The present disclosure provides emulsion aggregation (EA) toner particles having less pigment on the particle surface and a more uniform pigment distribution. The process of preparing the toner includes specific mixing speeds and use of specific temperatures during the emulsion aggregation process and the addition of a shell to the toner particles.
    Type: Application
    Filed: May 21, 2010
    Publication date: November 24, 2011
    Applicant: XEROX CORPORATION
    Inventors: Juan A. Morales-Tirado, Chieh-Min Cheng, Daniel W. Asarese, Yolanda E. Maldonado, Samir Kumar, Elias Panides, Christopher M. Wolfe
  • Patent number: 8041057
    Abstract: This disclosure describes audio mixing techniques that intelligently combine two or more audio signals into an output signal. The techniques allow audio to be combined, yet create perceptual differentiation between the different audio signals. The result is that a user is able to hear both audio signals in a combined output, but the different audio signals do not perceptually interfere with one another. The techniques are relatively simple to implement and are well suited for radio telephones.
    Type: Grant
    Filed: June 7, 2006
    Date of Patent: October 18, 2011
    Assignee: QUALCOMM Incorporated
    Inventors: Pei Xiang, Eddie L. T. Choy, Prajakt V. Kulkarni, Samir Kumar Gupta
  • Publication number: 20110245492
    Abstract: The invention provides methods, PCR primers and sequence determination oligonucleotides for determining a human's capacity to metabolise a substrate of the CYP2C19 enzyme using genetic analysis.
    Type: Application
    Filed: May 16, 2011
    Publication date: October 6, 2011
    Inventors: Brahmachari Samir KUMAR, Kukreti Ritushree, Mukerji Mitali, Martis Suparna, Fernandes Ravina, Sharma Nitin
  • Publication number: 20110218097
    Abstract: A catalyst for hydrotreating, especially hydrodesulfurization, of residua and heavy crudes is prepared by synthesizing the support from titanium and boehmite, to form either a titanium/alumina support (TiO2/Al2O3) or a titanium-alumina support (TiO2—Al2O3) that is thereafter provided with at least one hydrogenating metal from group VIB in oxide form and a promoter from group VIII also in oxide form. The (TiO2/Al2O3) support is prepared from boehmite, which is peptized by using an inorganic acid, then extruded, calcined and impregnated with a solution containing titanium, while the (TiO2—Al2O3) support is prepared by admixing boehmite with a titanium-containing solution, peptized using an inorganic acid, extruded and calcined to obtain the titanium-alumina support.
    Type: Application
    Filed: May 13, 2011
    Publication date: September 8, 2011
    Applicant: INSTITUTO MEXICANO DEL PETROLEO
    Inventors: Patricia Rayo Mayoral, Jorge Ancheyta Juárez, Jorge Fernando Ramírez Solis, Samir Kumar Maity, Mohan Singh Rana, Fernando Alonso Martínez
  • Patent number: 7970564
    Abstract: This disclosure describes signal processing techniques that can improve the performance of blind source separation (BSS) techniques. In particular, the described techniques propose pre-processing steps that can help to de-correlate the different signals from one another prior to execution of the BSS techniques. In addition, the described techniques also propose optional post-processing steps that can further de-correlate the different signals following execution of the BSS techniques. The techniques may be particularly useful for improving BSS performance with highly correlated audio signals, e.g., from two microphones that are in close spatial proximity to one another.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: June 28, 2011
    Assignee: QUALCOMM Incorporated
    Inventors: Song Wang, Eddie L. T. Choy, Samir Kumar Gupta
  • Patent number: 7968069
    Abstract: A catalyst for hydrotreating, especially hydrodesulfurization, of residua and heavy crudes is prepared by synthesizing the support from titanium and boehmite, to form either a titanium/alumina support (TiO2/Al2O3) or a titanium-alumina support (TiO2—Al2O3) that is thereafter provided with at least one hydrogenating metal from group VIB in oxide form and a promoter from group VIII also in oxide form. The (TiO2/Al2O3) support is prepared from boehmite, which is peptized by using an inorganic acid, then extruded, calcined and impregnated with a solution containing titanium, while the (TiO2—Al2O3) support is prepared by admixing boehmite with a titanium-containing solution, peptized using an inorganic acid, extruded and calcined to obtain the titanium-alumina support.
    Type: Grant
    Filed: October 18, 2006
    Date of Patent: June 28, 2011
    Assignee: Instituto Mexicano del Petroleo
    Inventors: Patricia Rayo Mayoral, Jorge Ancheyta Juárez, Jorge Fernando Ramírez Solis, Samir Kumar Maity, Mohan Singh Rana, Fernando Alonso Martínez
  • Publication number: 20110100875
    Abstract: The invention relates to a method for synthesizing a hydroprocessing catalyst, wherein the support is prepared by mixing peptized aluminium with amorphous silica or with crystalline aluminium silicate as a catalyst component. The catalyst comprises a metal from group VIB and/or a metal from group VIIIB of the Periodic Table. The catalyst exhibits enhanced activity vis-à-vis hydrodisintegration, hydrodemetallization and hydrodesulphurization, and has a relatively stable life as a function of run time. Thus, the invention relates to a method for developing a catalyst for hydroprocessing heavy hydrocarbon feedstocks, which is characterized in that it comprises two steps: the first step involves optimization of the catalyst formulation with respect to textural properties, the number of acid sites and incorporation of the active metal; the second step involves evaluation with real feedstocks and the stability of the catalyst as is function of run time.
    Type: Application
    Filed: November 27, 2008
    Publication date: May 5, 2011
    Applicant: INSTITUTO MEXICANO DEL PETROLEO
    Inventors: Mohan Singh, Jorge Ancheyta-Juarez, Zenaida Carolina Leyva Inzunza, Samir Kumar Maity
  • Publication number: 20110086304
    Abstract: The present disclosure provides toners and methods for their production. In embodiments, the toner may include a core/shell configuration, with a non-crosslinked resin and a crosslinked resin in the core, with a second non-crosslinked resin in the shell, pigment/pigments and a wax possessing both branched and linear carbons.
    Type: Application
    Filed: October 8, 2009
    Publication date: April 14, 2011
    Applicant: Xerox Corporation
    Inventors: Daniel W. Asarese, Grazyna E. Kmiecik-Lawrynowicz, Samir Kumar, Maura A. Sweeney, Siddhesh N. Pawar, Robert D. Bayley