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: 8974999
    Abstract: Toner compositions that having spherical particles and provide stable density. The toner compositions also comprise and deliver a silicone oil to the cleaning subsystem in the image forming apparatus by incorporating an inorganic fine powder additive package that has been mixed with silicone oil in a manner such that the toner is blended with the inorganic fine powder and silicone oil.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: March 10, 2015
    Assignee: Xerox Corporation
    Inventors: Juan A. Morales-Tirado, Mark E. Mang, Michael F. Zona, Samir Kumar, Susan J. LaFica
  • Patent number: 8954324
    Abstract: Voice activity detection using multiple microphones can be based on a relationship between an energy at each of a speech reference microphone and a noise reference microphone. The energy output from each of the speech reference microphone and the noise reference microphone can be determined. A speech to noise energy ratio can be determined and compared to a predetermined voice activity threshold. In another embodiment, the absolute value of the autocorrelation of the speech and noise reference signals are determined and a ratio based on autocorrelation values is determined. Ratios that exceed the predetermined threshold can indicate the presence of a voice signal. The speech and noise energies or autocorrelations can be determined using a weighted average or over a discrete frame size.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: February 10, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Song Wang, Samir Kumar Gupta, Eddie L. T. Choy
  • Publication number: 20150024323
    Abstract: A process includes forming, by emulsion polymerization, polymer resin particles in a latex, the polymer resin particles being formed from a mixture including one or more monomer emulsions and a non-surfactant-based charge control agent, the emulsion polymerization is carried out with a solids content in a range from about 10 to about 30 percent by weight of the mixture, and forming toner particles from the polymer resin particles, the toner particles support a sufficient triboelectric charge for use under A-zone environmental conditions in a single-component development system.
    Type: Application
    Filed: July 16, 2013
    Publication date: January 22, 2015
    Inventors: KAREN MOFFAT, SHIGANG STEVEN QIU, SAMIR KUMAR, ROBERT D. BAYLEY, GRAZYNA E. KMIECIK-LAWRYNOWICZ, MAURA A. SWEENEY
  • Publication number: 20150004536
    Abstract: A toner composition with a novel surface additive package for developing images is provided. The additive package comprises a sol-gel silica, a PDMS silica, an HMDS silica, and an organic spacer such as PMMA, and melamine. The toner composition exhibits improved properties and are useful for high speed printing on Single Component Development systems.
    Type: Application
    Filed: June 28, 2013
    Publication date: January 1, 2015
    Inventors: GRAZYNA E. KMIECIK-LAWRYNOWICZ, MAURA A. SWEENEY, DANIEL W. ASARESE, SAMIR KUMAR
  • Publication number: 20140370430
    Abstract: A toner particle includes a core containing a styrene-based resin; a low melting point wax; optionally an additive package; and optionally a colorant, wherein the low melting point wax has a melting point of less than about 80° C. A method of making a toner particle includes forming a slimy by mixing together an emulsion containing a resin, a low melting point wax, optionally a colorant, optionally a surfactant, optionally a coagulant, and one or more additional optional additives; and heating the slurry to form aggregated particles in the slurry, wherein the aggregated particles form a core of the toner particles; and the low melting point wax has a melting point of less than about 80° C.
    Type: Application
    Filed: June 13, 2013
    Publication date: December 18, 2014
    Inventors: Grazyna E. KMIECIK-LAWRYNOWICZ, Samir KUMAR, Robert D. BAYLEY, Maura A. SWEENEY
  • Publication number: 20140363212
    Abstract: A cleaning blade lubricant including an acicular shape lubricant is provided. The cleaning blade lubricant is applied to a cleaning blade of an electrophotographic printing device for improving the cleaning performance of a cleaning blade of an electrophotographic printing device.
    Type: Application
    Filed: June 7, 2013
    Publication date: December 11, 2014
    Inventors: Michael F. Zona, Juan A. Morales-Tirado, Samir Kumar
  • Publication number: 20140349229
    Abstract: A toner composition includes a resin, optionally a wax, a colorant, and an acicular surface additive. The toner composition is suitable for use in a single component development system and which composition possesses excellent charging, stability, and flow characteristics.
    Type: Application
    Filed: May 23, 2013
    Publication date: November 27, 2014
    Inventors: JUAN A. MORALES-TIRADO, SAMIR KUMAR, MIKE ZONA
  • Publication number: 20140315127
    Abstract: Emulsion aggregation toner comprising: a resin; a wax; a colorant; an encapsulating shell; and a silica external additive comprising: first silica particles comprising fumed silica particles surface treated with octyldimethylsiloxane and having average particle diameter about 6-20 nm, present in amount of about 0.1-1% by weight of the toner; second silica particles comprising colloidal silica particles surface treated with hexamethyldisiloxane and having average particle diameter about 80-200 nm, present in amount of about 1-2% by weight of the toner; third silica particles comprising fumed silica particles surface treated with polydimethylsiloxane and having average particle diameter about 25-65 nm, present in amount of from about 0.5-1.5% by weight of the toner; and fourth silica particles comprising fumed silica particles surface treated with hexamethyldisiloxane and having average particle diameter about 25-65 nm, present in amount of about 1-2.5% by weight of the toner.
    Type: Application
    Filed: April 17, 2013
    Publication date: October 23, 2014
    Applicant: Xerox Corporation
    Inventors: Grazyna E. Kmiecik-Lawrynowicz, Maura A. Sweeney, Samir Kumar, Daniel W. Asarese
  • Patent number: 8725520
    Abstract: Power savings in a mobile device is accomplished by generating audio samples by decoding a bitstream with a decoding system within the mobile device. The generated audio samples are transferred into at least one memory bank in a set of memory banks in a power saver block within the mobile device. Parts of the decoding system not involved in the storing of the generated audio samples are switched off after batch decoding a bitstream associated with multiple audio frames. The bitstream includes bits less than that found in one audio file. At least one of the memory banks in the set of memory banks is power collapsible. The fetching of the decoded by the decoding system can be synchronized with a paging channel of a modem in the mobile device. The transferred audio samples is a lossless compression and may occur after a re-encoding.
    Type: Grant
    Filed: September 4, 2008
    Date of Patent: May 13, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Heejong Yoo, Nidish Ramachandra Kamath, Eddie L. T. Choy, Johnny K John, Samir Kumar Gupta
  • Patent number: 8718528
    Abstract: Various embodiments provide materials, apparatus, and methods for forming an image. Exemplary imaging apparatus can include one or more light sources configured to treat toner images after they are transferred on an image receiving substrate (e.g., a copy sheet). The toner images can be formed of an opto-thermal toner containing opto-thermal elements in a toner composition. The fuser subsystem may or may not be configured in the disclosed imaging apparatus.
    Type: Grant
    Filed: January 17, 2012
    Date of Patent: May 6, 2014
    Assignee: Xerox Corporation
    Inventors: Yuanjia Zhang, Mandakini Kanungo, Samir Kumar, Faming Li
  • Patent number: 8691485
    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: Grant
    Filed: October 8, 2009
    Date of Patent: April 8, 2014
    Assignee: Xerox Corporation
    Inventors: Daniel W. Asarese, Grazyna E. Kmiecik-Lawrynowicz, Samir Kumar, Maura A. Sweeney, Siddhesh N. Pawar, Robert D. Bayley
  • Patent number: 8660280
    Abstract: In accordance with a method for providing a distinct perceptual location for an audio source within an audio mixture, a foreground signal may be processed to provide a foreground perceptual angle for the foreground signal. The foreground signal may also be processed to provide a desired attenuation level for the foreground signal. A background signal may be processed to provide a background perceptual angle for the background signal. The background signal may also be processed to provide a desired attenuation level for the background signal. The foreground signal and the background signal may be combined into an output audio source.
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: February 25, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Pei Xiang, Samir Kumar Gupta, Eddie L. T. Choy, Prajakt V. Kulkarni
  • Publication number: 20140053261
    Abstract: Methods, systems and devices for generating data models in a client-cloud communication system may include applying machine learning techniques to generate a first family of classifier models that describe a cloud corpus of behavior vectors. Such vectors may be analyzed to identify factors in the first family of classifier models that have the highest probability of enabling a mobile device to better determine whether a mobile device behavior is malicious or benign. Based on this analysis, a second family of classifier models may be generated that identify significantly fewer factors and data points as being relevant for enabling the mobile device to better determine whether the mobile device behavior is malicious or benign based on the determined factors. A mobile device classifier module based on the second family of classifier models may be generated and made available for download by mobile devices, including devices contributing behavior vectors.
    Type: Application
    Filed: July 9, 2013
    Publication date: February 20, 2014
    Inventors: Rajarshi GUPTA, Mark Bapst, Mohammad H Reshadi, Samir Kumar
  • Patent number: 8650238
    Abstract: In a digital system with more than one clock source, lack of synchronization between the clock sources may cause overflow or underflow in sample buffers, also called sample slipping. Sample slipping may lead to undesirable artifacts in the processed signal due to discontinuities introduced by the addition or removal of extra samples. To smooth out discontinuities caused by sample slipping, samples are filtered to when a buffer overflow condition occurs, and the samples are interpolated to produce additional samples when a buffer underflow condition occurs. The interpolated samples may also be filtered. The filtering and interpolation operations can be readily implemented without adding significant burden to the computational complexity of a real-time digital system.
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: February 11, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Dinesh Ramakrishnan, Song Wang, Eddie L. T. Choy, Samir Kumar Gupta
  • Patent number: 8620644
    Abstract: Encoder-assisted frame loss concealment (FLC) techniques for decoding audio signals are described. A decoder may discard an erroneous frame of an audio signal and may implement the encoder-assisted FLC techniques in order to accurately conceal the discarded frame based on neighboring frames and side-information transmitted from the encoder. The encoder-assisted FLC techniques include estimating magnitudes of frequency-domain data for the frame based on frequency-domain data of neighboring frames, and estimating signs of the frequency-domain data based on a subset of signs transmitted from the encoder as side-information. Frequency-domain data for a frame of an audio signal includes tonal components and noise components. Signs estimated from a random signal may be substantially accurate for the noise components of the frequency-domain data.
    Type: Grant
    Filed: May 10, 2006
    Date of Patent: December 31, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Sang-Uk Ryu, Eddie L. T. Choy, Samir Kumar Gupta
  • Publication number: 20130345142
    Abstract: This document relates to methods and materials for detecting mutations that can be linked to dementia. For example, methods and materials for detecting one or more mutations within PGRN nucleic acid are provided. This document also provides methods and materials for detecting the level of progranulin expression. In addition, this document relates to methods and materials for treating mammals having a neurodegenerative disorder (e.g., dementia). For example, methods and materials for increasing PGRN polypeptide levels in mammals are provided, as are methods and materials for identifying agents that can be used to increase PGRN polypeptide levels in mammals.
    Type: Application
    Filed: July 1, 2013
    Publication date: December 26, 2013
    Applicants: Mayo Foundation for Medical Education and Research, Vib VZW, The University of Manchester, The University of British Columbia, Universiteit Antwerpen
    Inventors: Michael L. Hutton, Matthew Charles Baker, Jennifer Mae Gass, Rosa Rademakers, Jason Eriksen, Stuart M. Pickering-Brown, Ian Reid Alexander Mackenzie, Howard Feldman, Samir Kumar-Singh, Christine Van Broeckhoven, Marc Cruts, Ashley Diane Cannon
  • Patent number: 8592115
    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: Grant
    Filed: November 24, 2010
    Date of Patent: November 26, 2013
    Assignee: 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: 8532714
    Abstract: An executable is downloaded to an audio output device over a communications link. The executable may configure the audio output device to decode audio encoded in a specified format. The executable may also or alternatively include other audio processing software. The audio may include voice and/or audio playback, e.g., music playback. The ability to download an audio executable allows dynamic provisioning of various decoding and/or audio process capabilities to an audio output device. This may eliminate the need to transcode digitized audio for playback at the audio output device, and may also allow the audio output device to decode multiple audio formats without having multiple audio decoders permanently residing within the audio output device.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: September 10, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Kuntal Dilipsinh Sampat, Samir Kumar Gupta, Eddie L. T. Choy, Joel Linsky
  • Patent number: 8527325
    Abstract: Various embodiments of a system and method for allocating labor to units processed in a materials handling facility are described. Embodiments may include a labor allocation system configured to receive information associated with a materials handling process that includes handling multiple units. For each unit, such information may indicate a respective pre-handling time period and a respective post-handling time period. The labor allocation system may determine a measure of variability of the pre-handling time periods associated with the units. The labor allocation system may also determine a measure of variability of the post-handling time periods. In response to determining that one of the measures of variability is less than the other, the labor allocation system may determine that each time period associated with the lesser measure of variability is representative of a quantity of labor expended to process a respective unit in accordance with the materials handling process.
    Type: Grant
    Filed: November 23, 2009
    Date of Patent: September 3, 2013
    Assignee: Amazon Technologies, Inc.
    Inventors: Ranganath Atreya, Sujeevan Rajayogam, Matthew S. Dingfield, Kinsley O. Ogunmola, Jai Modi, Babitha Achutha, Robert D. McDonald, Jr., Samir Kumar, Eric Young
  • Patent number: 8515106
    Abstract: A method for providing an interface to a processing engine that utilizes intelligent audio mixing techniques may include receiving a request to change a perceptual location of an audio source within an audio mixture from a current perceptual location relative to a listener to a new perceptual location relative to the listener. The audio mixture may include at least two audio sources. The method may also include generating one or more control signals that are configured to cause the processing engine to change the perceptual location of the audio source from the current perceptual location to the new perceptual location via separate foreground processing and background processing. The method may also include providing the one or more control signals to the processing engine.
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: August 20, 2013
    Assignee: QUALCOMM Incorporated
    Inventors: Pei Xiang, Samir Kumar Gupta, Eddie L. T. Choy, Prajakt V. Kulkarni