Location History:
- Rehovot, IL (1976)
- Beer Sheva, IL (1981)
- Ness Ziona, IL (1988 - 1989)
Company Filing History:
4 out of 1,168 
1 out of 39 
Years Active: 1976-1989
Title: The Innovations of Stephen L Daren
Introduction
Stephen L Daren is a notable inventor based in Ness Ziona, IL. He has made significant contributions to the field of chemistry, particularly in the stabilization and production of various bromostyrenes. With a total of 5 patents to his name, Daren's work has had a considerable impact on the industry.
Latest Patents
One of Daren's latest patents is focused on the stabilization of bromostyrenes. This invention relates to the stabilization of monobromostyrene, dibromostyrene, and their mixtures. The stabilization is achieved through the use of hydroxy-benzene derivatives, which contain at least two substituents, one being a hydroxy group. The process is effectively carried out by heating the styrene material with an excess of the inhibitor, distilling the monomer, and adding an additional quantity of the inhibitor. It is preferable to dry the distilled monomer before adding the further quantity of inhibitor. Another significant patent involves the production of crystalline tribromostyrene. This improved process includes the removal of hydrogen bromide in a two-phase system using phase transfer catalysts. One phase is aqueous, containing an alkali metal hydroxide, while the second phase consists of β-bromoethyltribromobenzene in an alcohol solvent.
Career Highlights
Throughout his career, Stephen L Daren has worked with prominent companies such as Yeda Research and Development Company and Makhteshim Chemical Works. His experience in these organizations has allowed him to develop and refine his innovative ideas in the field of chemistry.
Collaborations
Daren has collaborated with notable individuals in his field, including David Vofsi and Moshe Levy. These partnerships have contributed to the advancement of his research and inventions.
Conclusion
Stephen L Daren's contributions to the field of chemistry through his patents and collaborations highlight his innovative spirit and dedication to advancing technology. His work continues to influence the industry and inspire future inventors.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.