This inventor holds 3 USPTO granted patents. Top assignees: Sri International, Other. Active years: 1981-1989.
Location History:
- San Jose, CA (US) (1985)
- Sunnyvale, CA (US) (1981 - 1989)
Company Filing History:
2 out of 1,353 
1 out of 834,350 Years Active: 1981-1989
Title: The Innovative Contributions of Robert F. Helwing
Introduction
Robert F. Helwing is a notable inventor based in Sunnyvale, California, recognized for his significant contributions to the field of chemistry and materials science. With a total of three patents to his name, Helwing has developed innovative compositions that have practical applications in various industries.
Latest Patents
One of Helwing's latest patents is titled "Covalently bonded active agents with carbonium ion base groups." This invention relates to a unique set of compositions characterized by including defined active agents covalently bonded to carbonium ion base groups. The covalently bonded compositions include base groups in the nature of ketene acetals and vinyl ethers, along with their thio equivalents. The available active agents encompass a range of compounds, including alcohols, phenols, carboxylic acids, thiols, amines, amides, urethanes, phosphate esters, sulfonic acids, and oximes. These compositions can be formed by self-actuating reactions when the appropriate base groups and active agents are juxtaposed under suitable environmental conditions. The primary applications of these compositions are in controlled release scenarios, such as drugs and topical insecticides, where predictable hydrolytic release of the active agent is essential.
Another significant patent by Helwing involves the "Preparation of ketene acetals by rearrangement of allyl and substituted allyl acetals." In this process, allyl acetals and their substituted variants are rearranged to produce ketene acetals by heating the acetals in a solution of an alkali metal alkoxide in an ethylene amine.
Career Highlights
Throughout his career, Robert F. Helwing has worked with esteemed organizations, including SRI International, where he has contributed to various research and development projects. His work has had a lasting impact on the field, particularly in the development of new chemical compositions and methods.
Collaborations
Helwing has collaborated with notable colleagues, including Jorge Heller and Donald W. Penhale, who have contributed to his research endeavors and innovations.
Conclusion
Robert F. Helwing's innovative work in the field of chemistry has led to the development of valuable patents that have practical applications in controlled release technologies. His contributions continue to influence the industry and inspire future innovations.