Location History:
- Joyo, JP (1994)
- Shiga, JP (2002)
Company Filing History:
Years Active: 1994-2002
Title: Innovations of Hidehisa Nishigaki
Introduction
Hidehisa Nishigaki is a notable inventor based in Shiga, Japan. He has made significant contributions to the field of atomic absorption spectrophotometry. With a total of 2 patents, his work has advanced the technology used in analytical chemistry.
Latest Patents
Nishigaki's latest patents include a flame-type atomic absorption spectrophotometer and an atomic absorption spectroscopic analytic apparatus. The flame-type atomic absorption spectrophotometer innovatively forms a flame by igniting a mixture of a fuel gas and a first combustion support gas, such as air. This first combustion support gas is then replaced by a second combustion support gas, like nitrous oxide, which has a faster combustion speed. An optical sensor is strategically placed near the flame to detect the quantity of light emitted. Additionally, a gas flow rate control device independently manages the flow rates of the fuel gas and both combustion support gases. The combustion control unit switches the gas supplied to the flame based on the changes in light quantity detected by the optical sensor.
The atomic absorption spectroscopic analytic apparatus features a sample injector connected to a flame-type atomizing means. It includes a flameless type atomizing means mounted ahead of a burner head. This design allows for the injection of samples into either type of atomizing means using a common auto-sampler, facilitating a seamless transition between the flame system and the flameless system.
Career Highlights
Nishigaki is currently associated with Shimadzu Corporation, a leading company in analytical and measuring instruments. His work has been instrumental in enhancing the capabilities of spectrophotometric analysis.
Collaborations
One of his notable coworkers is Kikuo Sasaki, with whom he has collaborated on various projects.
Conclusion
Hidehisa Nishigaki's contributions to atomic absorption spectrophotometry reflect his innovative spirit and dedication to advancing analytical technology. His patents continue to influence the field and improve analytical methods used in laboratories worldwide.
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