Vijay Srivatsan

8310539, Nov 13, 2012

May 29, 2009

12/475252

Bingyan Zhao - West Sacramento CA, US
Xiaodong Tian - West Sacramento CA, US
Zhe Jin - West Sacramento CA, US
Vijay Srivatsan - West Sacramento CA, US

Mori Seiki Co., Ltd - Nara

H04N 7/18
H04N 17/00
G06K 9/00
G06F 19/00

348142, 348187, 382154, 700245

The calibration device is set up in a machine tool and provides: a image capture subject material having a calibration pattern that includes one feature point and being attached to the spindle , two-dimensional coordinate calculation parts that calculate the two-dimensional coordinates of feature points based on the two-dimensional image data that is created from the images of the calibration pattern that were captured at multiple movement positions of the spindle by the CCD camera ; a three-dimensional coordinate calculation part that calculates the three-dimensional coordinates of the feature points that correspond to each movement position of the spindle ; and a parameter calculation part that calculates the intrinsic parameters and extrinsic parameters of the CCD camera based on the two-dimensional coordinates and three-dimensional coordinates at each movement position of the spindle.

8444330, May 21, 2013

Sep 23, 2011

13/243705

Vijay Srivatsan - Davis CA, US
Zhe Jin - Sacramento CA, US
Yadong Liu - Woodland CA, US
Bingyan Zhao - West Sacramento CA, US
Adam Hansel - Sacramento CA, US
Hidenori Saraie - Davis CA, US

Mori Seiki Co., Ltd. - Yamatokoriyama-shi

G03B 17/00
G03B 29/00

396427, 396429

An enclosure for an imaging device. In one embodiment, the enclosure includes a housing with a transparent window. A shutter mechanism is disposed on the housing and transparent window, and includes an opening formed therein. A shutter covers and uncovers the opening. Further, a gas supplying unit supplies gas to a space between the housing and the shutter mechanism. In another embodiment, the enclosure includes an inner housing with a transparent window, and an outer housing overlapping the inner housing and with an opening formed therein. A driving unit moves the opening along a predetermined path over the transparent window. A gas supplying unit supplies gas to the outer. In yet another embodiment, the enclosure includes inner and outer housings each having an opening formed therein. A rotating unit rotates one of the inner and outer housings, and a gas supplying unit supplies gas to the inner housing.

20140065508, Mar 6, 2014

Aug 28, 2013

14/011804

Cheng-Yu LIN - Sunnyvale CA, US
Vijay SRIVATSAN - Sacramento CA, US

Bloom Energy Corporation - Sunnyvale CA

H01M 8/02

429457

Various embodiments include fuel cell interconnects having a fuel distribution portion having an inlet opening, a fuel collection portion having an outlet opening, and a primary fuel flow field containing channels, wherein the fuel distribution portion comprises at least one raised feature defining a fuel distribution flow path, and the fuel distribution flow path is not continuous with the channels in the primary fuel flow field. The at least one raised feature may include, for example, a network of ribs and/or dots. Further embodiments include interconnects having a fuel distribution portion with a variable surface depth to provide variable flow restriction and/or a plenum with variable surface depth and raised a raised relief feature on the cathode side, and/or varying flow channel depths and/or rib heights adjacent a fuel hole.

20220278341, Sep 1, 2022

May 11, 2022

17/662956

- San Jose CA, US
Vijay SRIVATSAN - Sunnyvale CA, US
Robert M. HINTZ - San Jose CA, US
Swaminathan VENKATARAMAN - Cupertino CA, US
Padiadpu Shankara ANANTHA - Bangalore, IN
Emad EL BATAWI - Sunnyvale CA, US
Cheng-Yu LIN - Cupertino CA, US
Sagar MAINKAR - Sunnyvale CA, US
Gilbert RICHARDS - San Jose CA, US
Jonathan SCHOLL - Mountain View CA, US

H01M 8/0247
H01M 8/2425
H01M 8/0258

A cross-flow interconnect and a fuel cell stack including the same, the interconnect including fuel inlets and outlets that extend through the interconnect adjacent to opposing first and second peripheral edges of the interconnect; an air side; and an opposing fuel side. The air side includes an air flow field including air channels that extend in a first direction, from a third peripheral edge of the interconnect to an opposing fourth peripheral edge of the interconnect; and riser seal surfaces disposed on two opposing sides of the air flow field and in which the fuel inlets and outlets are formed. The fuel side includes a fuel flow field including fuel channels that extend in a second direction substantially perpendicular to the first direction, between the fuel inlets and outlets; and a perimeter seal surface surrounding the fuel flow field and the fuel inlets and outlets.

20210273242, Sep 2, 2021

May 19, 2021

17/324283

- San Jose CA, US
Cheng-Yu LIN - Sunnyvale CA, US
Vijay SRIVATSAN - Sunnyvale CA, US

H01M 8/026
H01M 8/2483
H01M 8/0276
H01M 8/2425

Various embodiments include fuel cell interconnects having a fuel distribution portion having an inlet opening, a fuel collection portion having an outlet opening, and a primary fuel flow field containing channels, wherein the fuel distribution portion comprises at least one raised feature defining a fuel distribution flow path, and the fuel distribution flow path is not continuous with the channels in the primary fuel flow field. The at least one raised feature may include, for example, a network of ribs and/or dots. Further embodiments include interconnects having a fuel distribution portion with a variable surface depth to provide variable flow restriction and/or a plenum with variable surface depth and raised a raised relief feature on the cathode side, and/or varying flow channel depths and/or rib heights adjacent a fuel hole.

20190372132, Dec 5, 2019

May 29, 2019

16/424930

- San Jose CA, US
Vijay SRIVATSAN - Sunnyvale CA, US
Robert M. HINTZ - San Jose CA, US
Swaminathan VENKATARAMAN - Cupertino CA, US
Padiadpu Shankara ANANTHA - Bangalore, IN
Emad EL BATAWI - Sunnyvale CA, US
Cheng-Yu LIN - Cupertino CA, US
Sagar MAINKAR - Sunnyvale CA, US
Gilbert RICHARDS - San Jose CA, US
Jonathan SCHOLL - Mountain View CA, US

H01M 8/0247
H01M 8/0258
H01M 8/2425

A cross-flow interconnect and a fuel cell stack including the same, the interconnect including fuel inlets and outlets that extend through the interconnect adjacent to opposing first and second peripheral edges of the interconnect; an air side; and an opposing fuel side. The air side includes an air flow field including air channels that extend in a first direction, from a third peripheral edge of the interconnect to an opposing fourth peripheral edge of the interconnect; and riser seal surfaces disposed on two opposing sides of the air flow field and in which the fuel inlets and outlets are formed. The fuel side includes a fuel flow field including fuel channels that extend in a second direction substantially perpendicular to the first direction, between the fuel inlets and outlets; and a perimeter seal surface surrounding the fuel flow field and the fuel inlets and outlets.

20180217075, Aug 2, 2018

Mar 21, 2018

15/927415

- Sunnyvale CA, US
Daniel Darga - Pleasanton CA, US
Michael Groesch - Sunnyvale CA, US
Harald Herchen - Los Altos CA, US
Vijay Srivatsan - Sunnyvale CA, US

G01N 25/16
G01N 27/02

Methods and systems for measuring and/or estimating a coefficient of thermal expansion (CTE) of a component of a fuel cell system. A CTE measurement technique includes securing a measurement member over a surface of the component via a seal having a melting point, heating the seal above its melting point of the seal, cooling the component, measurement member and seal to a second temperature below the melting point of the seal, and determining the CTE of the component based on the change in the span of the measurement member after cooling. A fuel cell component characterization technique includes measuring an electrical resistivity (ER), conductivity (EC), resistance or conductance of the component, measuring at least one additional property of the component which, together with ER, EC, resistance or conductance, correlates to the CTE of the component, and sorting the component based on the measurements.

20150147679, May 28, 2015

Nov 17, 2014

14/543095

- Sunnyvale CA, US
Tad ARMSTRONG - Burlingame CA, US
Vijay SRIVATSAN - Sacramento CA, US
Harald HERCHEN - Los Altos CA, US
Cheng-Yu LIN - Sunnyvale CA, US

H01M 8/02
H01M 8/12
H01M 8/24

429509, 429535

A method of making an interconnect for a solid oxide fuel cell stack includes providing a chromium alloy interconnect and providing a nickel mesh in contact with a fuel side of the interconnect. Formation of a chromium oxide layer is reduced or avoided in locations between the nickel mesh and the fuel side of the interconnect. A Cr—Ni alloy or a Cr—Fe—Ni alloy is located at least in the fuel side of the interconnect under the nickel mesh.