Location History:
- Tokkyo, JP (2005 - 2006)
- Chiyoda-ku, JP (2006 - 2008)
- Tokyo, JP (2004 - 2017)
- Hitachi, JP (2003 - 2018)
Company Filing History:
35 out of 42,485 
3 out of 1,498 
2 out of 2,028 
Years Active: 2003-2018
Title: The Innovative Contributions of Shiro Yamaoka in Hybrid Construction Technology
Introduction: Shiro Yamaoka, a notable inventor based in Hitachi, Japan, has made significant contributions to the field of hybrid work machines and construction technology. With a remarkable portfolio of 40 patents, Yamaoka's innovations are paving the way for advancements in efficient machinery.
Latest Patents: Among Yamaoka's latest inventions are two groundbreaking patents. The first is a **Hybrid Work Machine**, which features an engine controller that regulates the engine's rotational speed based on input from an electronic control dial. The design includes an assist motor that generates electricity from the engine's power and a hydraulic pump that can operate using either the engine or the assist motor’s power. Furthermore, it incorporates a vehicle body controller that estimates the required engine output when generating electricity, ensuring optimal performance by adhering to a predefined electricity generation threshold value.
The second notable patent is a **Construction Machine** that integrates an internal combustion engine modulated by a torque command along with an electric motor. This machine operates a hydraulic pressure generator utilizing both the internal combustion engine and the electric motor, with a distinctive speed control device and a torque limiter that further enhances its operational efficiency.
Career Highlights: Shiro Yamaoka has had an illustrious career at leading companies, including Hitachi and Hitachi Construction Machinery Co., Ltd. His tenure in these organizations has allowed him to develop and refine his technological innovations that contribute significantly to modern construction equipment.
Collaborations: Throughout his career, Yamaoka has collaborated with esteemed colleagues, including Hiromu Kakuya and Yoshihiro Sukegawa. These collaborations exemplify the teamwork and shared vision necessary for advancing technology in the construction field.
Conclusion: Shiro Yamaoka’s contributions to innovation in hybrid work machinery and construction technology illustrate a commitment to efficiency and progress. His achievements, represented by a substantial number of patents, not only highlight his inventive prowess but also underscore the importance of continuous innovation in the evolving landscape of construction and machinery.
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.