Location History:
- Chiba, JP (2013)
- Ichihara, JP (1991 - 2014)
Company Filing History:
Years Active: 1991-2014
Title: Shigeo Hara: Innovator in Grease and Gear Oil Composition
Introduction
Shigeo Hara is an accomplished inventor hailing from Ichihara, Japan. With a total of four patents to his name, Hara has significantly contributed to the field of lubricant technology, particularly in grease and gear oil compositions. His innovations reflect a dedication to enhancing performance and efficiency in mechanical applications.
Latest Patents
Hara's latest patents include a unique grease composition designed for direct-acting devices. This composition features a poly-α-olefin with a kinematic viscosity ranging from 60 to 320 mm/s at 40 degrees Celsius. The formulation comprises 50 mass % or more of the poly-α-olefin, a thickener that is a lithium salt of a hydroxyl-free fatty acid with 10 to 22 carbon atoms, and an ashless dithiocarbamate and/or zinc dithiocarbamate, contained in an amount of 0.1 to 1.5 mass % in terms of sulfur. Notably, the grease composition maintains a phosphorus content of 0.05 mass % or less, with a worked penetration ranging from 265 to 310.
In addition to this, Hara also holds a patent for a gear oil composition that aims to improve transmission efficiency. This composition includes a base oil compounded with an ashless dithiocarbamate compound and an ester of pentaerythritol and branched fatty acids. The ester possesses a hydroxyl value of 20 to 100 mg KOH/g, providing the gear oil with enhanced resistance to sludge formation and excellent extreme pressure properties.
Career Highlights
Hara is currently engaged with Idemitsu Kosan Company, Limited, where he continues to lead innovative projects in lubricant technology. His work is crucial in addressing industry demands for superior lubrication solutions that enhance both performance and environmental sustainability.
Collaborations
Throughout his career, Hara has collaborated with notable colleagues in the field, including Saburo Koyama and Seiichi Shido. These partnerships have fostered a collaborative environment that encourages innovation and the development of groundbreaking lubricant technologies.
Conclusion
Shigeo Hara stands out as a pioneering inventor whose contributions in grease and gear oil compositions reflect a commitment to excellence in lubricant technology. With his patents, he has paved the way for advancements that enhance the efficiency and performance of mechanical devices, making a lasting impact in the industry.
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.