Location History:
- Sodegaura, JP (1994 - 1999)
- Ichiharashi, JP (1999)
- Ichihara, JP (2012 - 2015)
- Tokyo, JP (2016)
- Chiba, JP (1999 - 2023)
Company Filing History:
11 out of 2,269 
4 out of 555 
2 out of 10 Years Active: 1994-2023
Title: Innovator Akihiro Shishikura: Pioneering Grease Composition Patents
Introduction
Akihiro Shishikura, an accomplished inventor based in Chiba, Japan, has made significant contributions to the field of lubrication technology. With a remarkable portfolio of 15 patents, he has focused primarily on the development of innovative grease compositions that enhance the performance of mechanical components.
Latest Patents
Among his most notable patents is a grease composition designed for use in speed reducers and speed increasers. This invention boasts exceptional torque transmission efficiency and leak prevention performance. The grease comprises a base oil and a urea-based thickener, with specific particle requirements that ensure optimal performance. One requirement is that the area-based arithmetic average particle diameter of the urea-based thickener particles is 2.0 µm or less, measured using a laser diffraction/scattering method. Another significant patent pertains to a grease composition that delivers excellent durability for bearings used in high-speed rotation conditions, where the DN value exceeds 100,000. Similar to the first, it consists of a base oil and a urea-based thickener, adhering to the particle diameter requirement to maintain high performance under demanding conditions.
Career Highlights
Shishikura’s career includes essential roles at respected companies such as Idemitsu Kosan Company, Limited and Idemitsu Petrochemical Co., Ltd. His work has had a lasting impact on the lubrication industry, with ongoing applications in various mechanical systems that require reliable and efficient grease to maximize their performance.
Collaborations
Throughout his career, Akihiro Shishikura has collaborated with other industry experts, including Noriyuki Kunishi and Hiroaki Motegi. These partnerships have not only enriched his research but have also facilitated the advancement of lubrication technologies in his field.
Conclusion
Akihiro Shishikura’s dedication to innovation in grease compositions has led him to achieve numerous patents that significantly improve mechanical efficiency and reliability. His contributions continue to shape the lubrication technology landscape, ensuring that machines operate smoothly and effectively across various applications.
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.