A.S. Trust & Holdings has been awarded a U.S. patent for the formula of a blend of pure hydrocarbons that has been designated R441A A.S. Trust & Holdings awarded US patent for R441A HC blendby the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE).
“This patent award allows us to move forward with business ventures that have been pending prior to this approval”, says Richard Maruya, president of A.S. Trust & Holdings and inventor of R441A.
R441A has been certified by independent testing laboratory Intertek (an) as having a very low Global Warming Potential (GWP) as well as a zero Ozone Depletion Potential (ODP).
“R441A is a ground-breaking multi-blend of hydrocarbons and is the only refrigerant formula in the world to achieve these ratings,” he continues. “Single-component hydrocarbon refrigerants cannot function at the same efficiency level as a multi-blend.”
Another hydrocarbon blend to receive ASHRAE designation R443A
Another A.S. Trust & Holdings hydrocarbon multi-blend, designed for use in commercial air-conditioners, has recently been designated R443A by the ASHRAE 34 Committee. Confirmation after public comment is expected at the upcoming ASHRAE summer convention.
About R441A
Invented by Mr Richard Maruya of A.S. Trust & Holdings’, R441A is one of the first hydrocarbon refrigerants approved for sale in the United States by the U.S. Environmental Protection Agency under the Significant New Alternative Policy (SNAP) for use in household refrigerators and freezers.
It operates with mineral oil and can be used as a direct replacement in residential appliances, commercial refrigeration units and automotive cooling systems designed for R12, R134a and R22. While R441a is flammable the very small amount of this climate-friendly refrigerant required makes the risk assessment a non-factor.
ComStar International Inc. has been working with A.S. Trust & Holding Co. and has the production and distribution rights to R441A. It currently manufactures the blend at its US plant and is now making preparations to supply Asian customers from its China plant, while together with its Chinese joint venture company will begin offering safety certified compressors in the US and overseas markets using the R441A.
