Location History:
- Ootake, JP (1982)
- Narashino, JP (1982 - 1990)
Company Filing History:
3 out of 630 
2 out of 1,357 
1 out of 2 Years Active: 1982-1990
Title: Sadaaki Shigeta: Innovator in Optical Recording Technology
Introduction
Sadaaki Shigeta is a notable inventor based in Narashino, Japan. He has made significant contributions to the field of optical recording technology, holding a total of 5 patents. His work has focused on enhancing the quality and reliability of optical recording mediums.
Latest Patents
One of his latest patents is for an optical recording medium that features a substrate and a recording film. This recording film primarily consists of tin, with passive state-forming metal layers on both sides. The innovation provides high recording sensitivity, excellent signal quality, and enhanced reliability. The manufacturing process involves forming a first passive state-forming metal layer, a tin film, and a second passive state-forming metal layer sequentially on a substrate, followed by heating the laminate.
Another significant patent is for an apparatus designed for manufacturing optical information recording mediums. This apparatus includes a disk substrate supported by a vertically movable center pin and a table positioned below it. The process involves curing a ring-shaped portion of resin upon exposure to ultraviolet rays, allowing for precise contact and imprinting of records onto the stamper.
Career Highlights
Sadaaki Shigeta has worked with prominent companies such as Dainippon Ink and Chemicals, Incorporated and Mitsubishi Rayon Company, Limited. His experience in these organizations has contributed to his expertise in optical technologies and innovations.
Collaborations
Throughout his career, Shigeta has collaborated with notable individuals, including Hiroshi Sato and Yasuo Takenaka. These partnerships have likely fostered a creative environment that has led to advancements in their respective fields.
Conclusion
Sadaaki Shigeta's contributions to optical recording technology demonstrate his innovative spirit and commitment to enhancing the quality of recording mediums. His patents reflect a deep understanding of materials and manufacturing processes, solidifying his reputation as a leading inventor in this domain.
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.