Company Filing History:

13 out of 789

Toyo Boseki Kabushiki Kaisha

patents

The Dow Chemical Company

patents

Years Active: 1992-2020

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17 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 10814289 - Separation membrane, separation membrane element and separation membrane module (2020-10-27),

2. 9550153 - Porous polymer flat-sheet membrane (2017-01-24),

3. 9394638 - Polyimide nonwoven fabric and process for production thereof (2016-07-19),

4. 9211509 - Reverse osmosis membrane for wastewater treatment (2015-12-15),

5. 8580380 - Polybenzazole fiber and pyridobisimidazole fiber (2013-11-12),

6. 7868126 - Process for producing polyester, polyester produced using said process, and polyester molded product (2011-01-11),

7. 7811673 - High strength polyethylene fiber (2010-10-12),

8. 7649025 - Composite ion-exchange membrane (2010-01-19),

9. 7141301 - High strength polyethylene fiber (2006-11-28),

10. 6899950 - High strength polyethylene fiber (2005-05-31),

11. 6884506 - Polybenzazole fiber (2005-04-26),

12. 6673445 - Polybenzazole fibers and their utilization (2004-01-06),

13. 6040050 - Polybenzazole fiber having high tensile modulus and process of (2000-03-21),

14. 5993963 - Polybenzazole fiber and method for production thereof (1999-11-30),

15. 5772942 - Processes for producing polybenzazole fibers (1998-06-30),

Title: Tooru Kitagawa: Innovator in Separation Membrane Technology

Introduction

Tooru Kitagawa is a prominent inventor based in Otsu, Japan, known for his significant contributions to the field of separation membrane technology. With a total of 17 patents to his name, Kitagawa has focused on developing innovative solutions that address critical challenges in water permeability and chemical durability.

Latest Patents

Among his latest patents, Kitagawa has developed a separation membrane designed for the forward osmosis method. This membrane maintains high porosity while effectively reducing concentration polarization through controlled pore distribution. It achieves both high water permeability and self-supporting properties, making it suitable for various draw solutions. Another notable invention is a porous polymer flat-sheet membrane for membrane bioreactors (MBR). This membrane is designed to remain hydrophilic over extended periods, ensuring high water permeability and anti-fouling properties.

Career Highlights

Throughout his career, Tooru Kitagawa has worked with reputable companies such as Toyo Boseki Kabushiki Kaisha and Toyobo Co., Ltd. His work has significantly advanced the field of membrane technology, contributing to more efficient and durable solutions.

Collaborations

Kitagawa has collaborated with notable colleagues, including Yasuo Ohta and Yoshimitsu Sakaguchi, further enhancing the impact of his innovations in the industry.

Conclusion

Tooru Kitagawa's work in separation membrane technology exemplifies the importance of innovation in addressing modern challenges. His patents reflect a commitment to improving water treatment processes and enhancing the efficiency of membrane applications.

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2 patents (EPO):

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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.