Inventor
CHARTRAND RICHARD L
US10 patents
⚠️ This page may combine multiple inventors who share the name “CHARTRAND RICHARD L”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PLUG POWER INC
5 patentsUS7141323B2Nov 28, 2006
Method and apparatus for electrochemical compression and expansion of hydrogen in a fuel cell system
PLUG POWER INC31 citations92
US7132182B2Nov 7, 2006
Method and apparatus for electrochemical compression and expansion of hydrogen in a fuel cell system
PLUG POWER INC31 citations92
US7045233B2May 16, 2006
Method and apparatus for electrochemical compression and expansion of hydrogen in a fuel cell system
PLUG POWER INC29 citations92
US7691507B2Apr 6, 2010
Combination fuel cell and ion pump, and methods and infrastructure systems employing same
PLUG POWER INC13 citations83
US6821664B2Nov 23, 2004
Method and apparatus for a combined fuel cell and hydrogen purification system
PLUG POWER INC13 citations82
IBM
4 patentsUS5909011AJun 1, 1999
Method and apparatus for modifying circuit having ball grid array interconnections
IBM22 citations91
US5890284AApr 6, 1999
Method for modifying circuit having ball grid array interconnections
IBM21 citations91
US5493076AFeb 20, 1996
Structure for repairing semiconductor substrates
IBM21 citations90
US5446961ASep 5, 1995
Method for repairing semiconductor substrates
IBM26 citations90