Compositions – Vaporization – or expansion – refrigeration or heat or energy...
Reexamination Certificate
2005-06-07
2005-06-07
Hardee, John R. (Department: 1751)
Compositions
Vaporization, or expansion, refrigeration or heat or energy...
C510S213000, C510S245000
Reexamination Certificate
active
06902686
ABSTRACT:
A hydrocarbon composition prepared by combining methane, ethane, isopentane, normal pentane, hexane and heptane at an appropriate compounding ratio contains 75% or more by volume of propane, isobutane and normal butane, to have ignition temperature of 800° C. and above. This composition is safe and economical in using as a refrigerant for use in air conditioners and refrigerators or a detergent for cleansing precision components such as semiconductor chips. The composition can be used independently without being combined with a conventional refrigerant such as CFC and HFC and does not destroy ozone, thus to contribute to the protection of the environment.
REFERENCES:
patent: 4511381 (1985-04-01), Mehra
patent: 6336333 (2002-01-01), Lindgren
patent: 54-6881 (1979-01-01), None
patent: 54-6882 (1979-01-01), None
patent: 1-139676 (1989-06-01), None
patent: 1-139677 (1989-06-01), None
patent: 8-176536 (1996-07-01), None
A.S. Trust & Holdings Inc.
Hardee John R.
Wenderoth , Lind & Ponack, L.L.P.
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