Company Filing History:
Years Active: 1976-1989
Title: The Innovative Journey of Matthias Schellenberg
Introduction
Matthias Schellenberg, an inventive mind based in Marly, Switzerland, has made significant contributions to the field of photography through his innovative patents. With a total of 9 patents to his name, Schellenberg's work primarily focuses on advancements in photographic materials and processes, leading to enhanced methods in the silver dye bleach process.
Latest Patents
Among his latest innovations, Schellenberg has developed two notable patents:
1. **Photographic material for the silver dye bleach process** - This invention introduces a photographic material which incorporates, in at least one layer, a colloidal dispersion of azo in gelatine, with a specific ratio of azo dye to gelatine ranging from 1:1 to 1:10.
2. **Use of tertiary phosphines in photographic silver dye bleach materials** - In this patent, Schellenberg details a method for processing photographic silver dye bleach materials that have been exposed imagewise. The process involves several steps: (1) silver developing, (2) dye bleaching, (3) silver bleaching, and (4) fixing. The treatment baths for certain process steps contain water-soluble tertiary phosphines as silver ligands, which contribute to the acceleration of the dye and silver bleaching and serve as stabilizers and antioxidants for a stable treatment.
Career Highlights
Matthias Schellenberg currently works at Ciba-Geigy AG, where he continues to push the boundaries of photographic technology. His innovative patents have paved the way for advancements in photographic materials that enhance image quality and processing efficiency.
Collaborations
Throughout his career, Schellenberg has collaborated with notable colleagues such as Christoph Chylewski and Max Meier. Together, they have combined their expertise to further enhance the technological landscape of photographic materials.
Conclusion
Matthias Schellenberg stands out as a remarkable inventor in the field of photography. His patents not only reflect his innovative spirit but also contribute significantly to the evolution of photographic processes. As he continues to work at Ciba-Geigy AG, his contributions will undoubtedly shape the future of photography.