Rolf S Gabrielsen

Title: Rolf S. Gabrielsen: Innovator in Photographic Materials

Introduction

Rolf S. Gabrielsen is a notable inventor based in Webster, NY (US), recognized for his contributions to the field of photographic materials. With a total of nine patents to his name, Gabrielsen has made significant advancements in imaging technologies.

Latest Patents

Among his latest patents, one focuses on dye precursors and their use in photographic materials and processes. This invention involves a diphenylamine compound that serves as a precursor for a phenazine dye. The compound features a sulfonyldiamido group in an ortho position to the amine, which can release a sulfonylamine fragment upon oxidation. This process allows the diphenylamine compound to intramolecularly cyclize into a phenazine dye. The released sulfonylamine fragment can thermally release ammonia or an amine, which is beneficial for imaging materials responsive to these substances. Additionally, the diphenylamine compound acts as a silver halide developing agent. Another significant patent involves a color-forming sulfonamidodiphenylamine dye precursor, which has sulfonamido groups positioned in relation to the --NH-- moiety. This precursor can produce a sulfonamido-substituted phenazine dye through intramolecular reactions, making it useful for creating dye images in imaging materials.

Career Highlights

Rolf S. Gabrielsen has spent a considerable part of his career at Eastman Kodak Company, where he has been instrumental in developing innovative photographic technologies. His work has not only advanced the field but has also contributed to the company's reputation as a leader in imaging solutions.

Collaborations

Throughout his career, Gabrielsen has collaborated with several talented individuals, including Patricia A. Graham and James E. Klijanowicz. These collaborations have fostered a creative environment that has led to numerous advancements in photographic materials.

Conclusion

Rolf S. Gabrielsen's contributions to the field of photographic materials through his innovative patents and collaborations highlight his significant role as an inventor. His work continues to influence the imaging industry and showcases the importance of innovation in technology.