Patents by Inventor Ramamurthy Chandhrasekhar

Ramamurthy Chandhrasekhar 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: 9179538
    Abstract: Electronic components on a substrate may be shielded using electromagnetic shielding structures. Insulating materials may be used to provide structural support and to help prevent electrical shorting between conductive materials and the components. The shielding structures may include compartments formed using metal fences that surround selected components or by injection molding plastic. The shielding structures may be formed using metal foil wrapped over the components and the substrate. Electronic components may be tested using test posts or traces to identify components that are faulty. The test posts or traces may be deposited on the substrate and may be used to convey test signals between test equipment and the components. After successful testing, the test posts may be permanently shielded. Alternatively, temporary shielding structures may be used to allow testing of individual components before an electronic device is fully assembled.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: November 3, 2015
    Assignee: Apple Inc.
    Inventors: James H. Foster, James W. Bilanski, Amir Salehi, Ramamurthy Chandhrasekhar, Nicholas Unger Webb
  • Patent number: 9030841
    Abstract: A low profile, space efficient circuit shield is disclosed. The shield includes top and bottom metal layers disposed on the top of and below an integrated circuit. In one embodiment the shield can include edge plating arranged to encircle the edges of the integrated circuit and couple the top and bottom metal layers together. In another embodiment, the shield can include through vias arranged to encircle the edges of the integrated circuit and couple the top and bottom metal layers together. In yet another embodiment, passive components can be disposed adjacent to the integrated circuit within the shield.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: May 12, 2015
    Assignee: Apple Inc.
    Inventors: Shawn X. Arnold, Scott P. Mullins, Jeffrey M. Thoma, Ramamurthy Chandhrasekhar
  • Publication number: 20120320558
    Abstract: Electronic components on a substrate may be shielded using electromagnetic shielding structures. Insulating materials may be used to provide structural support and to help prevent electrical shorting between conductive materials and the components. The shielding structures may include compartments formed using metal fences that surround selected components or by injection molding plastic. The shielding structures may be formed using metal foil wrapped over the components and the substrate. Electronic components may be tested using test posts or traces to identify components that are faulty. The test posts or traces may be deposited on the substrate and may be used to convey test signals between test equipment and the components. After successful testing, the test posts may be permanently shielded. Alternatively, temporary shielding structures may be used to allow testing of individual components before an electronic device is fully assembled.
    Type: Application
    Filed: June 4, 2012
    Publication date: December 20, 2012
    Inventors: James H. Foster, James W. Bilanski, Amir Salehi, Ramamurthy Chandhrasekhar, Nicholas Unger Webb