Patents by Inventor Venkatesh P. Ramachandra

Venkatesh P. Ramachandra 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: 11508654
    Abstract: A non-volatile storage apparatus comprises a non-volatile memory structure and a plurality of I/O pads in communication with the non-volatile memory structure. The I/O pads include a power I/O pad, a ground I/O pad and data/control I/O pads. The non-volatile storage apparatus further comprises one or more capacitors connected to the power I/O pad and the ground I/O pad. The one or more capacitors are positioned in one or more metal interconnect layers below the signal lines and/or above device capacitors on the top surface of the substrate.
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: November 22, 2022
    Assignee: SanDisk Technologies LLC
    Inventors: Luisa Lin, Mohan Dunga, Venkatesh P. Ramachandra, Peter Rabkin, Masaaki Higashitani
  • Patent number: 11444016
    Abstract: A non-volatile storage apparatus comprises a non-volatile memory structure and a plurality of I/O pads in communication with the non-volatile memory structure. The I/O pads include a power I/O pad, a ground I/O pad and data/control I/O pads. The non-volatile storage apparatus further comprises one or more capacitors connected to the power I/O pad and the ground I/O pad. The one or more capacitors are positioned in one or more metal interconnect layers below the signal lines and/or above device capacitors on the top surface of the substrate.
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: September 13, 2022
    Assignee: SanDisk Technologes LLC
    Inventors: Luisa Lin, Mohan Dunga, Venkatesh P. Ramachandra, Peter Rabkin, Masaaki Higashitani
  • Patent number: 10847452
    Abstract: A non-volatile storage apparatus comprises a non-volatile memory structure and a plurality of I/O pads in communication with the non-volatile memory structure. The I/O pads include a power I/O pad, a ground I/O pad and data/control I/O pads. The non-volatile storage apparatus further comprises one or more capacitors connected to the power I/O pad and the ground I/O pad. The one or more capacitors are positioned in one or more metal interconnect layers below the signal lines and/or above device capacitors on the top surface of the substrate.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: November 24, 2020
    Assignee: SANDISK TECHNOLOGIES LLC
    Inventors: Luisa Lin, Mohan Dunga, Venkatesh P. Ramachandra, Peter Rabkin, Masaaki Higashitani
  • Patent number: 10825827
    Abstract: A non-volatile storage apparatus comprises a non-volatile memory structure and an I/O interface. A portion of the memory die is used as a pool capacitor for the I/O interface.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: November 3, 2020
    Assignee: SANDISK TECHNOLOGIES LLC
    Inventors: Mohan Dunga, James Kai, Venkatesh P. Ramachandra, Piyush Dak, Luisa Lin, Masaaki Higashitani
  • Patent number: 10818685
    Abstract: A non-volatile storage apparatus comprises a non-volatile memory structure and an I/O interface. A portion of the memory die is used as a pool capacitor for the I/O interface.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: October 27, 2020
    Assignee: SANDISK TECHNOLOGIES LLC
    Inventors: Mohan Dunga, James Kai, Venkatesh P. Ramachandra, Piyush Dak, Luisa Lin, Masaaki Higashitani
  • Patent number: 10789992
    Abstract: A non-volatile storage apparatus comprises a non-volatile memory structure and a plurality of I/O pads in communication with the non-volatile memory structure. The I/O pads include a power I/O pad, a ground I/O pad and data/control I/O pads. The non-volatile storage apparatus further comprises one or more capacitors connected to the power I/O pad. The one or more capacitors are positioned in one or more metal interconnect layers below the I/O pads.
    Type: Grant
    Filed: October 23, 2018
    Date of Patent: September 29, 2020
    Assignee: SANDISK TECHNOLOGIES LLC
    Inventors: Luisa Lin, Mohan Dunga, Venkatesh P. Ramachandra, Peter Rabkin, Masaaki Higashitani
  • Publication number: 20200294909
    Abstract: A non-volatile storage apparatus comprises a non-volatile memory structure and a plurality of I/O pads in communication with the non-volatile memory structure. The I/O pads include a power I/O pad, a ground I/O pad and data/control I/O pads. The non-volatile storage apparatus further comprises one or more capacitors connected to the power I/O pad and the ground I/O pad. The one or more capacitors are positioned in one or more metal interconnect layers below the signal lines and/or above device capacitors on the top surface of the substrate.
    Type: Application
    Filed: May 28, 2020
    Publication date: September 17, 2020
    Applicant: SANDISK TECHNOLOGIES LLC
    Inventors: Luisa Lin, Mohan Dunga, Venkatesh P. Ramachandra, Peter Rabkin, Masaaki Higashitani
  • Publication number: 20200294910
    Abstract: A non-volatile storage apparatus comprises a non-volatile memory structure and a plurality of I/O pads in communication with the non-volatile memory structure. The I/O pads include a power I/O pad, a ground I/O pad and data/control I/O pads. The non-volatile storage apparatus further comprises one or more capacitors connected to the power I/O pad and the ground I/O pad. The one or more capacitors are positioned in one or more metal interconnect layers below the signal lines and/or above device capacitors on the top surface of the substrate.
    Type: Application
    Filed: May 28, 2020
    Publication date: September 17, 2020
    Applicant: SANDISK TECHNOLOGIES LLC
    Inventors: Luisa Lin, Mohan Dunga, Venkatesh P. Ramachandra, Peter Rabkin, Masaaki Higashitani
  • Publication number: 20200013795
    Abstract: A non-volatile storage apparatus comprises a non-volatile memory structure and an I/O interface. A portion of the memory die is used as a pool capacitor for the I/O interface.
    Type: Application
    Filed: September 25, 2018
    Publication date: January 9, 2020
    Applicant: SANDISK TECHNOLOGIES LLC
    Inventors: Mohan Dunga, James Kai, Venkatesh P. Ramachandra, Piyush Dak, Luisa Lin, Masaaki Higashitani
  • Publication number: 20200013794
    Abstract: A non-volatile storage apparatus comprises a non-volatile memory structure and an I/O interface. A portion of the memory die is used as a pool capacitor for the I/O interface.
    Type: Application
    Filed: September 25, 2018
    Publication date: January 9, 2020
    Applicant: SANDISK TECHNOLOGIES LLC
    Inventors: Mohan Dunga, James Kai, Venkatesh P. Ramachandra, Piyush Dak, Luisa Lin, Masaaki Higashitani
  • Publication number: 20200013434
    Abstract: A non-volatile storage apparatus comprises a non-volatile memory structure and a plurality of I/O pads in communication with the non-volatile memory structure. The I/O pads include a power I/O pad, a ground I/O pad and data/control I/O pads. The non-volatile storage apparatus further comprises one or more capacitors connected to the power I/O pad. The one or more capacitors are positioned in one or more metal interconnect layers below the I/O pads.
    Type: Application
    Filed: October 23, 2018
    Publication date: January 9, 2020
    Applicant: SANDISK TECHNOLOGIES LLC
    Inventors: Luisa Lin, Mohan Dunga, Venkatesh P. Ramachandra, Peter Rabkin, Masaaki Higashitani
  • Publication number: 20200013714
    Abstract: A non-volatile storage apparatus comprises a non-volatile memory structure and a plurality of I/O pads in communication with the non-volatile memory structure. The I/O pads include a power I/O pad, a ground I/O pad and data/control I/O pads. The non-volatile storage apparatus further comprises one or more capacitors connected to the power I/O pad and the ground I/O pad. The one or more capacitors are positioned in one or more metal interconnect layers below the signal lines and/or above device capacitors on the top surface of the substrate.
    Type: Application
    Filed: October 23, 2018
    Publication date: January 9, 2020
    Applicant: SANDISK TECHNOLOGIES LLC
    Inventors: Luisa Lin, Mohan Dunga, Venkatesh P. Ramachandra, Peter Rabkin, Masaaki Higashitani
  • Patent number: 10381327
    Abstract: A non-volatile storage system includes a plurality of memory dies and an interface circuit. Each memory die includes a wide I/O interface electrically coupled to another wide I/O interface of another memory die of the plurality of memory dies. The interface circuit is physically separate from the memory dies. The interface circuit includes a first interface and a second interface. The first interface comprises a wide I/O interface electrically coupled to a wide I/O interface of at least one of the memory dies of the plurality of memory dies. The second interface is a narrow I/O interface configured to communicate with an external circuit.
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: August 13, 2019
    Assignee: SanDisk Technologies LLC
    Inventors: Venkatesh P. Ramachandra, Michael Mostovoy, Hem Takiar, Gokul Kumar, Vinayak Ghatawade
  • Patent number: 10249592
    Abstract: A wide I/O semiconductor device is disclosed including a memory die stack wire bonded to an interface chip. The stack of memory die may be wire bonded to the interface chip using a wire bond scheme optimized for die-to-die connection and optimized for the large number of wire bond connections in a wide I/O semiconductor device. This method can achieve significant BW increase by improving packaging yield and costs, not possible with current packaging schemes.
    Type: Grant
    Filed: February 18, 2018
    Date of Patent: April 2, 2019
    Assignee: SanDisk Technologies LLC
    Inventors: Michael Mostovoy, Gokul Kumar, Ning Ye, Hem Takiar, Venkatesh P. Ramachandra, Vinayak Ghatawade, Chih-Chin Liao
  • Publication number: 20180174996
    Abstract: A wide I/O semiconductor device is disclosed including a memory die stack wire bonded to an interface chip. The stack of memory die may be wire bonded to the interface chip using a wire bond scheme optimized for die-to-die connection and optimized for the large number of wire bond connections in a wide I/O semiconductor device. This method can achieve significant BW increase by improving packaging yield and costs, not possible with current packaging schemes.
    Type: Application
    Filed: February 18, 2018
    Publication date: June 21, 2018
    Applicant: SANDISK TECHNOLOGIES LLC
    Inventors: Michael Mostovoy, Gokul Kumar, Ning Ye, Hem Takiar, Venkatesh P. Ramachandra, Vinayak Ghatawade, Chih-Chin Liao
  • Publication number: 20180102344
    Abstract: A non-volatile storage system includes a plurality of memory dies and an interface circuit. Each memory die includes a wide I/O interface electrically coupled to another wide I/O interface of another memory die of the plurality of memory dies. The interface circuit is physically separate from the memory dies. The interface circuit includes a first interface and a second interface. The first interface comprises a wide I/O interface electrically coupled to a wide I/O interface of at least one of the memory dies of the plurality of memory dies. The second interface is a narrow I/O interface configured to communicate with an external circuit.
    Type: Application
    Filed: October 6, 2016
    Publication date: April 12, 2018
    Applicant: SANDISK TECHNOLOGIES LLC
    Inventors: Venkatesh P. Ramachandra, Michael Mostovoy, Hem Takiar, Gokul Kumar, Vinayak Ghatawade
  • Patent number: 9899347
    Abstract: A wide I/O semiconductor device is disclosed including a memory die stack wire bonded to an interface chip. The stack of memory die may be wire bonded to the interface chip using a wire bond scheme optimized for die-to-die connection and optimized for the large number of wire bond connections in a wide I/O semiconductor device. This method can achieve significant BW increase by improving packaging yield and costs, not possible with current packaging schemes.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: February 20, 2018
    Assignee: SanDisk Technologies LLC
    Inventors: Michael Mostovoy, Gokul Kumar, Ning Ye, Hem Takiar, Venkatesh P. Ramachandra, Vinayak Ghatawade, Chih-Chin Liao