This inventor holds 4 USPTO granted patents. Top assignees: Kanebo Rayon, Ltd., Kanebo, Limited. Active years: 1990-1993.
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 4 
4 out of 305 
Years Active: 1990-1993
Title: The Innovative Contributions of Shigeru Okuma
Introduction: Shigeru Okuma, an accomplished inventor based in Hofu, Japan, holds four significant patents that showcase his innovative spirit and expertise in the field of cellulose materials. His work reflects a deep understanding of material science and applications that can revolutionize various industries.
Latest Patents: Among Okuma's latest patents is a groundbreaking process for producing fine cellulose particles. This innovation details a method for creating fine crosslinked cellulose particles, which are characterized by a unique composition of a II-type cellulose crystalline phase and a non-crystalline cellulose phase. The resulting particles have a crystallinity level of 5 to 35%, an average diameter not exceeding 300 micrometers, and an exclusion limit molecular weight by polyethylene glycol of not more than 4,000. The intricate process of preparation involves producing fine particles from coagulated viscose of cellulose xanthate, followed by a controlled crosslinking reaction and subsequent neutralization. These refined particles can be further purified through various methods including heat treatment and desulfurization.
Career Highlights: Throughout his career, Shigeru Okuma has been associated with notable companies such as Kanebo, Limited and Kanebo Rayon, Ltd. His positions in these organizations allowed him to hone his skills and apply his innovative ideas to real-world applications.
Collaborations: Okuma has collaborated with esteemed colleagues, including Kanji Yamagishi and Masami Hara, contributing to advancements in cellulose technology and materials science. These partnerships have facilitated the exchange of ideas and expertise, enriching the research environment.
Conclusion: Shigeru Okuma's innovative contributions to the field of cellulose materials are marked by his extensive patents and collaborative efforts. His dedication to advancing technology underscores the essential role of inventors in driving modern advancements that have the potential to shape various industries. As a leading figure in his field, Okuma exemplifies the impact of invention and innovation in our world today.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile