December 2009 – International testing firm Intertek submits application for HCR188C1 to be listed by ASHRAE ; approval now pending.
December 2009 – HCR188C1 is officially listed as an approved refrigerant at Intertek.
July 2009 – A.S. Trust receives confirmation from Intertek that the HCR188C1 formulation has zero negative impact on global warming and zero negative impact on the ozone layer.
July 2009 – Improved formula HCR188C1 launched as the first ever replacement for R-22 and R-134a refrigerants.
June 2009 – A.S. Trust receives patent-pending approval in U.S. on the HCR188C1 formulation.
April 2009 - Inventor Richard Maruya awarded the Hawaii State Senate Commendation Award in recognition of his efforts to develop a superior refrigerant.
December 28th, 2008 - HCR188C, the predecessor for HCR188C1, approved for sale in the United States as a replacement for CFC-12 (R-12) coolant fluid in household refrigeration and air conditioning units, making it the only legal alternative available for sale in the U.S.
December 2008 – EPA issues Final Completeness Determination under the Significant New Alternatives Policy (SNAP) program.
April 2008 – Richard Maruya honored with the 2008 Environmental Award for Outstanding Achievement from the EPA’s Region IX office in recognition of his efforts and commitment to protecting the environment through the development of HCR188C. The U.S. Congress notes his “innovative work developing the Hydro Carbon Refrigerant 188C [as] an environmentally safe and efficient alternative to the traditional hydrocarbon-based products harmful to the ozone layer”.
June 2005 – A.S. Trust receives patents for HCR188C in Japan, Korea, China, the UK, France, and Germany.
June 2005 – U.S. Patent 6,902,686 granted for HCR188C.