Company Filing History:
Years Active: 1979
Title: Paul-Henri Voisin: Innovator in Photographic Technology
Introduction
Paul-Henri Voisin is a notable inventor based in San Mateo, California. He is recognized for his innovative contributions to photographic technology, particularly in the realm of duplication-proof photographic film. His work has paved the way for advancements in how images are captured and preserved.
Latest Patents
Voisin holds a patent for a unique photographic element designed to prevent duplication by contact copying with actinic light. This invention is formed from a synthetic organic polymer that has nitrogen gas permeability suitable for use as a vehicle in a vesicular film. The light-sensitive diazotype composition dispersed within this film includes a light decomposable diazonium salt and a coupler for forming a dye. Upon image-wise exposure and development, the light-struck areas are vesiculated, resulting in the formation of an azo dye in the nonlight-struck areas. The contrast provided by the vesicules relative to the azo dye is sufficient for viewing by projected light but inadequate for contact copying with UV light.
Career Highlights
Voisin is currently associated with Xidex Corporation, where he continues to innovate in the field of photographic technology. His work has significantly impacted the industry, particularly in enhancing the security and integrity of photographic images.
Collaborations
One of his notable coworkers is Michael F Mizianty, with whom he has collaborated on various projects within the company.
Conclusion
Paul-Henri Voisin's contributions to photographic technology exemplify the spirit of innovation. His patent for duplication-proof photographic film showcases his commitment to advancing the field and ensuring the integrity of photographic images.