Location History:
- Hyogo, JP (2001)
- Saitama, JP (2005)
- Miyagi, JP (2006 - 2023)
- Tokyo, JP (1994 - 2024)
Company Filing History:
27 out of 58,129 
9 out of 3,416 
2 out of 21,351 
Years Active: 1994-2025
Title: Noboru Sekiguchi - Innovator in Magnetic Recording Technologies
Introduction
Noboru Sekiguchi is a distinguished inventor based in Miyagi, Japan, known for his substantial contributions to the field of magnetic recording technologies. With a remarkable portfolio of 37 patents, Sekiguchi has established himself as a significant figure in the innovative landscape of magnetic media.
Latest Patents
Among his latest inventions is a novel magnetic recording medium characterized by a unique structure comprising a substrate, an underlayer, and a magnetic layer. This tape-shaped medium is designed with a substrate made of polyester. Both the underlayer and magnetic layer incorporate lubricants, while the magnetic layer features a surface with numerous holes. Notably, the arithmetic average roughness (Ra) of the surface measures 2.5 nm or less. Additionally, the entire magnetic recording medium exhibits a BET specific surface area ranging from 3.5 m²/g to 7.0 m²/g. The innovation also includes a squareness ratio in the magnetic layer of 65% or more and an average thickness of 80 nm or less, ensuring high performance in magnetic data storage.
Another significant patent relates to a magnetic recording medium that integrates a servo band for recording servo signals. This technology utilizes an index described by specific peak-to-peak values observed through magnetic force microscopy, achieving an index of 0.42 or more. This advancement enhances the efficiency and reliability of data retrieval within magnetic recording systems.
Career Highlights
Noboru Sekiguchi's career features impressive tenures at notable companies such as Sony Corporation and Sony Group Corporation. His expertise and innovation in magnetic recording technologies have played a pivotal role in advancing the corporate objectives of these leading tech giants.
Collaborations
Throughout his career, Sekiguchi has worked alongside notable colleagues, including Minoru Yamaga and Tomoe Ozaki. Their collaborative efforts have contributed to the development of cutting-edge technologies in magnetic recording media, further solidifying their collective impact in the field.
Conclusion
Noboru Sekiguchi's legacy as an inventor is marked by his significant advancements in magnetic recording technologies. With 37 patents to his name, his innovative work continues to influence the industries reliant on high-performance magnetic media. His ongoing pursuit of excellence exemplifies the essence of inventive spirit and technological progress.
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.