Company Filing History:

17 out of 893

Tosoh Corporation

patents

3 out of 285

Toyo Soda Manufacturing Co., Ltd.

patents

1 out of 36,499

Toyota Jidosha Kabushiki Kaisha

patents

4. 1 out of 191

Sagami Chemical Research Center

patents

where one patent can have more than one assignee

Years Active: 1981-1998

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21 patents (USPTO):Sort by Forward Citations

Abstract keywords

1. 5807528 - Catalyst for purifying exhaust gas (1998-09-15),

2. 5695728 - Method for removal of nitrogen oxides (1997-12-09),

3. 5449504 - Process for removing nitrogen oxides from oxygen rich exhaust gas (1995-09-12),

4. 5443803 - Catalyst for purifying exhaust gas (1995-08-22),

5. 5427753 - Process for removing nitrogen oxides from oxygen rich exhaust gas (1995-06-27),

6. 5382416 - Method for purifying exhaust gas (1995-01-17),

7. 5374409 - Purifying gases with an alkali metal and transition metal containing (1994-12-20),

8. 5236879 - Catalyst for purifying exhaust gas (1993-08-17),

9. 5208198 - Catalyst for purifying exhaust gas (1993-05-04),

10. 5206196 - Catalyst for purifying exhaust gas (1993-04-27),

11. 5149877 - Process for producing alkylenamine (1992-09-22),

12. 5073649 - Process for producing a polyalkylene polyamine (1991-12-17),

13. 5001289 - Shaped zeolite catalyst for liquid phase organic reactions (1991-03-19),

14. 4982003 - Mixed oxide catalyst and process for producing an alkylenamine by using (1991-01-01),

15. 4914247 - Process for preparing para-substituted halogenobenzene derivatives (1990-04-03),

Title: Innovations of Kazuhiko Sekizawa: A Pioneer in Exhaust Gas Purification

Introduction

Kazuhiko Sekizawa, based in Shinnanyo, Japan, is a notable inventor with a significant portfolio comprising 21 patents. His contributions primarily focus on innovations aimed at purifying exhaust gases, addressing environmental concerns related to emissions.

Latest Patents

Among his most recent innovations, Sekizawa has developed a catalyst for purifying exhaust gas, designed to effectively remove nitrogen oxides, carbon monoxide, and hydrocarbons. The catalyst comprises a zeolite with an SiO2/Al2O3 mole ratio of at least 15, incorporating silver, with optional inclusion of an alkali metal or alkaline earth metal. Another noteworthy patent details a method for removing nitrogen oxides from oxygen-rich exhaust gases, utilizing a catalyst containing zeolite with an apatite compound, along with active metals and alkaline earth metals. These inventions mark a substantial advancement in exhaust gas treatment technologies.

Career Highlights

Kazuhiko Sekizawa has made significant contributions while working at several prominent companies, including Tosoh Corporation and Toyo Soda Manufacturing Co., Ltd. His work in these organizations has been pivotal in advancing technologies related to environmental sustainability.

Collaborations

Throughout his career, Sekizawa has collaborated with esteemed colleagues such as Masao Nakano and Senshi Kasahara. Their combined expertise has undoubtedly contributed to the success of his innovative endeavors, enhancing the efficacy of gas purification methods.

Conclusion

Kazuhiko Sekizawa exemplifies dedication and ingenuity in the field of environmental innovations. His 21 patents, particularly in exhaust gas purification, establish him as a leading figure in addressing pressing ecological challenges, showcasing the vital role inventors play in advancing technology for a sustainable future.

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