Patents by Inventor Rahul Joshi

Rahul Joshi 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: 20190264951
    Abstract: A molten salt central receiver arrangement for transferring heat from panels to a molten salt that flows through the panels. A control device allows to change the condition of at least one of the panel arrangements of the molten salt central receiver arrangement depending on at least an operating parameter of at least one panel and/or depending on an environment signal that characterizes the actual or forecast available heat for the heat transfer to the molten salt. In normal operation passes, each having one or more panels, are connected in series such that molten salt flows in a serpentine or alternating way upward and downward through subsequent passes. In a parallel flow condition, molten salt may flow upward through all of the panels in parallel. In a drain condition, the molten salt is forced out of one or more panels and replaced by compressed air.
    Type: Application
    Filed: February 28, 2018
    Publication date: August 29, 2019
    Inventors: John David MCGRANE, Pedro Israel INIGO, Apurba Kumar DAS, Rahul Jayant TERDALKAR, Abhinaya JOSHI, Michael M. CLARK, Joseph W. QUINN, Gary PASHKO, Robert DEROSA
  • Patent number: 9973491
    Abstract: One embodiment of the present invention provides a system that facilitates determining an identity of a third-party user in a Security Assertion Markup Language (SAML) implementation of a web-service. During operation, the system receives an SAML token profile web service request from the third-party user at the web-service. The system also receives a digital certificate designated by the SAML token profile web service request from the third-party user at the web-service. Next, the system analyzes the digital certificate to identify a third-party associated with the third-party user. The system then determines if the third-party is a trusted party. Next, the system receives one or more attributes associated with the third-party user at the web-service. The system then uses the attributes to identify the third-party user. Finally, the system performs a lookup in a user map to determine a user account that is associated with the third-party user.
    Type: Grant
    Filed: May 16, 2008
    Date of Patent: May 15, 2018
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventors: Rahul Joshi, Wellen Lau
  • Publication number: 20170358132
    Abstract: An improved tessellation graphics pipeline that obviates that use of early stage vertex shaders and hull shaders and allows greater efficiency and flexibility. Embodiments provide a graphics pipeline beginning with a tessellator that may obtain tessellation factors in any manner such as reading from a memory of factors provided by a developer or computing the factors using a compute kernel. In some embodiments, a single vertex shader may follow the tessellator and perform all the necessary vertex shading for the pipeline. Furthermore, in some embodiments, a compute kernel is used to generate the tessellation factors. The compute kernel provides flexibility that allows its employment for some graphic portions and not others. In addition, the streamlined pipeline facilitates the efficient use of scaling to determine tessellation factors for the same graphic portion at different camera distances or desired levels of replication of the mathematical model.
    Type: Application
    Filed: September 23, 2016
    Publication date: December 14, 2017
    Inventors: Aaftab A. Munshi, Michael B. Harris, Anna Tikhonova, Charles Brissart, Srinivas Dasari, Rahul Joshi, Kelvin C. Chiu, Mon Ping Wang, Nick W. Burns
  • Patent number: 9478965
    Abstract: A cryogenic electrical power feed-through assembly includes a contact header assembly. The contact header assembly includes a feed-through body forming a feed-through body cavity disposed therethrough extending between a first opening end to a second opening end. A first contactor plate assembly is disposed at and hermetically seals the first opening end of the feed-through body with a first electron beam weld formed between the first contactor plate and the first opening end. A second contactor plate assembly is disposed at and hermetically seals the second opening end of the feed-through body with a second electron beam weld formed between the second contactor plate and the second opening end. Each contactor plate assembly includes a contactor plate, a plurality of insulative bushings hermetically sealed to and extending through the contactor plate, and a plurality of contact pins hermetically sealed to and extending through the plurality of insulative bushings.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: October 25, 2016
    Assignee: ACD, LLC
    Inventors: Dennis W. Chalmers, Mark Geipel, Rahul Joshi
  • Publication number: 20150305187
    Abstract: A cryogenic electrical power feed-through assembly includes a contact header assembly. The contact header assembly includes a feed-through body forming a feed-through body cavity disposed therethrough extending between a first opening end to a second opening end. A first contactor plate assembly is disposed at and hermetically seals the first opening end of the feed-through body with a first electron beam weld formed between the first contactor plate and the first opening end. A second contactor plate assembly is disposed at and hermetically seals the second opening end of the feed-through body with a second electron beam weld formed between the second contactor plate and the second opening end. Each contactor plate assembly includes a contactor plate, a plurality of insulative bushings hermetically sealed to and extending through the contactor plate, and a plurality of contact pins hermetically sealed to and extending through the plurality of insulative bushings.
    Type: Application
    Filed: April 17, 2015
    Publication date: October 22, 2015
    Inventors: Dennis W. Chalmers, Mark Geipel, Rahul Joshi
  • Publication number: 20090288155
    Abstract: One embodiment of the present invention provides a system that facilitates determining an identity of a third-party user in a Security Assertion Markup Language (SAML) implementation of a web-service. During operation, the system receives an SAML token profile web service request from the third-party user at the web-service. The system also receives a digital certificate designated by the SAML token profile web service request from the third-party user at the web-service. Next, the system analyzes the digital certificate to identify a third-party associated with the third-party user. The system then determines if the third-party is a trusted party. Next, the system receives one or more attributes associated with the third-party user at the web-service. The system then uses the attributes to identify the third-party user. Finally, the system performs a lookup in a user map to determine a user account that is associated with the third-party user.
    Type: Application
    Filed: May 16, 2008
    Publication date: November 19, 2009
    Applicant: ORACLE INTERNATIONAL CORPORATION
    Inventors: Rahul Joshi, Wellen Lau
  • Patent number: 7407213
    Abstract: A vehicle tailgate lift assist support structure is provided with a rear end structure, a tailgate pivotally coupled to the rear end structure, and a lift assist device connected between the rear end structure and the tailgate. The rear end structure includes a first wall, a hinge plate having a plate portion disposed on an inboard side of the first wall portion and a pivot bearing sleeve extending from the plate portion through an opening of the first wall, and a nut plate disposed on an outboard side of the first wall and coupled to the hinge plate. A bellcrank arm is provided that has a first end attached to the tailgate and a second end offset from a tailgate pivot axis. The first end extends through the pivot bearing sleeve. The lift assist device dampens the tailgate during opening and applies a closing torque to the tailgate during closing.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: August 5, 2008
    Assignee: Nissan Technical Center North America, Inc.
    Inventors: Richard Eschebach, William Bowes, Nandkumar Rangnekar, Rahul Joshi, Robert Gaines
  • Publication number: 20080054669
    Abstract: A vehicle tailgate lift assist support structure is provided with a rear end structure, a tailgate pivotally coupled to the rear end structure, and a lift assist device connected between the rear end structure and the tailgate. The rear end structure includes a first wall, a hinge plate having a plate portion disposed on an inboard side of the first wall portion and a pivot bearing sleeve extending from the plate portion through an opening of the first wall, and a nut plate disposed on an outboard side of the first wall and coupled to the hinge plate. A bellcrank arm is provided that has a first end attached to the tailgate and a second end offset from a tailgate pivot axis. The first end extends through the pivot bearing sleeve. The lift assist device dampens the tailgate during opening and applies a closing torque to the tailgate during closing.
    Type: Application
    Filed: October 31, 2007
    Publication date: March 6, 2008
    Applicant: NISSAN TECHNICAL CENTER NORTH AMERICA, INC.
    Inventors: Richard Eschebach, William Bowes, Nandkumar Rangnekar, Rahul Joshi, Robert Gaines
  • Patent number: 7324354
    Abstract: A wide range power supply capable of delivering 20V to 5000V is provided. The power supply of the present invention uses switch mode technology to achieve high overall operating efficiency and is capable of operating from no load to full load without loss of regulation. The power supply in accordance with the embodiments of the present invention operates directly from the utility supply (e.g., 110V/220V and 50 Hz/60 Hz). In one embodiment, the power supply's power conversion stage includes the following stages: an input rectifier; a buck converter; a quasi-resonant inverter; and a voltage multiplier. The above indicated stages are connected in series to achieve the large output voltage range. High precision is obtained from a use of a digital feedback loop, possibly in connection with an analog feedback loop.
    Type: Grant
    Filed: July 6, 2006
    Date of Patent: January 29, 2008
    Assignee: Bio-Rad Laboratories, Inc.
    Inventors: Rahul Joshi, Don Hutson
  • Patent number: 7322630
    Abstract: A vehicle tailgate lift assist support structure is disclosed that includes a vehicle rear end structure, a vehicle tailgate and a lift assist device. The vehicle rear end structure includes first and second walls that extend generally perpendicular to one another. A hinge reinforcement bracket has first and second reinforcing parts. The first reinforcing part is fastened on the first wall and the second reinforcing part is fastened on the second wall. A vehicle tailgate is pivotally coupled to the hinge reinforcement bracket and the rear end structure to open and close by rotation about a tailgate pivot axis. A lift assist device is operably connected to the tailgate hinge and the vehicle rear end structure to dampen opening movement and to apply a closing torque to tailgate hinge during closing movement of the vehicle tailgate.
    Type: Grant
    Filed: December 12, 2006
    Date of Patent: January 29, 2008
    Assignee: Nissan Technical Center North America, Inc.
    Inventors: Richard Eschebach, William Bowes, Nandkumar Rangnekar, Rahul Joshi, Robert Gaines
  • Publication number: 20070145761
    Abstract: A vehicle tailgate lift assist support structure is disclosed that includes a vehicle rear end structure, a vehicle tailgate and a lift assist device. The vehicle rear end structure includes first and second walls that extend generally perpendicular to one another. A hinge reinforcement bracket has first and second reinforcing parts. The first reinforcing part is fastened on the first wall and the second reinforcing part is fastened on the second wall. A vehicle tailgate is pivotally coupled to the hinge reinforcement bracket and the rear end structure to open and close by rotation about a tailgate pivot axis. A lift assist device is operably connected to the tailgate hinge and the vehicle rear end structure to dampen opening movement and to apply a closing torque to tailgate hinge during closing movement of the vehicle tailgate.
    Type: Application
    Filed: December 12, 2006
    Publication date: June 28, 2007
    Applicant: Nissan Technical Center North America, Inc.
    Inventors: Richard Eschebach, William Bowes, Nandkumar Rangnekar, Rahul Joshi, Robert Gaines
  • Publication number: 20070008745
    Abstract: A wide range power supply capable of delivering 20V to 5000V is provided. The power supply of the present invention uses switch mode technology to achieve high overall operating efficiency and is capable of operating from no load to full load without loss of regulation. The power supply in accordance with the embodiments of the present invention operates directly from the utility supply (e.g., 110V/220V and 50 Hz/60 Hz). In one embodiment, the power supply's power conversion stage includes the following stages: an input rectifier; a buck converter; a quasi-resonant inverter; and a voltage multiplier. The above indicated stages are connected in series to achieve the large output voltage range. High precision is obtained from a use of a digital feedback loop, possibly in connection with an analog feedback loop.
    Type: Application
    Filed: July 6, 2006
    Publication date: January 11, 2007
    Applicant: Bio-Rad Laboratories, Inc.
    Inventors: Rahul Joshi, Don Hutson
  • Patent number: 7147260
    Abstract: A vehicle tailgate lift assist support structure is disclosed that includes a vehicle rear end structure, a vehicle tailgate and a lift assist device. The vehicle rear end structure includes first and second walls that extend generally perpendicular to one another. A hinge reinforcement bracket has first and second reinforcing parts. The first reinforcing part is fastened on the first wall and the second reinforcing part is fastened on the second wall. A vehicle tailgate is pivotally coupled to the hinge reinforcement bracket and the rear end structure to open and close by rotation about a tailgate pivot axis. A lift assist device is operably connected to the tailgate hinge and the vehicle rear end structure to dampen opening movement and to apply a closing torque to tailgate hinge during closing movement of the vehicle tailgate.
    Type: Grant
    Filed: March 11, 2005
    Date of Patent: December 12, 2006
    Assignee: Nissan Technical Center North America
    Inventors: Richard Eschebach, William Bowes, Nandkumar Rangnekar, Rahul Joshi, Robert Gaines
  • Publication number: 20060202500
    Abstract: A vehicle tailgate lift assist support structure is disclosed that includes a vehicle rear end structure, a vehicle tailgate and a lift assist device. The vehicle rear end structure includes first and second walls that extend generally perpendicular to one another. A hinge reinforcement bracket has first and second reinforcing parts. The first reinforcing part is fastened on the first wall and the second reinforcing part is fastened on the second wall. A vehicle tailgate is pivotally coupled to the hinge reinforcement bracket and the rear end structure to open and close by rotation about a tailgate pivot axis. A lift assist device is operably connected to the tailgate hinge and the vehicle rear end structure to dampen opening movement and to apply a closing torque to tailgate hinge during closing movement of the vehicle tailgate.
    Type: Application
    Filed: March 11, 2005
    Publication date: September 14, 2006
    Applicant: Nissan Technical Center North America, Inc.
    Inventors: Richard Eschebach, William Bowes, Nandkumar Rangnekar, Rahul Joshi, Robert Gaines
  • Patent number: 7036362
    Abstract: A method is disclosed for determining viscosity and density of fluid from formations surrounding an earth borehole, including the following steps: (a) suspending a formation testing device in the borehole; (b) drawing formation fluid into the device; (c) causing the fluid to flow in a flow line under a first set of conditions; (d) causing the fluid to flow in the flow line under a second set of conditions; (e) measuring a first fluid pressure differential in the flow line during fluid flow under the first set of conditions, and measuring a second pressure differential in the flow line during fluid flow under the second set of conditions; and (f) determining density and viscosity of the fluid as a function of the first and second measured pressure differentials.
    Type: Grant
    Filed: January 20, 2003
    Date of Patent: May 2, 2006
    Assignee: Schlumberger Technology Corporation
    Inventors: Sammy S. Haddad, Erik Rylander, Rahul Joshi
  • Publication number: 20040139798
    Abstract: A method is disclosed for determining viscosity and density of fluid from formations surrounding an earth borehole, including the following steps: (a) suspending a formation testing device in the borehole; (b) drawing formation fluid into the device; (c) causing the fluid to flow in a flow line under a first set of conditions; (d) causing the fluid to flow in the flow line under a second set of conditions; (e) measuring a first fluid pressure differential in the flow line during fluid flow under the first set of conditions, and measuring a second pressure differential in the flow line during fluid flow under the second set of conditions; and (f) determining density and viscosity of the fluid as a function of the first and second measured pressure differentials.
    Type: Application
    Filed: January 20, 2003
    Publication date: July 22, 2004
    Inventors: Sammy S. Haddad, Erik Rylander, Rahul Joshi