Patent ID: 7323041

Claim:
A gas storage canister, comprising: a case including first and second end sections which are opposite to each other in a direction of flow of gas, the first and second having a gas inflow port and a gas outflow port, the second end section having an atmosphere-opened port; a gas absorbing material disposed inside the case; and a heat accumulative agent including a phase changing material which causes absorption and release of latent heat to occur in accordance with a temperature variation, the heat accumulative material being mixed with the gas adsorbing material and disposed inside the case, wherein a mix proportion of the heat accumulative agent changes in the gas flow direction between the first and second end sections, and wherein the heat accumulative agent has a phase change temperature which is lower than temperature of atmospheric air in a condition where the gas storage canister is used, wherein the mix proportion of the heat accumulative agent is higher at a side of the first end section of the case, than that at a side of the second end section of the case.