Location History:
- Neyagawa, JP (1982)
- Osaka, JP (1998 - 2009)
- Hirakata, JP (2007 - 2010)
Company Filing History:
4 out of 16,453 
3 out of 27,375 
Years Active: 1982-2010
Title: Tsutomu Hamada: Innovator in Hydrodynamic Bearing Technology
Introduction
Tsutomu Hamada is a prominent inventor based in Hirakata, Japan. He has made significant contributions to the field of engineering, particularly in the development of hydrodynamic bearing devices. With a total of 7 patents to his name, Hamada's work has had a lasting impact on various industries.
Latest Patents
Hamada's latest patents include innovative designs for hydrodynamic bearing devices. One notable invention is a hydrodynamic bearing device designed for use with spindle motors. This device features a sleeve made of sintered metal, which is created by sintering materials such as iron, iron alloys, copper, and copper alloys. The unique design includes independent pores that do not communicate with each other, achieved by carefully selecting conditions for forming the sintered body. These conditions encompass grain size, molding pressure, sintering temperature, and sintering duration. Another significant patent involves a hydrodynamic bearing device that includes a sleeve, a shaft, and oil. This design allows for relative rotation between the shaft and the sleeve, with dynamic pressure generation grooves formed in the inner peripheral face of the sleeve.
Career Highlights
Throughout his career, Tsutomu Hamada has worked with notable companies, including Panasonic Corporation and Matsushita Electric Industrial Co., Ltd. His experience in these organizations has contributed to his expertise in the field of hydrodynamic bearings and motor technology.
Collaborations
Hamada has collaborated with several talented individuals in his field, including Takafumi Asada and Hideaki Ohno. These collaborations have fostered innovation and advancement in the technologies he has developed.
Conclusion
Tsutomu Hamada's contributions to hydrodynamic bearing technology exemplify his dedication to innovation and engineering excellence. His patents and collaborations continue to influence the industry, showcasing the importance of his work in advancing 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.