Location History:
- Oizumi-machi, JP (2004)
- Ora-gun, JP (2005)
- Gunma, JP (2008)
- Ota, JP (2012)
Company Filing History:
3 out of 8,776 
2 out of 3,590 
1 out of 306 Years Active: 2004-2012
Title: Innovator Spotlight: Makoto Oikawa
Introduction: Makoto Oikawa, an accomplished inventor based in Ota, Japan, has made significant contributions to the field of semiconductor technology. With a total of five patents to his name, Oikawa's innovations have had a profound impact on enhancing the performance and reliability of semiconductor devices.
Latest Patents: One of Oikawa's most notable recent patents is for an insulated gate semiconductor device. This invention integrates a diode and a resistor in parallel on the same chip as an IGBT (Insulated Gate Bipolar Transistor). By connecting the cathode of the diode to the gate of the IGBT, Oikawa effectively manages the value of dv/dt within a predetermined range, thus preserving the turn-on characteristics of the device. This design also prevents damage to the IGBT from increased dv/dt at user sites.
Additionally, he has developed a method for manufacturing a semiconductor device that enhances the breakdown voltage. This method involves positioning an n-type impurity region below a gate electrode and ensuring the gate length is shorter than the channel region's depth. The result is a uniform depletion layer that secures a predetermined breakdown voltage, contributing to low on-resistance by increasing the impurity concentration in the n-type impurity region.
Career Highlights: Throughout his career, Oikawa has been associated with prominent companies in the semiconductor industry, including Sanyo Electric Co., Ltd. and Semiconductor Components Industries, LLC. His work in these organizations has significantly influenced advancements in semiconductor design and fabrication.
Collaborations: Oikawa has worked alongside talented engineers and researchers, including Hiroki Etou and Hirotoshi Kubo. Their collaborations have led to innovative solutions and products that enhance the capabilities of semiconductor technologies.
Conclusion: Makoto Oikawa continues to be a vital force in the realm of semiconductor innovations. His patents reflect his dedication to improving technology and fostering advancements that meet the demands of modern electronics. With a commitment to research and development, Oikawa's future contributions are eagerly anticipated by the industry.
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.