Inventors with similar research interests:
Location History:
- Zama City, JP (1992)
- Chiba, JP (1992 - 1994)
- Matsudo, JP (1995)
- Shizuoka-ken, JP (1999)
- Atsugi, JP (1998 - 2003)
- Ojima-machi, JP (2007)
- Ohi-machi, JP (2009)
- Kanagawa-ken, JP (1998 - 2010)
- Yokohama, JP (1990 - 2015)
- Kanagawa, JP (1992 - 2018)
- Ebina, JP (2007 - 2018)
- Zama, JP (1999 - 2019)
Company Filing History:
22 out of 746 
16 out of 28,544 
6 out of 58,129 
Years Active: 1990-2019
Title: The Innovative Mind of Hiroshi Yokoyama: A Journey Through Patents and Inventions
Introduction: Hiroshi Yokoyama, an esteemed inventor based in Kanagawa, Japan, has made significant contributions to the field of engineering and technology through his remarkable 55 patents. His innovative spirit and relentless pursuit of advancements are evident in the groundbreaking inventions he has introduced, particularly in the realms of injection apparatus and molding machines.
Latest Patents: Among Yokoyama's most recent patents is an innovative injection apparatus and molding machine. This invention features an injection cylinder that can be connected with a plunger, where the internal portion of the cylinder is divided by a piston into two chambers. The rod-side chamber is positioned beside the piston rod, while the head-side chamber faces the opposite side. An accumulator is integrated to supply hydraulic fluid to the head-side chamber, and a head-use pressure sensor plays a critical role in detecting the pressure within this chamber. Additionally, a flow control valve manages the flow rate of hydraulic fluid discharged from the rod-side chamber. The control device involved is sophisticated, utilizing an OP control part that initiates the open control driving of the flow control valve based on the detection pressure from the head-use pressure sensor, ensuring optimal functionality.
Another significant development by Yokoyama involves a flow rate control valve which forms part of a meter-out circuit in an injection cylinder. This overlap type valve operates by allowing a first port to start to open via a spool in the overlapping range. The control device he designed holds a characteristic table that connects the command values of control commands to the flow rate control valve alongside the velocity of the plunger. This innovation effectively enables precise adjustments to the plunger's movement, even accommodating for variations in flow that may occur due to gaps, thereby enhancing overall operational efficiency.
Career Highlights: Hiroshi Yokoyama has had an impressive career, developing technologies that improve manufacturing processes. He has contributed his expertise while working at reputable companies such as Toshiba Kikai Kabushiki Kaisha and Ricoh Company, Ltd. His influence in these organizations has been pivotal in driving forward innovative engineering solutions.
Collaborations: Throughout his career, Yokoyama has collaborated with talented individuals including colleagues Makoto Tsuji and Shinya Itani. These partnerships have fostered a creative environment, enabling the exchange of ideas that have led to numerous successful innovations.
Conclusion: Hiroshi Yokoyama stands as a notable figure in the landscape of innovation, bringing forth advancements that bolster industrial capabilities. His 55 patents reflect his dedication to enhancing engineering practices and his commitment to excellence in design and function. As technology continues to evolve, Yokoyama's contributions will undoubtedly influence future developments in manufacturing and engineering.
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.