Location History:
- Ichinomiya, JP (1998 - 2000)
- Gifu, JP (1999 - 2013)
Company Filing History:
4 out of 19,697 
4 out of 1,138 
3 out of 36,499 
Years Active: 1998-2013
Title: Hiroo Fuma: Innovator in Vehicle-Mounted Technology
Introduction
Hiroo Fuma is a notable inventor based in Gifu, Japan. He has made significant contributions to the field of vehicle-mounted technology, holding a total of 10 patents. His work focuses on enhancing the efficiency and miniaturization of vehicle-mounted converters.
Latest Patents
One of his latest patents is a "Vehicle-mounted multi-phase converter and design method thereof." This invention aims to miniaturize booster coils used in vehicle-mounted booster converters. The design method involves multiple booster coils and a switching circuit that generates an induced electromotive force at each booster coil. This is achieved by switching the current flowing to each booster coil, which applies an output voltage to a vehicle drive circuit based on the input voltage and the induced electromotive force. The coupling factor, which indicates how much the induced electromotive force in one booster coil contributes to the voltage between terminals of another booster coil, is determined based on the relationship between the coupling factor and the current ripple component of each booster coil.
Another significant patent is the "Vehicle mounted converter." This invention also focuses on miniaturizing device size in a vehicle-mounted converter. It includes multiple inductors, a switching unit for current path switching, and an external power acquisition unit that acquires alternating current power from a separate power generation source. The switching means allows for a connection state to either a boost connection state or a charging connection state, optimizing the vehicle's power supply system.
Career Highlights
Hiroo Fuma has worked with prominent companies such as Denso Corporation and Toyota Chuo Kenkyusho. His experience in these organizations has contributed to his expertise in vehicle technology and innovation.
Collaborations
He has collaborated with notable coworkers, including Takeshi Miyajima and Norihito Tokura. Their combined efforts have further advanced the field of vehicle-mounted technology.
Conclusion
Hiroo Fuma's innovative work in vehicle-mounted technology has led to significant advancements in the efficiency and design of power converters. His contributions continue to influence the automotive industry and enhance vehicle performance.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.