Company Filing History:
Years Active: 1978
Title: Innovations by Robert Jarl North
Introduction
Robert Jarl North is an accomplished inventor based in Elmwood Park, NJ (US). He has made significant contributions to the field of chemistry, particularly in the production of gamma quinacridone pigments. With a total of two patents to his name, North's work has implications in various applications, including colorants and materials science.
Latest Patents
North's latest patents include a method for producing gamma quinacridone solid solutions. This process involves ring-closing a mixture of dianilinoterephthalic acid and di(ortho-substituted) anilinoterephthalic acid, along with 4,11-disubstituted quinacridone. The product is then drowned into a water-miscible alcohol containing 1 to 3 carbon atoms. Another notable patent is for the direct production of gamma quinacridone pigment from polyphosphoric acid. This method entails the ring closure of 2,5-dianilinoterephthalic acid in polyphosphoric acid, followed by dilution with a water-miscible alcohol while maintaining a specific temperature range.
Career Highlights
Robert Jarl North is currently associated with Harmon Colors Corporation, where he continues to innovate in the field of color chemistry. His expertise in the production of specialized pigments has positioned him as a valuable asset to the company. North's work not only enhances the product offerings of Harmon Colors Corporation but also contributes to advancements in the industry.
Conclusion
Robert Jarl North's contributions to the field of chemistry through his patents and work at Harmon Colors Corporation highlight his role as a significant inventor. His innovative methods for producing gamma quinacridone pigments demonstrate the impact of his research on material science and colorants.