Inventor

CAMPBELL STEPHEN A

CA32 patents

⚠️ This page may combine multiple inventors who share the name “CAMPBELL STEPHEN A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CAMPBELL STEPHEN A

BALLARD POWER SYSTEMS

Method and apparatus for reducing reactant crossover in an electrochemical fuel cell

Fuel cell with fluid distribution layer having intergral sealing capability

Impregnation of microporous electrocatalyst particles for improving performance in an electrochemical fuel cell

Electrochemical fuel cell membrane electrode assembly with porous electrode substrate

Method and apparatus for reducing reactant crossover in a liquid feed electrochemical fuel cell

Porous electrode substrate for an electrochemical fuel cell

Electrochemical cell with fluid distribution layer having integral sealing capability

Method and apparatus for detecting transfer leaks in fuel cells and fuel cell stacks

Method and apparatus for detecting transfer leaks in fuel cells

Fuel cell fluid distribution layer having integral sealing capability

Non-noble metal catalysts for the oxygen reduction reaction

Method and apparatus for reducing reactant crossover in a liquid feed electrochemical fuel cell

Method of reducing fuel cell performance degradation of an electrode comprising porous components

Method and device for improved catalytic activity in the purification of fluids

Impregnation of microporous electrocatalyst particles for improving performance in an electrochemical fuel cell

NANO ONE MAT CORP

Phosphate stabilized lithium ion battery cathode

Phosphate stabilized lithium ion battery cathode

Fine and ultrafine powders and nanopowders of lithium metal oxides for battery applications

Fine and ultrafine powders and nanopowders of lithium metal oxides for battery applications

One-pot synthesis for lithium ion battery cathode material precursors

Battery with spinel cathode

UNIV MINNESOTA

Process for forming hafnium oxide films

Optical heating device for rapid thermal processing (RTP) system

CORNING INC

Monolithic catalyst dehydrogenation reactor

Flow distributor for monolith reactors

CAMPBELL STEPHEN A

Catalyst support for fuel cell

Synthesis of stable and durable catalyst composition for fuel cell

JOHNSON MATTHEY PLC

Solid polymer fuel cell with improved voltage reversal tolerance

UNISYS CORP

Interconnect for layered integrated circuit assembly

BALLARD POWER SYSTEM INC

Carbon-supported catalysts for fuel cells

BALLARD POWERS SYSTEMS INC

Antifreeze cooling subsystem

NANO ONE MAT CORPL

Intermediate material between precursor and cathode active material