Location History:
- Ohi, JA (1977)
- Iruma, JP (1984)
- Saitama, JP (1985 - 1993)
Company Filing History:
7 out of 220 
3 out of 3,132 
2 out of 39 Years Active: 1977-1993
Title: **Innovations by Tsugio Maeshima: Contributions to Hydroxyapatite and Zeolite Technologies**
Introduction
Tsugio Maeshima is a notable inventor based in Saitama, Japan, recognized for his significant contributions to materials science. With a remarkable portfolio of 10 patents, Maeshima has pioneered advancements in both hydroxyapatite and zeolite technologies, which have implications in various industrial applications.
Latest Patents
One of Maeshima's latest innovations is a **calcium-phosphate type hydroxyapatite** designed for chromatographic separation. This hydroxyapatite is characterized by its unique spherical structure, comprising spherulites with a mean particle diameter ranging from 0.5 to 50 micrometers, preferably between 1 to 10 micrometers. The spherulites consist of aggregates of acicular crystallites belonging to hexagonal systems, with specific lattice constants for the axes. Producing this hydroxyapatite involves granulating the substance in gel form and subsequently firing it in a controlled environment at temperatures ranging from 400 to 700 degrees Celsius. The method of firing optimizes the properties of the hydroxyapatite, enhancing its utility in chromatographic processes.
Another significant patent pertains to **binderless zeolite catalysts**, which are composed of over 90% crystalline aluminosilicate. This zeolite is produced through the crystallization of a binder found in extrudates made from a mix of crystalline aluminosilicate and silica-alumina binder. Notably, the binderless zeolite demonstrates improved catalytic activity while maintaining the structural integrity of the extrudate. It has exceptional catalytic capabilities, especially when containing more than 50% of TSZ zeolite, making it a preferable option for applications such as selective cracking of n-paraffins and alkylation of aromatics.
Career Highlights
Tsugio Maeshima has been associated with prominent companies like **Toa Nenryo Kogyo Co., Ltd.** and **Asahi Kogaku Co., Ltd.** Through these engagements, he has been instrumental in conducting innovative research and developing technologies that have shaped advancements in the chemical and materials engineering sectors.
Collaborations
Throughout his career, Maeshima has collaborated with respected colleagues, including **Nobuaki Tagaya** and **Takao Hashimoto**. These collaborations have significantly enhanced his research outcomes and contributed to the evolution of technologies related to hydroxyapatite and zeolite catalysts.
Conclusion
Tsugio Maeshima's innovative patents and collaborations mark him as a prominent figure in his field. His work not only underscores the potential of materials like hydroxyapatite and zeolites but also exemplifies the importance of continuous innovation in scientific research and industrial applications.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.