Location History:
- Yokohoma, JP (1982)
- Nihonbashi, JP (2000)
- Chiba, JP (2000 - 2002)
- Yokohama, JP (1980 - 2003)
- Tokyo, JP (2001 - 2003)
Company Filing History:
21 out of 42,485 
6 out of 7,952 
2 out of 153 
Years Active: 1980-2003
Title: A Glimpse into the Innovations of Hitoshi Oka
Introduction
Hitoshi Oka, a prominent inventor based in Tokyo, Japan, has made significant contributions to the field of technology with an impressive portfolio of 32 patents. His work primarily focuses on advanced materials and cleaning technologies, demonstrating a commitment to innovation that caters to the evolving demands of modern industries.
Latest Patents
Among Hitoshi Oka's latest patents is his work on piezoelectric ceramics. These innovative materials include a bismuth layer compound containing elements such as M (representing at least one element selected from strontium, barium, and calcium), bismuth (Bi), titanium (Ti), lanthanides (Ln), and oxygen (O). The unique design of these piezoelectric ceramics includes M Bi Ti O typed crystals with a specific mole ratio of Ln/(Ln+M) falling between 0 and 0.5. Particularly when M is strontium, he specifies a mole ratio of 4Bi/Ti within the precise limits of 4.000 to 4.030. Furthermore, this patent proposes the addition of yttrium oxide to enhance the performance of the ceramics.
Another notable invention is a cleaning apparatus designed for plate-like parts, such as wafers. This cleaning technology is crucial for minimizing contamination, damage, and uneven processing during cleaning while the part is in rotation. The inventors detail a configuration where chuck pins made from a resin material containing carbon powders oppose the plate-like part, with a desired potential difference applied through a voltage control unit, effectively ensuring a cleaner and safer process.
Career Highlights
Hitoshi Oka has had an illustrious career, working with esteemed companies such as Hitachi, Ltd. and TDK Corporation. His experiences in these leading technology firms have played a vital role in shaping his innovative mindset and technical abilities, allowing him to contribute effectively to the field of material sciences.
Collaborations
Throughout his career, Oka has collaborated with notable colleagues such as Hiroshi Kikuchi and Isamu Tanaka. Their combined expertise in various engineering disciplines has fostered a spirit of innovation and teamwork that has undoubtedly led to the development of groundbreaking technologies in their respective fields.
Conclusion
With an extensive array of patents and a commitment to research and development, Hitoshi Oka stands out as a significant contributor to the world of technology and innovation. His groundbreaking inventions in piezoelectric ceramics and advanced cleaning systems continue to impact various industries, reflecting his dedication to enhancing product performance and manufacturing processes.
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.