James Lewis Hohman, Jr

Title: **James Lewis Hohman, Jr.: Innovator in Organic Pigment Technologies**

Introduction

James Lewis Hohman, Jr. is a notable inventor based in Newark, DE, with a remarkable record of ingenuity in the field of organic pigments. With a total of four patents to his name, Hohman's contributions significantly advance the applications and efficiency of pigment technologies.

Latest Patents

Hohman's latest innovations include two patents that demonstrate his expertise in creating self-dispersing pigments. The first patent, titled “Self-dispersing pigment and process of making and use of same,” presents a novel process wherein pigments are oxidated with ozone in an aqueous environment. This innovative method ensures that pigments remain self-dispersing by controlling the pH of the mixture, thus enabling the creation of high-quality inks and coatings.

The second patent, “Method of producing stabilized organic pigment particles and device therefor,” outlines a ground-breaking approach to producing self-dispersible organic pigment particles. By modifying the surface of organic pigments and stabilizing them with an aqueous vapor, Hohman’s method prevents the exothermic reactions that can occur with conventional pigments. This advancement is particularly relevant for applications in ink jet inks, pigmented waterborne and solvent-borne coatings, and powder coating compositions.

Career Highlights

Hohman has made significant contributions to E.I. DuPont de Nemours and Company, where he has been instrumental in developing advancements in pigment technology. His work has led to innovations that improve the performance and application of organic pigments, thus enhancing the overall quality of products in various industries.

Collaborations

Throughout his career, Hohman has collaborated with esteemed colleagues, including An-Gong Yeh and Timothy Allan Bell. These partnerships have facilitated the exchange of ideas and fostered innovation within the field, which continues to benefit the industry as a whole.

Conclusion

James Lewis Hohman, Jr. exemplifies the spirit of innovation through his dedicated efforts in the realm of organic pigments. His patents not only contribute to his company's success but also pave the way for future developments in pigment technology. With ongoing collaboration and a commitment to advancing industry standards, Hohman’s work is likely to inspire further innovations for years to come.