This inventor holds 3 USPTO granted patents. Top assignees: Internationale Octrooi Maatschappij 'Octropa' Bv, Dsm Resins B.v.. Active years: 1982-1992.
Company Filing History:
2 out of 87 
1 out of 19 Years Active: 1982-1992
Title: **Inventor Waltherus J Sep: Innovator of Aqueous and Unsaturated Polyester Compositions**
Introduction
Waltherus J Sep, a distinguished inventor based in Doorn, Netherlands, has made significant contributions to the field of polymer and material science. With a total of three patents to his name, he has focused his research on innovations that enhance the properties and applications of various compositions.
Latest Patents
Waltherus J Sep's most recent patents reflect his expertise in developing unique and beneficial compositions. One notable innovation is a **composition based on an aqueous dispersion of an addition polymer**. This invention centers around an addition polymer derived from one or more olefinically unsaturated monomers, integrated with emulsion stabilizers and/or emulsifiers, along with a specific silicon compound. The polymer features monomer units containing acid groups, employing an epoxysilane characterized by the presence of epoxyalkyl (C1-C4) groups.
Furthermore, he has also patented **unsaturated polyester compositions and their use**, presenting novel curable mixtures that contain unsaturated polyester, reactive copolymerizable monomers, and a paraffin wax as an evaporation-reducing agent. This particular invention also introduces an adhesion promoter that consists of a compound with 10-30 carbon atoms, which can be either alkylaromatic, alkenylaromatic, or alcohol-based.
Career Highlights
Throughout his career, Waltherus J Sep has contributed to the advancement of material science while working with notable organizations. He has served at **International Patent Management 'Octropa' B.V.** and **DSM Resins B.V.**, where his work has been pivotal in the development of innovative polymer solutions.
Collaborations
Waltherus has had the opportunity to collaborate with prominent colleagues including Dick A Pons and Johannes B Van Hout. These collaborations have fostered a productive environment, leading to groundbreaking innovations in the field.
Conclusion
Waltherus J Sep's ongoing work exemplifies the spirit of innovation in polymer technology. His contributions facilitate advancements in various industrial applications, further establishing his reputation as a formidable inventor in the realm of compositions based on aqueous dispersions and unsaturated polyesters.