WC

William Chun

Caltech: 21 patents #68 of 4,321Top 2%
📍 Los Angeles, CA: #461 of 12,377 inventorsTop 4%
🗺 California: #27,156 of 386,348 inventorsTop 8%
Overall (All Time): #211,187 of 4,157,543Top 6%
21
Patents All Time

Issued Patents All Time

Showing 1–21 of 21 patents

Patent #TitleCo-InventorsDate
7488548 Direct methanol feed fuel cell and system Subbarao Surampudi, Harvey A. Frank, Sekharipuram R. Narayanan, Barbara Jeffries-Nakamura, Andrew Kindler +1 more 2009-02-10
7470478 Direct methanol feed fuel cell and system Subbarao Surampudi, Harvey A. Frank, Sekharipuram R. Narayanan, Barbara Jeffries-Nakamura, Andrew Kindler +1 more 2008-12-30
7425384 Direct methanol feed fuel cell and system Subbarao Surampudi, Harvey A. Frank, Sekharipuram R. Narayanan, Barbara Jeffries-Nakamura, Andrew Kindler +1 more 2008-09-16
7056428 Hydrogen generation by electrolysis of aqueous organic solutions Sekharipuram R. Narayanan, Barbara Jeffries-Nakamura, Thomas I. Valdez 2006-06-06
6703150 Direct methanol feed fuel cell and system Subbarao Surampudi, Harvey A. Frank, Sekharipuram R. Narayanan, Barbara Jeffries-Nakamura, Andrew Kindler +1 more 2004-03-09
6589684 Direct methanol feed fuel cell and system Subbarao Surampudi, Harvey A. Frank, Sekharipuram R. Narayanan, Barbara Jeffries-Nakamura, Andrew Kindler +1 more 2003-07-08
6533919 Hydrogen generation by electrolysis of aqueous organic solutions Sekharipuram R. Narayanan, Barbara Jeffries-Nakamura, Thomas I. Valdez 2003-03-18
6485851 Power generation in fuel cells using liquid methanol and hydrogen peroxide Sekharipuram R. Narayanan, Thomas I. Valdez 2002-11-26
6432284 Hydrogen generation by electrolysis of aqueous organic solutions Sekharipuram R. Narayanan, Barbara Jeffries-Nakamura, Thomas I. Valdez 2002-08-13
6420059 Direct methanol feed fuel cell and system Subbarao Surampudi, Harvey A. Frank, Sekharipuram R. Narayanan, Barbara Jeffries-Nakamura, Andrew Kindler +1 more 2002-07-16
6368492 Hydrogen generation by electrolysis of aqueous organic solutions Sekharipuram R. Narayanan, Barbara Jeffries-Nakamura, Thomas I. Valdez 2002-04-09
6306285 Techniques for sensing methanol concentration in aqueous environments Sekharipuram R. Narayanan, Thomas I. Valdez 2001-10-23
6303244 Direct methanol feed fuel cell and system Subbarao Surampudi, Harvey A. Frank, Sekharipuram R. Narayanan, Barbara Jeffries-Nakamura, Andrew Kindler +1 more 2001-10-16
6299744 Hydrogen generation by electrolysis of aqueous organic solutions Sekharipuram R. Narayanan, Barbara Jeffries-Nakamura, Thomas I. Valdez 2001-10-09
6277447 Direct deposit of catalyst on the membrane of direct feed fuel cells Sekharipuram R. Narayanan, Barbara Jeffries-Nakamura, Thomas I. Valdez, Juergen Linke 2001-08-21
6265093 Direct methanol feed fuel cell and system Subbarao Surampudi, Harvey A. Frank, Sekharipuram R. Narayanan, Barbara Jeffries-Nakamura, Andrew Kindler +1 more 2001-07-24
6254748 Direct methanol feed fuel cell and system Subbarao Surampudi, Harvey A. Frank, Sekharipuram R. Narayanan, Barbara Jeffries-Nakamura, Andrew Kindler +1 more 2001-07-03
6221523 Direct deposit of catalyst on the membrane of direct feed fuel cells Sekharipuram R. Narayanan, Barbara Jeffries-Nakamura, Thomas I. Valdez, Juergen Linke 2001-04-24
6171721 Sputter-deposited fuel cell membranes and electrodes Sekharipuram R. Narayanan, Barbara Jeffries-Nakamura, Ron P. Ruiz, Thomas I. Valdez 2001-01-09
6146781 Direct methanol feed fuel cell and system Subbarao Surampudi, Harvey A. Frank, Sekharipuram R. Narayanan, Barbara Jeffries-Nakamura, Andrew Kindler +1 more 2000-11-14
5773162 Direct methanol feed fuel cell and system Subbarao Surampudi, Harvey A. Frank, Sekharipuram R. Narayanan, Barbara Jeffries-Nakamura, Andrew Kindler +1 more 1998-06-30