Location History:
- Yokohama, JP (1990 - 1995)
- Hyogo, JP (1996 - 1999)
- Itami, JP (1993 - 2002)
Company Filing History:
35 out of 10,273 
1 out of 35,756 
1 out of 44 Years Active: 1990-2002
Title: **Shin-ichi Shikata: Innovator in Diamond Technology**
Introduction
Shin-ichi Shikata, based in Itami, Japan, is a prominent inventor known for his significant contributions to diamond technology. With an impressive portfolio of 35 patents, Shikata has advanced the field of surface acoustic wave (SAW) devices, enhancing their performance and applications.
Latest Patents
Among his latest innovations, Shikata developed a patent for a diamond wafer and a method of estimating diamond wafers, alongside a groundbreaking diamond surface acoustic wave device. His technique involves examining the surfaces of diamond crystals by coating them with thin metal films and directing laser beams at them at a slanting angle. This method effectively detects defects and particles on the diamond surfaces through the scattering of beams, which are then analyzed using a laser scanning surface defect detection apparatus. The diamond surface acoustic wave devices are designed for diamond films or bulks with a defect density of fewer than 300 particles per cm². Ideally, the roughness of the diamond surfaces should be less than Ra 20 nm. Furthermore, the SAW filters developed can be realized by depositing a piezoelectric film and fabricating interdigital transducers on the low-defect density diamond crystals. His surface-acoustic-wave device boasts a remarkable increase in both the propagation velocity of SAWs and an electromechanical coupling coefficient of 20% or more. This device comprises a diamond substrate, a potassium niobate (KNbO) layer, and interdigital transducers (IDTs), with precise control over the layer thickness and crystal orientation to achieve a propagation velocity of 5,000 m/s or higher.
Career Highlights
Shikata has had a distinguished career working with renowned organizations. He has contributed his expertise while employed at Sumitomo Electric Industries, Limited and NEC Corporation, making significant impacts in the area of advanced diamond technologies.
Collaborations
Throughout his career, Shikata has collaborated with talented colleagues, including Hideaki Nakahata and Satoshi Fujii. Their combined efforts have led to innovations that continue to shape the industry.
Conclusion
Shin-ichi Shikata stands out as a leading inventor in diamond technology. His numerous patents and groundbreaking innovations in surface acoustic wave devices not only highlight his expertise but also contribute to advancements in various applications of diamond materials. His work reflects a commitment to excellence and innovation in the field.