Company Filing History:
4 out of 10 
2 out of 61 
2 out of 5 Years Active: 1992
Title: Hitoshi Yoshioka - Innovator in Power Supply Technologies
Introduction
Hitoshi Yoshioka is a prolific inventor based in Kawasaki, Japan, known for his significant contributions to power supply technologies. With a total of four patents to his name, Yoshioka has developed innovative solutions that enhance the functionality and efficiency of various systems, particularly in microwave ovens and DC-DC converters.
Latest Patents
Yoshioka’s latest inventions highlight his expertise in electrical engineering. One of his notable patents is a **Switching Power Supply for Microwave Oven**. This invention relates to a switching power supply design that efficiently converts DC power into a pulse form, enabling the effective operation of high-frequency oscillators, known as magnetrons, in microwave ovens. The design includes a clever mechanism that sets a reference voltage lower than the ordinary state until the magnetron oscillation initiates, thus optimizing the power supplied throughout the process.
Another significant patent is his **DC-DC Converter**. This device features a transformer with a primary winding connected to a DC power source, complemented by a rectifier and smoothing circuit. This design is notable for its dual switching circuits, enabling a sophisticated on/off control through a signal generating circuit. This innovative configuration enhances the efficiency of energy conversion, representing a key advancement in power supply technology.
Career Highlights
Throughout his career, Yoshioka has worked with reputable companies, including Yutaka Electric Manufacturing Co., Ltd. and Toko Kabushiki Kaisha. His experience at these firms has undoubtedly contributed to his proficiency in developing cutting-edge electrical solutions.
Collaborations
Yoshioka has collaborated with notable professionals in his field, including Shigeru Kameyama and Koji Arakawa. These collaborations have likely enriched his work, fostering a creative environment conducive to innovation.
Conclusion
In summary, Hitoshi Yoshioka’s contributions to the field of power supply technologies are noteworthy. With his innovative designs and patents, he continues to influence developments in electrical engineering. His work stands as a testament to the impact of dedicated inventors in driving technological advancements.