This inventor holds 3 USPTO granted patents and 1 EPO patent. Top assignees: Kabushiki Kaisha Toshiba, Tokyo Shibaura Denki Kabushiki Kaisha. Active years: 1984-2013.
Location History:
- Tokyo, JP (1984)
- Ichinomiya, JP (1991 - 2013)
Company Filing History:
2 out of 53,240 
1 out of 2,916 
Years Active: 1984-2013
Title: The Innovations of Yukihiko Hatano
Introduction
Yukihiko Hatano is a notable inventor based in Ichinomiya, Japan. He has made significant contributions to the field of electrical engineering, particularly in the development of inverter apparatuses and phase detection devices. With a total of 3 patents to his name, Hatano's work reflects a deep understanding of electrical systems and their applications.
Latest Patents
One of Hatano's latest patents is an inverter apparatus that includes switching elements and freewheel diodes connected to a direct-current power supply. This innovative device features a temperature detector located near at least one of the switching elements, along with a temperature estimation unit. The temperature estimation unit is designed to estimate the temperatures of switching elements that do not have a temperature detector, based on a calculated estimated-temperature increase value derived from a loss model of the switching elements and freewheel diode.
Another significant patent is the opposite phase detecting device for alternating current electrical equipment. This device includes a zero cross circuit that synchronizes the positive half waves of first and second line voltages from a three-phase AC supply. It generates synchronizing pulses that correspond to an electrical angle of approximately 180 degrees. The device also features a counter circuit that counts these synchronizing pulses and generates an opposite phase detection signal when the count reaches a predetermined value.
Career Highlights
Throughout his career, Yukihiko Hatano has worked with prominent companies such as Toshiba Corporation and Tokyo Shibaura Denki Corporation. His experience in these organizations has undoubtedly contributed to his expertise and innovative capabilities in the field of electrical engineering.
Collaborations
Hatano has collaborated with notable colleagues, including Ryuta Hasegawa and Tadashi Takahashi. These partnerships have likely fostered a creative environment that has led to the development of his innovative patents.
Conclusion
Yukihiko Hatano's contributions to electrical engineering through his patents demonstrate his commitment to innovation and excellence. His work continues to influence the field and inspire future advancements in technology.