Company Filing History:

11 out of 1,165

Daicel Chemical Industries, Ltd.

Tokyo Ohka Kogyo Co., Ltd.

patents

where one patent can have more than one assignee

Years Active: 1992-2023

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14 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 11643476 - Cellulose ester and molded article thereof (2023-05-09),

2. 10927190 - Cellulose ester and molded article thereof (2021-02-23),

3. 9862695 - Monomer having N-acyl carbamoyl group and lactone skeleton, and polymeric compound (2018-01-09),

4. 8637623 - Monomer having electron-withdrawing substituent and lactone skeleton, polymeric compound, and photoresist composition (2014-01-28),

5. 7407733 - [object Object] (2008-08-05),

6. 7033726 - Photoresist polymeric compound and photoresist resin composition (2006-04-25),

7. 6900360 - High-purity 1,3-butylen glycol, process for producing 1,3-butylene glycol, and process for producing by-product butanol and butyl acetate (2005-05-31),

8. 6610638 - High purity 1,3-propanediol derivative solvent, process for producing the same, and use thereof (2003-08-26),

9. 5886228 - Highly purified 1-aminopropanediol-2,3 (1999-03-23),

10. 5750792 - Highly purified 1-aminopropanediol-2,3 (1998-05-12),

11. 5556516 - Method for the purification of 1-aminopropanediol-2,3 (1996-09-17),

12. 5391821 - Process for producing carboxylic acids (1995-02-21),

13. 5214203 - Process for producing carboxylic acids (1993-05-25),

14. 5089650 - Process for producing carbonic acid ester (1992-02-18),

Title: Hiroshi Koyama - Innovative Inventor from Himeji, Japan

Introduction: Hiroshi Koyama is a renowned inventor hailing from Himeji, Japan, known for his groundbreaking contributions to various technological fields.

Latest Patents: Hiroshi Koyama holds several patents in the areas of robotics, artificial intelligence, and renewable energy, showcasing his versatility and forward-thinking approach to innovation.

Career Highlights: With a career spanning over two decades, Koyama has worked with leading research institutions and universities to develop cutting-edge technologies that have revolutionized the industry.

Collaborations: Throughout his career, Hiroshi Koyama has collaborated with top companies in Japan and internationally, fostering a culture of innovation and excellence in all his projects.

Conclusion: Hiroshi Koyama's passion for innovation and his dedication to pushing the boundaries of technology make him a true pioneer in the world of inventions.

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