This inventor holds 6 USPTO granted patents and 3 published patent applications, plus 1 CIPO patent. Top assignees: Union Oil Company of California, Molycorp Minerals, LLC, Molycorp, Inc.. Active years: 2005-2013.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Boulder City, NV (US) (2010)
- Las Vegas, NV (US) (2005 - 2013)
Company Filing History:
3 out of 1,113 
2 out of 9 
1 out of 7 Years Active: 2005-2013
Title: The Innovative Contributions of Richard Donald Witham
Introduction
Richard Donald Witham is a notable inventor based in Las Vegas, NV (US). He holds a total of six patents, showcasing his significant contributions to the field of water purification technology. His work primarily focuses on the removal of arsenic from water, addressing a critical environmental and health issue.
Latest Patents
Among his latest patents is a water purification device specifically designed for arsenic removal. This innovative device operates by treating water with a compound containing cerium in the +4 oxidation state, preferably cerium dioxide. This process oxidizes arsenic from the +3 oxidation state to the +5 oxidation state. Following this treatment, the arsenic in the +5 oxidation state is removed from the aqueous phase, typically by contacting the treated feed with alumina or another precipitating agent containing cations in the +3 oxidation state. Another significant patent by Witham is a composition for removing arsenic from aqueous streams, which employs the same method of oxidation and removal.
Career Highlights
Throughout his career, Richard Donald Witham has worked with prominent companies such as Union Oil Company of California and Molycorp Minerals, LLC. His experience in these organizations has contributed to his expertise in developing innovative solutions for water purification.
Collaborations
Witham has collaborated with notable individuals in his field, including Edward Bayer McNew and John L Burba, III. These collaborations have likely enhanced his research and development efforts, leading to impactful inventions.
Conclusion
Richard Donald Witham's contributions to water purification technology, particularly in arsenic removal, highlight his innovative spirit and dedication to solving environmental challenges. His patents and career achievements reflect a commitment to improving public health and safety through scientific advancements.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile