Location History:
- Yokohama, JP (1983 - 1984)
- Tokyo, JP (1986 - 1990)
Company Filing History:
3 out of 2,916 
2 out of 52,766 
Years Active: 1983-1990
Title: Masakatsu Haga: Pioneer of Semiconductor Protection and Fluorescent Lamp Innovations
Introduction
Masakatsu Haga, a prominent inventor based in Tokyo, Japan, has made significant contributions to the fields of semiconductor technology and lighting solutions. With a total of five patents to his name, Haga has established himself as a leading figure in innovation, demonstrating a commitment to improving electronic devices and their applications.
Latest Patents
One of Haga’s notable inventions is a protection circuit for a semiconductor device. This circuit is designed to connect in series with the power semiconductor device that requires protection. It features a circuit breaker and a current-limiting device, which work together to limit overcurrent and provide a time allowance for the circuit breaker to engage.
Additionally, Haga has developed a method of manufacturing a low-melting point alloy for sealing in fluorescent lamps. This method involves melting an amalgam of tin, lead, bismuth, indium, and mercury, which is then discharged through a nozzle to contact a coolant. This innovative approach enhances the efficiency and reliability of fluorescent lamps using the created amalgam.
Career Highlights
Throughout his career, Masakatsu Haga has contributed to various prestigious companies, including Tokyo Shibaura Denki and Toshiba Corporation. His work at these companies has facilitated advancements in electronic device functionality and increased product safety standards.
Collaborations
Haga has worked alongside talented colleagues, including Koichiro Inomata and Michio Hasegawa. Their collaborative efforts have played a crucial role in the advancement of technology and the successful development of Haga's patents.
Conclusion
With his innovative spirit and dedication to enhancing technology, Masakatsu Haga continues to make strides in the fields of semiconductor protection and lighting solutions. His patents not only reflect his ingenuity but also contribute to the ongoing evolution of modern electronics and lighting systems.