Patents by Inventor Raj P. Pathak

Raj P. Pathak 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).

  • Localized multimodal electromechanical polymer transducers
    Patent number: 9183710
    Abstract: A localized multimodal haptic system includes one or more electromechanical polymer (EMP) transducers, each including an EMP layer, such as an electrostrictive polymer active layer. In some applications the EMP transducer may perform an actuator function or a sensor function, or both. The EMP polymer layer has a first surface and a second surface on which one or more electrodes are provided. The EMP layer of the EMP actuator may be 5 microns thick or less. The EMP transducers may provide local haptic response to a local a stimulus. In one application, a touch sensor may be associated with each EMP transducer, such that the haptic event at the touch sensor may be responded to by activating only the associated EMP transducer. Furthermore, the EMP transducer may act as its own touch sensor. A variety of haptic responses may be made available. The EMP transducers may be used in various other applications, such as providing complex surface morphology and audio speakers.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: November 10, 2015
    Assignee: Novasentis, Inc.
    Inventors: Brian C. Zellers, Shihai Zhang, Christophe Ramstein, Li Jiang, Raj P. Pathak, M. Fabrice Domingues Dos Santos
  • Haptic system with localized response
    Patent number: 9164586
    Abstract: A localized multimodal haptic system includes one or more electromechanical polymer (EMP) transducers, each including an EMP layer, such as an electrostrictive polymer active layer. In some applications the EMP transducer may perform an actuator function or a sensor function, or both. The EMP polymer layer has a first surface and a second surface on which one or more electrodes are provided. The EMP layer of the EMP actuator may be 5 microns thick or less. The EMP transducers may provide local haptic response to a local a stimulus. In one application, a touch sensor may be associated with each EMP transducer, such that the haptic event at the touch sensor may be responded to by activating only the associated EMP transducer. Furthermore, the EMP transducer may act as its own touch sensor. A variety of haptic responses may be made available. The EMP transducers may be used in various other applications, such as providing complex surface morphology and audio speakers.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: October 20, 2015
    Assignee: Novasentis, Inc.
    Inventors: Brian C. Zellers, Shihai Zhang, Christophe Ramstein, Raj P. Pathak, M. Fabrice Domingues Dos Santos
  • HAPTIC SYSTEM WITH LOCALIZED RESPONSE
    Publication number: 20140139328
    Abstract: A localized multimodal haptic system includes one or more electromechanical polymer (EMP) transducers, each including an EMP layer, such as an electrostrictive polymer active layer. In some applications the EMP transducer may perform an actuator function or a sensor function, or both. The EMP polymer layer has a first surface and a second surface on which one or more electrodes are provided. The EMP layer of the EMP actuator may be 5 microns thick or less. The EMP transducers may provide local haptic response to a local a stimulus. In one application, a touch sensor may be associated with each EMP transducer, such that the haptic event at the touch sensor may be responded to by activating only the associated EMP transducer. Furthermore, the EMP transducer may act as its own touch sensor. A variety of haptic responses may be made available. The EMP transducers may be used in various other applications, such as providing complex surface morphology and audio speakers.
    Type: Application
    Filed: November 21, 2012
    Publication date: May 22, 2014
    Applicant: Strategic Polymer Sciences, Inc.
    Inventors: Brian C. Zellers, Shihai Zhang, Christophe Ramstein, Raj P. Pathak
  • LOCALIZED MULTIMODAL ELECTROMECHANICAL POLYMER TRANSDUCERS
    Publication number: 20140035735
    Abstract: A localized multimodal haptic system includes one or more electromechanical polymer (EMP) transducers, each including an EMP layer, such as an electrostrictive polymer active layer. In some applications the EMP transducer may perform an actuator function or a sensor function, or both. The EMP polymer layer has a first surface and a second surface on which one or more electrodes are provided. The EMP layer of the EMP actuator may be 5 microns thick or less. The EMP transducers may provide local haptic response to a local a stimulus. In one application, a touch sensor may be associated with each EMP transducer, such that the haptic event at the touch sensor may be responded to by activating only the associated EMP transducer. Furthermore, the EMP transducer may act as its own touch sensor. A variety of haptic responses may be made available. The EMP transducers may be used in various other applications, such as providing complex surface morphology and audio speakers.
    Type: Application
    Filed: November 21, 2012
    Publication date: February 6, 2014
    Applicant: STRATEGIC POLYMER SCIENCES, INC.
    Inventors: Brian C. Zellers, Shihai Zhang, Christophe Ramstein, Li Jiang, Raj P. Pathak