This inventor holds 37 USPTO granted patents and 5 published patent applications and 17 EPO patents, primarily in Hydraulic Construction Machinery. Top assignees: Hitachi Construction Machinery Tierra Co., Ltd., Panasonic Corporation, Kyocera Document Solutions Inc.. Active years: 1992-2025.
Location History:
- Gunma, JP (1992)
- Oyama, JP (2006)
- Tochigi, JP (2006 - 2012)
- Fukaya, JP (2011 - 2013)
- Osaka, JP (2009 - 2019)
- Shiga, JP (2014 - 2023)
- Hino-cho, JP (2021 - 2024)
Company Filing History:
12 out of 59 
7 out of 16,454 
4 out of 6,310 
Years Active: 1992-2025
Areas of Expertise:
Title: **The Innovative Contributions of Takeshi Ishii in Construction Machinery**
Introduction
Takeshi Ishii is a prominent inventor based in Hinocho, Japan, recognized for his significant contributions to the field of construction machinery. With an impressive portfolio of 35 patents, his innovations focus on enhancing energy efficiency and optimizing the operation of electrically driven construction equipment.
Latest Patents
Takeshi Ishii's latest patent innovations include a groundbreaking construction machine designed to perform power reduction control during non-operation of control levers. This technology allows for the suppression of power consumption from the power source, particularly preventing energy waste when a control lever is unintentionally moved. The controller in this invention executes power reduction control if a non-operation state persists beyond a designated time after the transition from an active to a non-active lever state. Furthermore, another notable invention is his electrically driven construction machine, capable of managing simultaneous operations of multiple machines without exceeding the allowable electric power from the commercial supply. This innovation includes a controller that calculates the necessary power for hydraulic actuators while ensuring the electric motor operates within permitted limits.
Career Highlights
Takeshi Ishii has worked with notable companies, including Hitachi Construction Machinery Tierra Co., Ltd. and Panasonic Corporation. His experience in these organizations has significantly influenced his innovative journey, allowing him to apply his expertise to real-world applications in machinery.
Collaborations
Throughout his career, Takeshi has collaborated with esteemed colleagues such as Kiwamu Takahashi and Nagisa Kuwahara. Their joint efforts have fostered a creative environment conducive to the development of cutting-edge technologies in the construction machinery sector.
Conclusion
Takeshi Ishii's work exemplifies the spirit of innovation within the construction industry. His patents not only enhance operational efficiency but also contribute to sustainable practices in energy consumption. As technology advances, the impact of his inventions will likely continue to resonate within the industry, benefiting both manufacturers and end-users alike.