Patents by Inventor Srinivas Achanta

Srinivas Achanta 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: 20190218243
    Abstract: The present disclosure provides procedures and intermediates for the preparation of Sofosbuvir, comprising the step of reacting a compound of formula 2: wherein R1 and R2 can independently be hydrogen or halogen, provided that at least one of R1 and R2 is a halogen.
    Type: Application
    Filed: June 2, 2016
    Publication date: July 18, 2019
    Inventors: Vinod Kumar KANSAL, Dhirenkumar Natvarial MISTRY, Srinivas ACHANTA, Sundaraselvan ARIYAMUTHU, Miteshgir Kanchangir GOSWAMI, Venkata Subbarao YAZALI
  • Publication number: 20180238956
    Abstract: A fixed latency configurable tap or fixed-tap digital filter may filter a signal in a fixed amount of time, regardless of the number of taps. The filter may include one or more of a clock, a plurality of registers in a shift register, an adder, an accumulator, and/or a scaler. In at least one embodiment, a running average may be maintained as samples are received such that the latency remains fixed with a constant number of clock cycles.
    Type: Application
    Filed: February 17, 2017
    Publication date: August 23, 2018
    Applicant: Schweitzer Engineering Laboratories, Inc.
    Inventor: Srinivas Achanta
  • Patent number: 9813173
    Abstract: The time signal verification and distribution device disclosed herein verifies and distributes a time signal to consuming devices. The device determines a time quality status of a first and second time signal, calculates a difference between a first and a second time signal, and compares the difference to a predetermined threshold. Based on the time quality status and the comparison, the time signal verification and distribution device distributes a time signal to a plurality of time signal consuming devices. Exceeding the predetermined threshold may indicate a spoofing attack or other problem with the time signals.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: November 7, 2017
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Shankar V. Achanta, Srinivas Achanta, David E. Whitehead
  • Patent number: 9319100
    Abstract: The present application discloses a time distribution device capable of providing a synchronized time signal to a plurality of end devices connected to the time distribution device with cables of various lengths. The time distribution device may receive a time signal, generate a time reference based on the received time signal, compensate the time reference for hardware delay, and overcompensate the time reference for a delay caused by a maximum cable length. Prior to being distributed to various end devices, each being connected with the time distribution device by cables of varying length, this overcompensated time reference may then be delayed by an amount based on the cable length connecting each respective end device such that the arrival of each of the synchronized time references at the various end devices is synchronized.
    Type: Grant
    Filed: August 12, 2013
    Date of Patent: April 19, 2016
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Srinivas Achanta, Hidayatullah Ahsan
  • Publication number: 20160099803
    Abstract: The time signal verification and distribution device disclosed herein verifies and distributes a time signal to consuming devices. The device determines a time quality status of a first and second time signal, calculates a difference between a first and a second time signal, and compares the difference to a predetermined threshold. Based on the time quality status and the comparison, the time signal verification and distribution device distributes a time signal to a plurality of time signal consuming devices. Exceeding the predetermined threshold may indicate a spoofing attack or other problem with the time signals.
    Type: Application
    Filed: October 5, 2015
    Publication date: April 7, 2016
    Inventors: Shankar V. Achanta, Srinivas Achanta, David E. Whitehead
  • Patent number: 9300591
    Abstract: Disclosed is a network communication switch that facilitates reliable communication of high priority traffic over lower priority traffic across all ingress and egress ports. The network communication switch may monitor the frame storage buffer regardless of egress port, and when the frame storage buffer reaches a predetermined level, the switch may discard lower priority frames from the most congested port. When the frame storage buffer reaches a second predetermined level, the switch may discard lower priority frames before they are stored according to egress port. The network communication switch may further monitor ingress frames for priority, and assign priority to frames according to pre-assigned priority, ingress port, and/or frame contents.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: March 29, 2016
    Assignee: SCHWEITZER ENGINEERING LABORATORIES, INC.
    Inventors: Manodev J. Rajasekaran, David M. Rector, Damian Sanchez Moreno, M. Wesley Kunzler, Srinivas Achanta, Jerry J. Bennett, Ian C. Ender
  • Patent number: 9270442
    Abstract: Disclosed herein are a variety of systems and methods for correcting for propagation delay in time signals used in connection with an electric power generation and delivery system. According to various embodiments, a device consistent with the present disclosure may determine an estimated propagation delay between an accurate time source and a receiving device. The propagation delay may be determined based on a variety of transmission parameters including, for example, communication channel type and/or length. A corrected time signal may be generated by advancing a reference incitation such as an “on-time” reference and/or “start-of-second” reference included in the time signal by an amount associated with the propagation delay. The corrected time signal may then be transmitted to the receiving device.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: February 23, 2016
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Raymond W. Rice, Srinivas Achanta
  • Publication number: 20150312023
    Abstract: Disclosed herein are a variety of systems and methods for correcting for propagation delay in time signals used in connection with an electric power generation and delivery system. According to various embodiments, a device consistent with the present disclosure may determine an estimated propagation delay between an accurate time source and a receiving device. The propagation delay may be determined based on a variety of transmission parameters including, for example, communication channel type and/or length. A corrected time signal may be generated by advancing a reference incitation such as an “on-time” reference and/or “start-of-second” reference included in the time signal by an amount associated with the propagation delay. The corrected time signal may then be transmitted to the receiving device.
    Type: Application
    Filed: April 29, 2014
    Publication date: October 29, 2015
    Applicant: Schweitzer Engineering Laboratories, Inc.
    Inventors: Raymond W. Rice, Srinivas Achanta
  • Publication number: 20150043697
    Abstract: The present application discloses a time distribution device capable of providing a synchronized time signal to a plurality of end devices connected to the time distribution device with cables of various lengths. The time distribution device may receive a time signal, generate a time reference based on the received time signal, compensate the time reference for hardware delay, and overcompensate the time reference for a delay caused by a maximum cable length. Prior to being distributed to various end devices, each being connected with the time distribution device by cables of varying length, this overcompensated time reference may then be delayed by an amount based on the cable length connecting each respective end device such that the arrival of each of the synchronized time references at the various end devices is synchronized.
    Type: Application
    Filed: August 12, 2013
    Publication date: February 12, 2015
    Applicant: Schweitzer Engineering Laboratories, Inc.
    Inventors: Srinivas Achanta, Hidayatullah Ahsan
  • Publication number: 20140211624
    Abstract: Disclosed is a network communication switch that facilitates reliable communication of high priority traffic over lower priority traffic across all ingress and egress ports. The network communication switch may monitor the frame storage buffer regardless of egress port, and when the frame storage buffer reaches a predetermined level, the switch may discard lower priority frames from the most congested port. When the frame storage buffer reaches a second predetermined level, the switch may discard lower priority frames before they are stored according to egress port. The network communication switch may further monitor ingress frames for priority, and assign priority to frames according to pre-assigned priority, ingress port, and/or frame contents.
    Type: Application
    Filed: December 2, 2013
    Publication date: July 31, 2014
    Applicant: SCHWEITZER ENGINEERING LABORATORIES, INC.
    Inventors: Manodev J. Rajasekaran, David M. Rector, Damian Sanchez Moreno, M. Wesley Kunzler, Srinivas Achanta, Jerry J. Bennett, Ian C. Ender
  • Patent number: 6856861
    Abstract: Methods and apparatus are provided for customizing the cosmetics used by a consumer. A consumer provides selection data and a cosmetic product formula is generated therefrom, base ingredients are then dispensed in accordance with the formula and a customized cosmetic product is delivered onto an intermediate surface for subsequent application. Further, a cartridge providing fluids to a customized cosmetic device is disclosed comprising one or more fluids, the fluids are stored in the cartridge, and one or more openings are provided for dispensing the fluids to a customized cosmetic product.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: February 15, 2005
    Assignee: The Procter & Gamble Company
    Inventors: Robert S. Dirksing, Srinivas Achanta
  • Patent number: 6706298
    Abstract: A method for preparing dehydrated fruits, vegetables and tubers, particularly potato products. The steps of the method include: boiling the whole raw edible product or slices or pieces of the raw edible product for a time sufficient to partially cook the starch and soften the tissue of the edible product; comminuting the cooked product; and drying the comminuted product. The raw edible product is preferably unpeeled or partially peeled.
    Type: Grant
    Filed: April 20, 2000
    Date of Patent: March 16, 2004
    Assignee: The Procter & Gamble Co.
    Inventors: Maria Dolores Martinez-Serna Villagran, Joan Carol Wooten, Eileen Marie Boyle, Jianjun Li, Donald Ray Patton, Srinivas Achanta
  • Patent number: 6696095
    Abstract: A method for preparing dehydrated fruits, vegetables and tubers, particularly potato products. The steps of the method include: boiling the whole raw edible product or slices or pieces of the raw edible product for a time sufficient to partially cook the starch and soften the tissue of the edible product; comminuting the cooked product; and drying the comminuted product.
    Type: Grant
    Filed: April 20, 2000
    Date of Patent: February 24, 2004
    Assignee: The Procter & Gamble Co.
    Inventors: Maria Dolores Martinez-Serna Villagren, Joan Carol Wooten, Eileen Marie Boyle, Jianjun Li, Donald Ray Patton, Srinivas Achanta
  • Patent number: 6627597
    Abstract: A process for producing a starting material in a granular form and in a nanoporous anhydrous state, a process for improving the water-solubility and controlled release characteristics of a detergent material, and a detergent composition are disclosed. In one aspect, a process for producing a starting material in a granular form and in a nanoporous anhydrous state includes obtaining a starting material in a form of a dispersion or solution in a sublimable solvent or mixtures of sublimable solvents, forming graded droplets by atomization, freezing the graded droplets in a freezing medium at a controlled freezing rate of a least 100° C. per second to form frozen droplets and drying the frozen droplets by vacuum sublimation to obtain freeze-dried granules of the starting material in a nanoporous anhydrous state. The starting material in dispersion or solution form has a viscosity suitable for atomization and formation of graded droplets.
    Type: Grant
    Filed: April 12, 2001
    Date of Patent: September 30, 2003
    Assignee: The Procter & Gamble Company
    Inventors: Srinivas Achanta, Paul Amaat France
  • Patent number: 6599547
    Abstract: A method for preparing dehydrated fruits, vegetables and tubers, particularly potato products. The steps of the method include: boiling the whole raw edible product or slices or pieces of the raw edible product for a time sufficient to partially cook the starch and soften the tissue of the edible product; comminuting the cooked product; and drying the comminuted product. The raw edible product is preferably unpeeled or partially peeled. The resulting dehydrated product: (1) retains more Vitamin C; (2) has a lighter color; (3) has a higher percent of free amylose; (4) has fewer broken cells; and (5) has fewer degradation products than a corresponding product produced by conventional methods.
    Type: Grant
    Filed: April 20, 2000
    Date of Patent: July 29, 2003
    Assignee: The Procter & Gamble Co.
    Inventors: Maria Dolores Martinez-Serna Villagran, Srinivas Achanta, Eileen Marie Boyle, Jianjun Li, Donald Ray Patton
  • Publication number: 20030069667
    Abstract: Methods and apparatus are provided for customizing the cosmetics used by a consumer. A consumer provides selection data and a cosmetic product formula is generated therefrom, base ingredients are then dispensed in accordance with the formula and a customized cosmetic product is delivered onto an intermediate surface for subsequent application. Further, a cartridge providing fluids to a customized cosmetic device is disclosed comprising one or more fluids, the fluids are stored in the cartridge, and one or more openings are provided for dispensing the fluids to a customized cosmetic product.
    Type: Application
    Filed: November 14, 2002
    Publication date: April 10, 2003
    Applicant: The Procter & Gamble Company
    Inventors: Robert S. Dirksing, Srinivas Achanta
  • Patent number: 6516245
    Abstract: Methods and apparatus are provided for customizing the cosmetics used by a consumer. A consumer provides selection data and a cosmetic product formula is generated therefrom, base ingredients are then dispensed in accordance with the formula and a customized cosmetic product is delivered onto an intermediate surface for subsequent application. Further, a cartridge providing fluids to a customized cosmetic device is disclosed comprising one or more fluids, the fluids are stored in the cartridge, and one or more openings are provided for dispensing the fluids to a customized cosmetic product.
    Type: Grant
    Filed: May 31, 2000
    Date of Patent: February 4, 2003
    Assignee: The Procter & Gamble Company
    Inventors: Robert S. Dirksing, Srinivas Achanta
  • Patent number: 6355606
    Abstract: A process for producing a low density detergent composition is provided. The process involves: (a) agglomerating a detergent surfactant paste or precursor thereof and dry starting detergent material in a first high speed mixer to obtain detergent agglomerates; (b) mixing the detergent agglomerates in a second high speed mixer to obtain built-up agglomerates; and (c) feeding the built-up agglomerates and a binder into a fluid bed dryer to form detergent agglomerates having a density in a range from about 300 g/l to about 550 g/l, the fluid bed dryer being operated at a Stokes Number of less than about 1, wherein Stokes Number=8&rgr;&ngr;d/9&mgr;, &rgr; is the apparent particle density of the built-up agglomerates, &ngr; is the excess velocity of the built-up agglomerates, d is the mean particle diameter of the built-up agglomerates and &mgr; is the viscosity of the binder.
    Type: Grant
    Filed: January 14, 2000
    Date of Patent: March 12, 2002
    Assignee: The Procter & Gamble Company
    Inventors: Srinivas Achanta, Wayne Edward Beimesch