Location History:
- Kakogawa, JP (1991)
- Hyogo, JP (1993)
Company Filing History:
2 out of 1,887 
1 out of 58 
1 out of 36 Years Active: 1991-1993
Title: Hitoshi Hatakeyama: Innovator in Naphthalene Separation Processes
Introduction
Hitoshi Hatakeyama, an accomplished inventor based in Kakogawa, Japan, has made significant contributions to the field of chemical engineering, particularly in the separation of naphthalene derivatives. With two patents to his name, he has honed his expertise in developing efficient processes for the purification of complex chemical mixtures.
Latest Patents
Hitoshi's latest patents focus on innovative methods for separating methyl-substituted naphthalene compounds. The first patent, titled "Process for Separating 2, 7-Dimethylnaphthalene Under Pressure," details a sophisticated technique for isolating 2,7-dimethylnaphthalene (2,7-DMN) from catalytically cracked petroleum oils. This process involves creating a slurry of crystals, then using high-pressure conditions to enhance the purity of the final product to over 98% by weight.
His second patent, "Process for Separating Methyl Substituted Naphthalene by Crystallization," describes a method for obtaining high-purity methyl derivatives of naphthalene (either 2,6-dimethylnaphthalene or 2-methylnaphthalene). This technique also utilizes high-temperature treatment and specific crystallization conditions to achieve an impressive purity level exceeding 98% by weight.
Career Highlights
Hitoshi Hatakeyama has built a reputable career in the chemical industry, working with renowned companies such as Kobe Steel, Ltd. and Showa Shell Sekiyu K.K. His experience in these organizations has provided him with a solid foundation in chemical processes, enabling him to innovate and develop his patented techniques.
Collaborations
Throughout his career, Hitoshi has collaborated with notable professionals in the field, including Shinji Aihara and Masami Takao. These partnerships have facilitated the exchange of ideas and expertise, contributing to the successful development and refinement of his inventions.
Conclusion
Hitoshi Hatakeyama exemplifies the spirit of innovation within the chemical engineering sector. His patents not only highlight his ingenuity but also pave the way for advancements in the separation of naphthalene compounds, showcasing the critical role of inventors in driving progress within the industry.