This inventor holds 5 USPTO granted patents. Top assignees: Unitika Ltd., Daitoh Knit Co., Ltd., Kohtoku Industrial Waste Management Incorporation. Active years: 1980-1993.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
4 out of 394 
1 out of 1 
1 out of 1 Years Active: 1980-1993
Title: Innovations by Hiroyuki Uejima
Introduction
Hiroyuki Uejima is a notable inventor based in Nara, Japan. He has made significant contributions to the field of waste management and environmental technology. With a total of 5 patents to his name, Uejima's work focuses on innovative methods for treating human waste and removing heavy metals from water.
Latest Patents
One of Uejima's latest patents is a method for dehydrating human-waste disposal materials. This method involves treating used human-waste disposal materials, which contain a highly water-absorbent polymer, with an aqueous solution of an alkaline earth metal salt, such as calcium or magnesium. The materials are then mechanically dehydrated, allowing for efficient and low-cost reduction of water content in disposable paper diapers. This innovation facilitates easier disposal through incineration or repurposing as organic fertilizer.
Another significant patent is a process for removing heavy-metal ions from aqueous solutions. This involves the use of an etherified phenolic chelate resin, which is produced by stabilizing and protecting the chelate groups of a phenolic chelate resin. The process allows for the separation of heavy metal ions from solutions with a pH of at least 7, showcasing Uejima's commitment to environmental sustainability.
Career Highlights
Throughout his career, Hiroyuki Uejima has worked with prominent companies such as Unitika Ltd. and Kohtoku Industrial Waste Management Incorporation. His experience in these organizations has contributed to his expertise in waste management technologies and environmental solutions.
Collaborations
Uejima has collaborated with notable individuals in his field, including Masahide Hirai and Masahiro Kazigase. These partnerships have likely enhanced his innovative capabilities and broadened the impact of his inventions.
Conclusion
Hiroyuki Uejima's contributions to waste management and environmental technology through his patents demonstrate his dedication to innovation. His work not only addresses pressing environmental issues but also paves the way for future advancements in the field.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile