Company Filing History:
6 out of 221 
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1 out of 59 Years Active: 2002-2017
Title: Innovator Spotlight: Dal Sik Jang - Pioneering Hydraulic Systems in Construction Equipment
Introduction: Dal Sik Jang is a distinguished inventor based in Seoul, South Korea, with an impressive portfolio of eight patents focused on advanced hydraulic systems within the construction industry. His contributions have significantly enhanced the functionality and efficiency of construction machinery, proving invaluable to the sector.
Latest Patents: Among his notable innovations, Dal Sik Jang has developed two groundbreaking patents:
1. **Hydraulic System for Construction Machine** - This patent outlines a hydraulic system that incorporates multiple actuators, each equipped with a pump/motor. The system addresses the management of working oil through accumulators, ensuring optimal operation by balancing the flow rates entering and exiting each actuator.
2. **Hydraulic System for Construction Equipment** - This innovation introduces a hydraulic system where an actuator is seamlessly controlled by a pump/motor. The design includes logic valves within hydraulic lines, enabling the actuator to overcome load challenges by adjusting pressure, thus improving overall operation controllability.
Career Highlights: Throughout his career, Dal Sik Jang has made significant strides in the field of hydraulic systems. His work at Doosan Infracore Co., Ltd. and Doosan Corporation has positioned him as a key player in advancing construction technology.
Collaborations: Dal Sik Jang has collaborated with talented individuals such as Woo Yong Jung and Yong Lak Cho, contributing to the development and success of hydraulic technologies. Their joint efforts have fostered innovation and enhanced the performance of construction machinery.
Conclusion: Dal Sik Jang's dedication to improving hydraulic systems has led to revolutionary advancements in the construction industry. With a robust patent portfolio and a collaborative spirit, he continues to pave the way for innovation in machinery, significantly impacting the efficiency and effectiveness of construction operations. His work exemplifies the essence of modern invention, showcasing the importance of innovation in driving progress within the field.