Location History:
- Toyoake, JP (1996 - 1999)
- Kariva, JP (2001)
- Kariya, JP (1989 - 2007)
Company Filing History:
7 out of 19,769 
4 out of 3,252 
1 out of 1,140 
Years Active: 1989-2007
Title: The Innovative Contributions of Makoto Ohkawa
Introduction
Makoto Ohkawa is a prominent inventor based in Kariya, Japan. He has made significant contributions to the field of semiconductor technology, holding a total of 11 patents. His work has advanced the methods and devices used in semiconductor manufacturing, showcasing his expertise and innovative spirit.
Latest Patents
Ohkawa's latest patents include a semiconductor device and cutting equipment specifically designed for cutting semiconductor devices. One notable method he developed involves cutting a semiconductor device that consists of a first semiconductor layer, an insulation layer, and a second semiconductor layer. This method includes several steps, such as forming a semiconductor part in the first semiconductor layer and irradiating a laser beam on its surface. The device is then cut into a semiconductor chip using the laser beam, which is reflected at various interfaces to generate reflected beams. The insulation film's thickness is carefully determined to weaken the interaction between the reflected beams, enhancing the cutting process.
Another significant patent involves a method of etching a metallic thin film on a thin film resistor. In this process, an aluminum film is formed on a barrier metal covering a thin film resistor, creating a first opening. A photo-resist is then applied and patterned to form a second opening, which is smaller than the first. This innovative approach prevents under-cutting of the barrier metal during the etching process, ensuring precision and efficiency.
Career Highlights
Throughout his career, Makoto Ohkawa has worked with notable companies such as Denso Corporation and Nippondenso Co., Ltd. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking advancements in semiconductor technology.
Collaborations
Ohkawa has collaborated with esteemed colleagues, including Satoshi Shiraki and Makio Iida. These partnerships have fostered a creative environment that has led to the development of innovative solutions in the semiconductor field.
Conclusion
Makoto Ohkawa's contributions to semiconductor technology through his patents and collaborations highlight his role as a leading inventor in the industry. His innovative methods and devices continue to influence the field, paving the way for future advancements.