About 52 results
https://drivepatents.com/patents/1079997 · 16 Feb 2005
A catalyst paste composition for making electrodes has a uniform dispersion condition of a carbon black supporting a hydrogen reduction catalyst and is excellent in storage stability. The catalyst paste composition comprises a carbon black supporting a hyd...
https://drivepatents.com/patents/1082009 · 1 Dec 2004
The invention provides a manufacturing process for MEA that enables sufficient bond strength among an electrolyte membrane and electrode substrates even when the electrolyte membrane comprises a heat-resistant material such as an aromatic polymer. The proc...
https://drivepatents.com/patents/1082193 · 24 Nov 2004
A membrane-electrode assembly for direct methanol type fuel cell and a proton conductive membrane for direct methanol type fuel cell are disclosed. The membrane-electrode assembly comprises a negative electrode and a positive electrode assembled via a prot...
https://drivepatents.com/patents/1084095 · 15 Sep 2004
Disclosed are a conjugated diolefin (co)polymer rubber formed from either a conjugated diolefin or a conjugated diolefin and an aromatic vinyl compound, wherein the (co) polymer rubber has a primary amino group and an alkoxysilyl group which are bonded to ...
https://drivepatents.com/patents/1084578 · 25 Aug 2004
The invention provides an electrode paste composition that enables a sufficient pore volume of electrode for high generating performance while maintaining good storage stability. The paste composition comprises a carbon black supporting a hydrogen reductio...
https://drivepatents.com/patents/1084617 · 25 Aug 2004
Disclosed are a polymer electrolyte having improved hot water resistance and radical resistance, a proton conductive membrane comprising the polymer electrolyte, and a membrane-electrode assembly including the proton conductive membrane. The polymer electr...
https://drivepatents.com/patents/1084949 · 11 Aug 2004
Disclosed is a CMP pad which is abrasive-free and comprises cells and/or a recessed portion-forming material both having an average diameter ranging from 0.05 to 290 mu m and occupying a region (11) ranging from 0.1% by volume to 5% by volume based on an e...
https://drivepatents.com/patents/1086067 · 23 Jun 2004
Described herein is a production method of sulfonated polyarylene that is safe and enables easy control of the amount and position of sulfonic groups introduced in the polymer. The sulfonated polyarylene is also disclosed. The invention further provides a ...
https://drivepatents.com/patents/1088015 · 14 Apr 2004
A proton conductive composition comprises a heteropolyacid and a polyarylene having a sulfonic group. The composition has good water resistance and toughness, and shows an excellent proton conductivity without any treatment to increase the acid concentrati...
https://drivepatents.com/patents/1089443 · 25 Feb 2004
The invention provides a proton conductive resin composition from which proton conductive membranes exhibiting high proton conductivity can be obtained without treatment to increase the acid concentration in the membrane. The invention also provides a meth...