Location History:
- Ebina, JP (2005)
- Hyogo, JP (1999 - 2006)
- Itami, JP (1993 - 2008)
- Maebashi, JP (2011)
Company Filing History:
11 out of 10,239 
3 out of 11 
2 out of 13,395 
Years Active: 1993-2011
Title: The Innovative Contributions of Hisanori Ohara
Introduction
Hisanori Ohara is a notable inventor from Itami, Japan, recognized for his significant contributions to the field of materials science, specifically in the development of advanced amorphous carbon films. With a total of 15 patents to his name, Ohara's innovations have greatly contributed to the industry.
Latest Patents
Among his latest patents, Ohara has devised a unique hard amorphous carbon film. This innovation consists of a first amorphous carbon layer that primarily comprises carbon, formed on a substrate surface, and a second amorphous carbon layer situated atop the first layer. Notably, when viewed under a transmission electron microscope, the first layer appears brighter than the second when observed in cross-section.
Furthermore, Ohara has patented a process for producing an amorphous carbon film and related materials. This film features a density range of 2.8 to 3.3 g/cm³ and is characterized by a spin density of 1×10⁻¹ spins/cm³. The film ensures a carbon concentration of at least 99.5 atomic percentage, while limiting hydrogen and inert gas element contents to no more than 0.5 atomic percentage. Additionally, it is designed to achieve a Knoop hardness of between 3000 and 7000. Central to this patent is a mixed layer formed from a parent material, alongside selected metals such as B, Ti, and Cr. The amorphous carbon film is applied using sputtering, cathode-arc ion plating, or laser abrasion techniques, which enhances adherence to materials.
Career Highlights
Hisanori Ohara has worked with prestigious companies such as Sumitomo Electric Industries, Limited and Tokyo Tungsten Co., Ltd. His role in these organizations has enabled him to focus on research and development, leading to valuable innovations and patented processes.
Collaborations
Throughout his career, Ohara has collaborated with esteemed colleagues, including Haruyo Fukui and Yoshiharu Utsumi. These partnerships have fostered a collaborative environment that has been pivotal in driving forward numerous advancements and projects.
Conclusion
In summary, Hisanori Ohara's remarkable innovations in amorphous carbon films highlight his role as a key player in the field. With a solid patent portfolio and a history of collaboration with industry professionals, his work continues to influence the landscape of materials science and technology.
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.