Location History:
- Lyndeborough, NH (US) (1993 - 2000)
- Lyndeboro, NH (US) (1993 - 2002)
Company Filing History:
Years Active: 1993-2002
Title: Barry A Cullen: Innovator in Chemical Synthesis
Introduction
Barry A Cullen is a notable inventor based in Lyndeborough, NH (US). He has made significant contributions to the field of chemical synthesis, holding a total of 10 patents. His work focuses on innovative processes that enhance the efficiency and yield of chemical reactions.
Latest Patents
Among his latest patents is the "Facile synthesis of phosphonomethylglycine from phosphonomethyliminodiacetic acid." This process allows for the preparation of phosphonomethylglycine in nearly quantitative yields while eliminating the use of a noble metal co-catalyst. The method utilizes hydrogen peroxide, in combination with activated carbon, to oxidize PMIDA to PMG with high efficiency. The reaction's endpoint is monitored by controlling the concentration of oxygen in the gaseous reaction products. Another significant patent is the "Synthesis of phosphonomethyliminodiacetic acid with reduced effluent." This process involves reacting alkali metal IDA with a strong mineral acid to convert it into soluble IDA phosphite salt, which is then phosphonomethylated.
Career Highlights
Barry A Cullen has worked with prominent companies such as Hampshire Chemical Corporation and W.R. Grace & Co. His experience in these organizations has contributed to his expertise in chemical processes and innovations.
Collaborations
Throughout his career, Barry has collaborated with notable coworkers, including Brian A Parker and Roger R Gaudette. These partnerships have likely enriched his research and development efforts.
Conclusion
Barry A Cullen's contributions to chemical synthesis through his innovative patents and collaborations highlight his role as a significant inventor in the field. His work continues to influence advancements in chemical processes.