Patent ID: 6047744
Filing Date: 2000-04-11
Classification: B01J,B67D,C23C,F17C,Y10T

Abstract:
A method useful for providing a chemical for use in semiconductor manufacture from a manifold to a device, comprising:connecting the fittings of a canister to the fittings of a manifold to thereby provide a delivery system, wherein the manifold comprisesa vacuum supply valve;a vacuum generator;a pressure vent valve;a gas inlet valve;a canister bypass valve;a process line isolation valve;a control valve;a canister inlet valve;a canister outlet valve;a second control valve; anda third control valve;wherein the vacuum supply valve is connected to the vacuum generator; wherein the vacuum generator is connected to the pressure vent valve and the control valve; wherein the control valve connects to the second control valve; wherein the gas inlet valve is connected to the pressure vent valve and the bypass valve; wherein the bypass valve is further connected to the isolation valve and the second control valve; wherein the isolation valve is also connected the third control valve; wherein canister inlet valve is connected to the second control valve and the third control valve; and wherein canister outlet valve is further connected to the third control valve; wherein a dip tube in the canister connects to the canister outlet valve; wherein a line connects the process line isolation valve to the device; wherein the valves are connected by lines;introducing a pressurized gas into the canister through the canister inlet valve so that pressure in the canister causes a flow of chemical to exit the canister through the dip tube and through the canister outlet valve, the third control valve, the process line isolation valve and the line to the device.