This inventor holds 27 USPTO granted patents and 7 published patent applications, plus 8 CIPO patents and 6 EPO patents, primarily in Wastewater Treatment. Top assignees: General Electric Company, Betz Laboratories, Inc., Betzdearborn, Inc.. Active years: 1990-2018.
Location History:
- Langhorne, PA (US) (1990 - 1992)
- Doylestown, PA (US) (1992 - 2018)
Company Filing History:
11 out of 52,369 
10 out of 577 
3 out of 217 
Years Active: 1990-2018
Areas of Expertise:
Title: **Stephen Robert Vasconcellos: Innovator in Polymer Chemistry and Nitrate Removal Technologies**
Introduction
Stephen Robert Vasconcellos, a prolific inventor based in Doylestown, PA, has made significant contributions to the field of polymer chemistry, holding an impressive total of 27 patents. His innovations particularly focus on methods and materials that address environmental challenges, such as the removal of nitrate ions from solutions.
Latest Patents
Among his latest inventions is a patented method for removing nitrate ions from a solution. This method involves a polymer that comprises a protonated amine moiety and an anion derived from an acid with a pKa value greater than about 1. By contacting this polymer with the contaminated solution, it can bind a portion of the nitrate ions and form a polymer-nitrate complex, effectively facilitating the separation of these complexes from the solution.
Additionally, he has developed a polymer through a unique series of reactions involving glycidyl (meth)acrylate and other chemical compounds, which results in a novel intermediate polymer. This polymer shows promise for various applications, and he has detailed methods for utilizing it effectively in his recent patent documentation.
Career Highlights
Stephen has had a notable career with significant roles in esteemed organizations, including General Electric Company and Betz Laboratories, Inc. His work at these companies has not only garnered him patents but has also positioned him as a leader in innovative solution development within the field.
Collaborations
Throughout his career, Stephen has collaborated with distinguished colleagues, including Fu Chen and Michael R. Wood. These partnerships have allowed for cross-pollination of ideas and have been instrumental in advancing the research and development of his patented technologies.
Conclusion
Stephen Robert Vasconcellos is a key figure in polymer research and environmental solutions, as evidenced by his numerous patents. His ongoing contributions continue to shape the future of innovations aimed at addressing critical issues like nitrate contamination, showcasing the importance of creativity and collaboration in the scientific community.