This inventor holds 5 USPTO granted patents. Top assignees: Mitsubishi Heavy Industries Limited, Mitsubishi Jukogyo Kabushiki Kaisha. Active years: 1993-2001.
Company Filing History:
3 out of 4,741 
2 out of 1,326 
Years Active: 1993-2001
Title: Shizuo Yasuda: Innovator in Waste Plastic Reclamation
Introduction
Shizuo Yasuda is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of waste management and energy recovery through his innovative inventions. With a total of 5 patents, Yasuda has focused on developing methods that address environmental challenges.
Latest Patents
One of Yasuda's latest patents is a method and apparatus for reclaiming oil from waste plastic. This invention provides a solution for extracting oil from waste plastic while ensuring that thermosetting resins and solid foreign matter do not interfere with the process. The method significantly reduces the need for presorting garbage or industrial waste. To reclaim oil from waste plastic containing chlorine compounds, such as vinyl chloride, the plastic must first be stripped of chlorine. The process involves mixing the plastic with heated sand and/or an additive agent to raise its temperature to between 250-350°C. This creates a product that consists of a mixture of sand and substantially dechlorinated plastic. The product is then heated to a temperature of 350-500°C until pyrolysis occurs. A first gas/liquid separation process separates the pyrolysis product into liquid high-boiling point oil, gaseous low-boiling point oil, and low molecular-weight gases. The liquid high-boiling point oil is recirculated back into the pyrolysis process, while a second gas/liquid separation process further separates the gaseous low-boiling point oil and low molecular-weight gases.
Career Highlights
Throughout his career, Yasuda has worked with prominent companies, including Mitsubishi Heavy Industries Limited and Mitsubishi Jukogyo Kabushiki Kaisha. His experience in these organizations has contributed to his expertise in developing innovative solutions for energy recovery and waste management.
Collaborations
Yasuda has collaborated with notable colleagues, including Yoshimasa Kawami and Yuji Kaihara. Their combined efforts have led to advancements in the field of waste plastic reclamation.
Conclusion
Shizuo Yasuda's contributions to the field of waste management through his innovative patents demonstrate his commitment to addressing environmental issues. His work continues to inspire advancements in the reclamation of resources from waste materials.