This inventor holds 49 USPTO granted patents and 2 published patent applications, plus 5 CIPO patents and 3 EPO patents, primarily in Image Forming Apparatus. Top assignees: Ricoh Company, Ltd., Fujitsu Corporation, Bridgestone Tire Company Limited. Active years: 1981-2021.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Toyko, JP (1992)
- Yokohama, JP (1993 - 1995)
- Kawasaki, JP (1981 - 1998)
- Tokyo-to, JP (2005)
- Haga-gun, JP (2007)
- Utsunomiya, JP (1992 - 2013)
- Hachioji, JP (2019)
- Tokyo, JP (1987 - 2021)
Company Filing History:
34 out of 28,940 
6 out of 39,374 
3 out of 504 
Years Active: 1981-2021
Areas of Expertise:
Title: Innovations by Yoshihiro Sakai: A Mastermind in Sewing Technology
Introduction: Yoshihiro Sakai is a prominent inventor based in Tokyo, Japan, known for his innovative contributions to the sewing machine industry. With a remarkable total of 45 patents to his name, Sakai has made significant advancements that enhance the functionality and efficiency of sewing machines.
Latest Patents: Among his latest inventions are two notable patents: the first is a sewing machine needle plate attaching/detaching mechanism designed to simplify the process of fixing and releasing the needle plate. This mechanism features a needle plate fixing portion that can be rotated between fixed and non-fixed positions, alongside a driving gear and a switchable transmission mechanism for seamless operation. The second patent is a foot controller designed to enhance user flexibility during operation. This controller includes a pedal portion, a pedal stand, and a speed control member, which work together to regulate the sewing machine's operation speed effectively. Notably, the controller also incorporates a depression suppression member to manage abrupt changes in speed.
Career Highlights: Over the years, Yoshihiro Sakai has held significant positions at leading companies, notably Ricoh Company, Ltd., and Fujitsu Corporation. His tenure at these organizations allowed him to develop and refine his innovative ideas, contributing to advancements in sewing technology.
Collaborations: Throughout his career, Sakai has worked alongside notable individuals, including Hideya Furuta and Mitsuru Mamizuka. Their collaboration has undoubtedly enriched his inventive process, fostering an environment of creativity and technological advancements.
Conclusion: Yoshihiro Sakai's contributions to the sewing machine industry are remarkable, reflected in his 45 patents that embody innovation and improved functionality. His work, supported by his experiences at prestigious companies and collaboration with esteemed colleagues, continues to influence the realm of sewing technology, paving the way for future advancements.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile