His Majesty the late King Bhumibol Adulyadej invented many devices with appropriate technology to improve the people’s living conditions and the environment. He became the world’s first monarch to apply for, and be granted, a patent for his own invention.
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The Cabinet on 21 November 2006 approved a proposal by the National Research Council of Thailand to present His Majesty King Bhumibol with the title “Father of Thai Invention.” The decision was meant to honor His Majesty and encourage Thai people to follow in his footsteps. It was also intended to urge young people to create social capital in terms of inventions and to promote cooperation among inventors.
Earlier, the Cabinet on 10 May 1994 approved the proclamation of 2 February each year as National Inventors Day. His Majesty King Bhumibol had invented an aerator for use in wastewater treatment and it was registered at the Department of Intellectual Property, Ministry of Commerce.
The first patent was granted on 2 February 1993 for his invention, which is referred to as “Chaipattana Aerator, Model RX-2.” The Chaipattana Aerator is a paddle-wheel machine in the form of a floating buoy that helps add oxygen to water. It was awarded the first prize by the National Research Council of Thailand in July 1993.
Eight years after His Majesty King Bhumibol was granted the first patent, a second patent was presented to him in 2001 for another aerator, referred to as “Chaipattana Aerator, Model RX 5C.” This invention is a prototype of a mechanical oxidation device for use in water treatment. Chaipattana aerators were also presented with awards at an international exhibition in Brussels, Belgium, in the year 2000.
With the first patent, King Bhumibol became the first monarch to be awarded a patent for an invention. Both the public and private sectors have been applying this inexpensive technology to treat wastewater in many places.
His Majesty’s inventions helped save the country’s foreign currency in imports of wastewater treatment equipment as well.