Patents by Inventor Naveen Tiwari

Naveen Tiwari 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: 20140102358
    Abstract: An apparatus, die, and method can be used form a ribbon from a melt, where capillaries are relatively short and spacers are relatively long as compared to a die opening. Such a configuration can cause the melt to flow is a transverse direction that is substantially parallel to the solid/liquid interface to help move impurities to desired locations. In a particular embodiment, a crystal ribbon can be formed where defects, such as microvoids and impurities, are at higher concentrations near outer edges of the crystal ribbon. The outer edges can be removed to produce crystal substrates that are substantially free of microvoids and have no or a relatively low concentration of impurities. In another particular embodiment, the transverse flow can also help to increase the crystal growth rate.
    Type: Application
    Filed: September 30, 2013
    Publication date: April 17, 2014
    Inventors: Jan J. Buzniak, Naveen Tiwari, Vignesh Rajamani, Charles Gasdaska, Christopher D. Jones, Guilford L. Mack, III, Fery Pranadi, Maureen DeLoffi, Martin Z. Bazant
  • Patent number: 7332978
    Abstract: A glitch free controlled ring oscillator may comprise a programmable delay chain connected to a gating and inverter stage or means. A latch or latching means may be provided between the delay chain and the gating and inverter stage or means for registering the clock state at the time of disabling the oscillator and setting the output of the oscillator to the registered clock state.
    Type: Grant
    Filed: December 16, 2005
    Date of Patent: February 19, 2008
    Assignee: STMicroelectronics Pvt Ltd.
    Inventors: Naveen Tiwari, Balwant Singh
  • Patent number: 7185239
    Abstract: An on-chip timing measurement circuit for improving skew measurement and timing parameter characterization in integrated logic circuits providing increased accuracy and range. The measurement circuit includes a chip delay element characterization circuit for determining chip specific delay values having one output connected to a second control input of the programmable delay generator and receiving an output from the programmable delay generator for providing a value corresponding to the measured chip specific delay element timing, the characterization circuit being enabled by a control signal from the analyzer during a setup phase of the measurement cycle thereby enhancing the accuracy of the measurement for both skew measurement and timing parameter characterization.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: February 27, 2007
    Assignee: STMicroelectronics Pvt. Ltd.
    Inventor: Naveen Tiwari
  • Publication number: 20060132246
    Abstract: A glitch free controlled ring oscillator may comprise a programmable delay chain connected to a gating and inverter stage or means. A latch or latching means may be provided between the delay chain and the gating and inverter stage or means for registering the clock state at the time of disabling the oscillator and setting the output of the oscillator to the registered clock state.
    Type: Application
    Filed: December 16, 2005
    Publication date: June 22, 2006
    Applicant: STMicroelectronics Pvt. Ltd.
    Inventors: Naveen Tiwari, Balwant Singh
  • Publication number: 20050149778
    Abstract: An on-chip timing measurement circuit for improving skew measurement and timing parameter characterization in integrated logic circuits providing increased accuracy and range. The measurement circuit includes a chip delay element characterization circuit for determining chip specific delay values having one output connected to a second control input of the programmable delay generator and receiving an output from the programmable delay generator for providing a value corresponding to the measured chip specific delay element timing, the characterization circuit being enabled by a control signal from the analyzer during a setup phase of the measurement cycle thereby enhancing the accuracy of the measurement for both skew measurement and timing parameter characterization.
    Type: Application
    Filed: September 29, 2004
    Publication date: July 7, 2005
    Applicant: STMicroelectronics Pvt. Ltd.
    Inventor: Naveen Tiwari