Company Filing History:

7 out of 285

Toyo Soda Manufacturing Co., Ltd.

patents

where one patent can have more than one assignee

Years Active: 1978-2005

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12 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6896865 - Method for recovering hydrogen chloride from chlorine based waste and use of recovered hydrogen chloride (2005-05-24),

2. 5948265 - Ion-exchanger, process for production thereof, and process for removal (1999-09-07),

3. 5861537 - Method of producing high-quality polyethylenepolyamines (1999-01-19),

4. 5279717 - Process for removing chlorate salt from aqueous alkali chloride solution (1994-01-18),

5. 5039424 - Method for treating an amine-containing waste water (1991-08-13),

6. 4906782 - Process for preparation of alkyleneamines (1990-03-06),

7. 4845297 - Process for producing polyamines (1989-07-04),

8. 4625064 - Method for producing bis [.beta.(N,N-dimethylamino)ethyl]ether (1986-11-25),

9. 4492803 - Method for producing bis[.beta.-(N,N-dimethylamino)alkyl]-ether (1985-01-08),

10. 4490556 - Method for preparing bis[.beta.-(N,N-dimethylamino)ethyl]ether (1984-12-25),

11. 4182919 - Process for reaction in catalyst suspension system (1980-01-08),

12. 4123616 - Process for hydrogenation of organic peroxide (1978-10-31),

Title: The Innovations of Sadakatsu Kumoi

Introduction

Sadakatsu Kumoi is a notable inventor based in Hikari, Japan. He has made significant contributions to the field of chemical engineering, particularly in the recovery and purification of hydrogen chloride. With a total of 12 patents to his name, Kumoi's work has had a substantial impact on industrial processes.

Latest Patents

Kumoi's latest patents include a method for recovering hydrogen chloride from chlorine-based waste. This innovative process aims to provide a high-quality hydrogen chloride feedstock for the oxychlorination reaction, which is essential in producing dichloroethane and vinyl chloride monomers. The method involves adding water and a reducing agent to an acid gas obtained from the combustion of chlorine-based waste. This reaction results in a crude hydrogen chloride aqueous solution, which is then distilled to obtain purified hydrogen chloride gas. Another significant patent involves the development of an ion-exchanger comprising zirconium hydroxide supported on active carbon. This ion-exchanger exhibits high chemical resistance, heat resistance, mechanical strength, and excellent ion exchange characteristics.

Career Highlights

Throughout his career, Kumoi has worked with prominent companies such as Toyo Soda Manufacturing Co., Ltd. and Tosoh Corporation. His experience in these organizations has allowed him to refine his expertise in chemical processes and innovations.

Collaborations

Kumoi has collaborated with notable individuals in the field, including Yukihiro Tsutsumi and Keiji Mitarai. These partnerships have contributed to the advancement of his research and the successful development of his patents.

Conclusion

Sadakatsu Kumoi's contributions to the field of chemical engineering through his innovative patents demonstrate his commitment to improving industrial processes. His work continues to influence the recovery and purification of chemical substances, showcasing the importance of innovation in this sector.

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