This inventor holds 4 USPTO granted patents. Top assignee: Mitsubishi Paper Mills Limited. Active years: 1978-1997.
Location History:
- Nagaokakyo, JP (1978 - 1994)
- Tokyo, JP (1997)
Company Filing History:
Years Active: 1978-1997
Title: Innovations of Tamotu Iwata in Photographic Development
Introduction
Tamotu Iwata is a notable inventor based in Nagaokakyo, Japan. He has made significant contributions to the field of photographic development, holding a total of 4 patents. His work focuses on improving the processes involved in developing silver halide photographic materials.
Latest Patents
Iwata's latest patents include a method for photographic development using a filter to inhibit occurrence. This method discloses a technique for developing silver halide photographic photosensitive materials with a developer containing a sulfite. The developer must contain 20 mol % or more of potassium ion based on the total alkali metal ions, along with 0.04 mol/l or more of bromine ion or a specific compound. This method is particularly effective in processing using an automatic processor, as it effectively inhibits the formation of silver sludges, preventing stains on the rolls and belts of the processors. Another significant patent by Iwata provides a developer for silver halide photographic light-sensitive materials that offers super-high contrast and improved stability over time. This developer includes a developing agent, a hydroquinonemonosulfonate, a sulfite, and an amino compound, with a pH range of 10.5-12.3.
Career Highlights
Tamotu Iwata is currently associated with Mitsubishi Paper Mills Limited, where he continues to innovate in the field of photographic development. His work has been instrumental in enhancing the quality and efficiency of photographic processing.
Collaborations
Iwata has collaborated with notable coworkers, including Shigeru Iguchi and Tetsuo Yano, contributing to advancements in their shared field of expertise.
Conclusion
Tamotu Iwata's contributions to photographic development through his innovative patents have significantly impacted the industry. His work continues to influence the methods used in photographic processing today.