Patents by Inventor Manoj K. Bhattacharyya

Manoj K. Bhattacharyya 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: 20210072176
    Abstract: An electronic device can include a housing defining an internal volume and a pressure sensor assembly disposed in the internal volume and in communication with an ambient environment. The pressure sensor assembly can include a structure at least partially enclosing a sensor volume, a pressure sensor affixed to a die disposed in the sensor volume, and an exposed moisture detection conductor positioned in the sensor volume.
    Type: Application
    Filed: April 21, 2020
    Publication date: March 11, 2021
    Inventors: Caleb C. Han, Brad G. Boozer, David MacNeil, Gregory B. Arndt, Patrick E. O'Brien, Roham Solasi, Tongbi T. Jiang, Ashwin Balasubramanian, William S. Lee, Manoj K. Bhattacharyya, Jiahui Liang, James G. Horiuchi, Savas Gider
  • Patent number: 10859407
    Abstract: An integrated circuit (IC) chip including an array of asymmetrically distributed magnetic field sensing elements. Additionally, an integrated circuit (IC) chip includes a substrate, a sensing coil supported by the substrate and enclosing a portion of substrate, and a Hall effect sensor supported by the portion of the substrate enclosed by the sensing coil.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: December 8, 2020
    Assignee: Apple Inc.
    Inventors: Denis G. Chen, Arman Hajati, Manoj K. Bhattacharyya
  • Patent number: 10809317
    Abstract: In an embodiment, a method comprises: obtaining, by a sensing device on a ferromagnetic surface, a first magnetometer reading of magnetic flux density modified by the ferromagnetic surface in a first direction; obtaining, by the sensing device, a second magnetometer reading of magnetic flux density modified by the ferromagnetic surface in a second direction; obtaining, by the sensing device, sensitivity terms based on the first and second magnetometer readings; and storing, by the sensing device, the sensitivity terms and a location of the sensing device on the ferromagnetic surface.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: October 20, 2020
    Assignee: Apple Inc.
    Inventor: Manoj K. Bhattacharyya
  • Patent number: 10557724
    Abstract: An angular detection system including a magnet and sensors is disclosed. The magnet can be located on a rotating component and the sensors can be located on a stationary component, or vice versa. The magnet can generate a plurality of magnetic flux lines. The plurality of sensors can be located and spatially separated along the motion path of the magnet for detecting the magnetic flux densities. The strength of the magnetic flux lines sensed by a given sensor can be used to determine the location of the magnet along its motion path. The plurality of sensors can generate one or more signals indicative of the strength of the sensed magnetic field lines. Based on the strength of the magnetic flux lines, the location of the magnet, or both, the system can determine the angle of rotation of the device by using a polynomial function or a look-up table.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: February 11, 2020
    Assignee: Apple Inc.
    Inventors: Manoj K. Bhattacharyya, Daniel Ray Bloom, Rajesh Anantharaman
  • Publication number: 20200018622
    Abstract: An integrated circuit (IC) chip including an array of asymmetrically distributed magnetic field sensing elements. Additionally, an integrated circuit (IC) chip includes a substrate, a sensing coil supported by the substrate and enclosing a portion of substrate, and a Hall effect sensor supported by the portion of the substrate enclosed by the sensing coil.
    Type: Application
    Filed: September 24, 2019
    Publication date: January 16, 2020
    Inventors: Denis G. Chen, Arman Hajati, Manoj K. Bhattacharyya
  • Patent number: 10436607
    Abstract: An integrated circuit (IC) chip including an array of asymmetrically distributed magnetic field sensing elements. Additionally, an integrated circuit (IC) chip includes a substrate, a sensing coil supported by the substrate and enclosing a portion of substrate, and a Hall effect sensor supported by the portion of the substrate enclosed by the sensing coil.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: October 8, 2019
    Assignee: Apple Inc.
    Inventors: Denis G. Chen, Arman Hajati, Manoj K. Bhattacharyya
  • Patent number: 10168644
    Abstract: A digital-printing substrate and method of improving adhesion of a substrate to an liquid electrophotographic (LEP) ink in LEP printing both employ a composite coating. The composite coating includes from 4.5% to 9.5% by weight of a mineral pigment and from 0.5% to 2% by weight of an organic binder uniformly dispersed in water. The mineral pigment has a particle size less than 1 micron. The organic binder comprises a hydroxylated polymer having an average molecular weight greater than 50,000. A weight percentage of hydroxyl groups in the hydroxylated polymer is equal to or greater than a weight percentage of acidic groups in an LEP ink. The composite coating enhances adhesion of the LEP ink to the substrate comprising the composite coating dried on a surface of the substrate.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: January 1, 2019
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Manoj K. Bhattacharyya, Hou T. Ng
  • Publication number: 20180088186
    Abstract: In an embodiment, a method comprises: obtaining, by a sensing device on a ferromagnetic surface, a first magnetometer reading of magnetic flux density modified by the ferromagnetic surface in a first direction; obtaining, by the sensing device, a second magnetometer reading of magnetic flux density modified by the ferromagnetic surface in a second direction; obtaining, by the sensing device, sensitivity terms based on the first and second magnetometer readings; and storing, by the sensing device, the sensitivity terms and a location of the sensing device on the ferromagnetic surface.
    Type: Application
    Filed: August 31, 2017
    Publication date: March 29, 2018
    Applicant: Apple Inc.
    Inventor: Manoj K. Bhattacharyya
  • Publication number: 20180080800
    Abstract: An integrated circuit (IC) chip including an array of asymmetrically distributed magnetic field sensing elements. Additionally, an integrated circuit (IC) chip includes a substrate, a sensing coil supported by the substrate and enclosing a portion of substrate, and a Hall effect sensor supported by the portion of the substrate enclosed by the sensing coil.
    Type: Application
    Filed: August 10, 2017
    Publication date: March 22, 2018
    Inventors: Denis G. Chen, Arman Hajati, Manoj K. Bhattacharyya
  • Patent number: 9752877
    Abstract: An electronic device may be provided with an electronic compass. The electronic compass may include magnetic sensors. The magnetic sensors may include thin-film magnetic sensor elements such as giant magnetoresistance sensor elements. Magnetic flux concentrators may be used to guide magnetic fields through the sensor elements. To reduce offset in the electronic compass, the magnetic flux concentrators may be demagnetized by applying a current to a coil in the housing. The coil may be formed from loops of metal traces within a printed circuit or other loops of conductive paths. Magnetic flux concentrators may have ring shapes. A ring-shaped magnetic flux concentrator may be formed from multiple thin stacked layers of soft magnetic material separated by non-magnetic material.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: September 5, 2017
    Assignee: Apple Inc.
    Inventors: Manoj K Bhattacharyya, Christopher E. Balcells, Jian Guo, Peter G. Hartwell
  • Patent number: 9539822
    Abstract: A digital printing system includes components to apply an ink layer on a substrate, and a deinking applicator. The deinking applicator includes a reservoir and a roller. The reservoir is to contain a deinking solution. The roller is positioned to receive the deinking solution from the reservoir and to coat the substrate with the deinking solution prior to the application of the ink layer or subsequent to the application of the ink layer.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: January 10, 2017
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Manoj K Bhattacharyya, Hou T Ng, Laurie S Mittelstadt, Wenjia Zhang
  • Publication number: 20160313122
    Abstract: An electronic device may be provided with an electronic compass. The electronic compass may include magnetic sensors. The magnetic sensors may include thin-film magnetic sensor elements such as giant magnetoresistance sensor elements. Magnetic flux concentrators may be used to guide magnetic fields through the sensor elements. To reduce offset in the electronic compass, the magnetic flux concentrators may be demagnetized by applying a current to a coil in the housing. The coil may be formed from loops of metal traces within a printed circuit or other loops of conductive paths. Magnetic flux concentrators may have ring shapes. A ring-shaped magnetic flux concentrator may be formed from multiple thin stacked layers of soft magnetic material separated by non-magnetic material.
    Type: Application
    Filed: August 27, 2015
    Publication date: October 27, 2016
    Inventors: Manoj K Bhattacharyya, Christopher E. Balcells, Jian Guo, Peter G. Hartwell
  • Patent number: 9423709
    Abstract: Toner compositions for electrophotographic printing are disclosed, along with methods for making such toners, and printing systems utilizing them. The disclosed process imparts qualities to the toner making it more efficiently and effectively incorporated into printed images.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: August 23, 2016
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Sivapackia Ganapathiappan, Manoj K. Bhattacharyya, Hou T. Ng
  • Publication number: 20160085182
    Abstract: A digital-printing substrate and method of improving adhesion of a substrate to an liquid electrophotographic (LEP) ink in LEP printing both employ a composite coating. The composite coating includes from 4.5% to 9.5% by weight of a mineral pigment and from 0.5% to 2% by weight of an organic binder uniformly dispersed in water. The mineral pigment has a particle size less than 1 micron. The organic binder comprises a hydroxylated polymer having an average molecular weight greater than 50,000. A weight percentage of hydroxyl groups in the hydroxylated polymer is equal to or greater than a weight percentage of acidic groups in an LEP ink. The composite coating enhances adhesion of the LEP ink to the substrate comprising the composite coating dried on a surface of the substrate.
    Type: Application
    Filed: December 2, 2015
    Publication date: March 24, 2016
    Inventors: Manoj K. Bhattacharyya, Hou T. Ng
  • Publication number: 20150015655
    Abstract: A digital printing system includes components to apply an ink layer on a substrate, and a deinking applicator. The deinking applicator includes a reservoir and a roller. The reservoir is to contain a deinking solution. The roller is positioned to receive the deinking solution from the reservoir and to coat the substrate with the deinking solution prior to the application of the ink layer or subsequent to the application of the ink layer.
    Type: Application
    Filed: January 13, 2012
    Publication date: January 15, 2015
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Manoj K Bhattacharyya, Hou T. Ng, Laurie S Mittelstadt, Wenjia Zhang
  • Publication number: 20140238625
    Abstract: A recording medium includes a substrate, and a deinking agent incorporated in the substrate, on the substrate in a layer, or both in the substrate and on the substrate in a layer. The deinking agent is chosen from an unsaturated fatty acid having from 19 to 23 carbon atoms and combinations of these unsaturated fatty acids. The deinking agent interacts with an ink having been printed on the recording medium to remove the ink during a deinking process.
    Type: Application
    Filed: October 5, 2011
    Publication date: August 28, 2014
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Manoj K. Bhattacharyya, Hou T. Ng
  • Patent number: 8774682
    Abstract: Methods and devices for measuring conductivity of ink in a printing system are disclosed. An embodiment of the method is used with a printing system having a developer roller, wherein the ink is formed on the developer roller using electrostatic forces and is used to print on a substrate. A first current charges the developer roller during the printing. The first current is measured and the conductivity of the ink is determined, wherein the conductivity is proportional to the square of the first current.
    Type: Grant
    Filed: May 30, 2008
    Date of Patent: July 8, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Manoj K Bhattacharyya
  • Patent number: 8764894
    Abstract: An ink dispersion includes an ink vehicle and a colorant dispersed in the ink vehicle. The ink vehicle includes a non-ionic surfactant and a solvent. The non-ionic surfactant has an HLB value ranges from about 5 to about 16, and is chosen from: i) a material represented by one of the formulas R1—O—(OR2)n—H, R1—(OR2)n—OH or R1—C6H4—(OR2)n—OH, wherein: R1 is chosen from a) a linear or cyclic alkyl group including from 3 to 20 carbon atoms, or b) a substituted or non-substituted alkyl group including from 6 to 18 carbon atoms, R2 is chosen from CH2CH2 or CH2CH2CH2, and n is an integer chosen from 2 to 100; or ii) a diester having at least one ethylene oxide repeating unit; or iii) an octylphenol having at least one ethylene oxide repeating unit.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: July 1, 2014
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Hou T. Ng, Manoj K. Bhattacharyya, Howard S. Tom
  • Patent number: 8372494
    Abstract: An inkjet print medium includes a base substrate, a layer of a deinking solution at least partially diffused into the base substrate, and an ink-receiving layer established on the layer of the deinking solution. The deinking solution includes a flocculant in an amount ranging from about 0.1 wt. % to about 40 wt. % of a total wt. % of the deinking solution.
    Type: Grant
    Filed: October 29, 2009
    Date of Patent: February 12, 2013
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Laurie S. Mittelstadt, Manoj K. Bhattacharyya, Hou T. Ng
  • Publication number: 20130029111
    Abstract: A post-treatment composition for a digitally printed image includes a non-polar solvent and a non-ionic surfactant. The non-ionic surfactant is present in an amount ranging from about 0.5 wt % to about 20 wt % of a total weight of substrate used to form the digitally printed image. The post-treatment composition renders the digitally printed image deinkable.
    Type: Application
    Filed: July 29, 2011
    Publication date: January 31, 2013
    Inventors: Manoj K. Bhattacharyya, Hou T. Ng, Laurie S. Mittelstadt