Company Filing History:
3 out of 462 
2 out of 328 Years Active: 1976-1993
Title: Walter W. Ruthel: Innovator in Water Treatment Technologies
Introduction
Walter W. Ruthel is a notable inventor based in Grand Island, NY (US). He has made significant contributions to the field of water treatment, particularly in the removal of fluoride and sulfate ions from aqueous streams. With a total of 5 patents to his name, Ruthel's work has had a lasting impact on environmental engineering.
Latest Patents
One of Ruthel's latest patents focuses on fluoride removal from aqueous streams. This innovative method involves adding calcium chloride and a source of phosphate ion to the stream, resulting in the formation of a first precipitate of calcium sulfate and a compound of calcium, fluoride, and phosphate. The precipitate is then separated from the aqueous stream, and a source of carbonate ion is added to form a second precipitate containing fluoride and calcium, which is subsequently separated from the stream.
Another significant patent addresses sulfate removal from chlorate liquor. This method involves selecting a crystallization temperature between about -15 degrees and about 0 degrees Celsius. The maximum concentration of sodium chlorate that is soluble in the liquor at that temperature is determined, and the liquor is diluted to ensure the concentration is below this maximum. Cooling the liquor allows the sulfate ion to crystallize as sodium sulfate decahydrate while preventing sodium chlorate from crystallizing.
Career Highlights
Walter W. Ruthel has worked with prominent companies in the chemical industry, including Occidental Chemical Corporation and Hooker Chemicals & Plastics Corporation. His experience in these organizations has contributed to his expertise in water treatment technologies and environmental solutions.
Collaborations
Throughout his career, Ruthel has collaborated with notable professionals, including Tilak V. Bommaraju and Leo G. Evans. These collaborations have further enriched his work and innovations in the field.
Conclusion
Walter W. Ruthel's contributions to water treatment technologies through his patents demonstrate his commitment to environmental sustainability. His innovative methods for removing fluoride and sulfate ions from aqueous streams highlight the importance of advancements in this critical area.