Patents by Inventor Pallavi DHAGAT

Pallavi DHAGAT 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).

  • Integrated Acoustic Devices
    Publication number: 20230387877
    Abstract: Method for forming an integrated acoustic device. A thin film piezoelectric acoustic transducer is epitaxially formed on a host substrate and is then transferred to a functional target substrate wherein physical phenomena from the piezoelectric transducer and the arbitrary functional substrate interact to form a hybrid acoustic microsystem comprising the piezoelectric transducer and the arbitrary functional substrate.
    Type: Application
    Filed: May 11, 2023
    Publication date: November 30, 2023
    Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Vikrant J. GOKHALE, Brian P. DOWNEY, Shawn C. MACK, D. Scott KATZER, David J. MEYER, Pallavi DHAGAT, Albrecht JANDER
  • Magnetic data storage using induced strain of a magnetostrictive material
    Patent number: 9489973
    Abstract: Acoustically assisted magnetic recording can be used in a hard disk drive or a solid state medium. In the described embodiments, otherwise unwriteable high-coercivity media are made amenable to recording by lowering their coercivity via strain induced by acoustic waves. The use of acoustic waves temporarily and locally reduces the magnetic field required to record information on a magnetic recording medium. The process makes use of the magnetostrictive property of a magnetic material by which the magnetic anisotropy of the material is changed by strain. The result of such a change is a reduction in the coercive field, i.e., the magnetic field required to reverse the magnetization direction. Because acoustic waves cause strain, the passage of an acoustic wave through a magnetic material can be used to reduce its coercive field.
    Type: Grant
    Filed: February 13, 2014
    Date of Patent: November 8, 2016
    Assignee: Oregon State University
    Inventors: Pallavi Dhagat-Jander, Albrecht Jander
  • MAGNETIC DATA STORAGE USING INDUCED STRAIN OF A MAGNETOSTRICTIVE MATERIAL
    Publication number: 20150380038
    Abstract: Acoustically assisted magnetic recording can be used in a hard disk drive or a solid state medium. In the described embodiments, otherwise unwriteable high-coercivity media are made amenable to recording by lowering their coercivity via strain induced by acoustic waves. The use of acoustic waves temporarily and locally reduces the magnetic field required to record information on a magnetic recording medium. The process makes use of the magnetostrictive property of a magnetic material by which the magnetic anisotropy of the material is changed by strain. The result of such a change is a reduction in the coercive field, i.e., the magnetic field required to reverse the magnetization direction. Because acoustic waves cause strain, the passage of an acoustic wave through a magnetic material can be used to reduce its coercive field.
    Type: Application
    Filed: February 13, 2014
    Publication date: December 31, 2015
    Applicant: Oregon State University
    Inventors: Pallavi DHAGAT-JANDER, Albrecht JANDER