OZ HC blend patent granted in U.S.
January 8, 2002 -
RATHDRUM, Idaho--After nearly 10 years of examination by the U.S.
Patent Office, OZ Technology was granted the patent for refrigerant
mixtures of hydrocarbons (HCs) January 8, 2002.
"HC blend patent approval is a sign that the
U.S. is finally recognizing that natural, non-toxic earth-friendly
hydrocarbon refrigerant blends are the most logical alternatives
for refrigerants such as R-12 and HFC-134a," commented OZ CEO
R-12, commonly known as Freon, was banned in the U.S.
by international treaty in 1996 for its link to stratospheric ozone
depletion. HFC-134a, a greenhouse gas that was internationally embraced
as the temporary answer to the Freon ban, was demonstrated by scientists
at Wright Patterson AFB in 1998 to be toxic to humans.
Recognizing that the pending Freon ban would create
a worldwide demand for non-ozone depleting refrigerants, Lindgren
began experimenting with HC blends. Having successfully blended
HCs to resolve the environmental problems created by Freon, Lindgren
filed for a patent on his HC blend refrigerants in September, 1992.
Though Lindgren and his company OZ Technology believed that they
had solved the international refrigeration dilemma with HC blends,
they encountered regulatory obstacles. "We were just ahead
of our time. The world is finally catching onto the many benefits
of hydrocarbon blend refrigerants," said Lindgren.
OZ HC blend refrigerant HC-12a, which is compatible
with refrigeration and A/C systems designed to accommodate R-12
and HFC-134a, is considered by the Environmental Protection Agency
(EPA) to be a non-ozoen-depleting "second generation replacement."
According to the EPA, it is legal to replace a non-ozone depleting
first generation alternative refrigerant such as HFC-134a with a
non-ozone depleting second generation replacement such as HC-12a
manufactured by OZ.
OZ has also been granted patents in the United
Kingdom, China and Mexico.
For more information contact Don Harkins at OZ Technology, (208)