Company Filing History:
6 out of 69 
1 out of 9 Years Active: 1978-1985
Title: Gerhard Stern: Innovator in Chemical Engineering
Introduction
Gerhard Stern is a notable inventor based in Linz, Austria, recognized for his contributions to chemical engineering. With a total of six patents to his name, he has made significant advancements in the field, particularly in the development of specialized chemical processes and materials.
Latest Patents
Among his latest patents is a process for preparing pure diacetonitrile. This innovative method involves reacting acetonitrile and molten sodium at temperatures ranging from 96 to 140 degrees Celsius in the presence of an organic solvent that is inert to sodium. The process results in the formation of the sodium salt of diacetonitrile, which is then hydrolyzed with water, leading to the crystallization of very pure diacetonitrile in cold water. Another significant patent is for a flame-retardant polyacrylonitrile fiber. This fiber is produced through dry spinning and contains at least 85% by weight of acrylonitrile in the parent polymer. It incorporates 15 to 40% by weight of tris-2,3-dibromopropyl isocyanurate as a flame retardant, with the potential for further enhancement through the addition of synergistic compounds.
Career Highlights
Gerhard Stern has had a distinguished career, working with prominent companies such as Chemie Linz Aktiengesellschaft and Chemiefaser Lenz
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.