Company Filing History:

20 out of 1,109

Chisso Corporation

patents

2 out of 148

Chisso Petrochemical Corporation

patents

where one patent can have more than one assignee

Years Active: 1982-2006

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20 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7019157 - Metallocene compounds, production process for olefin polymers using catalysts containing them and olefin polymers produced by the production process (2006-03-28),

2. 6995279 - Metallocene compounds, processes for the production of olefin polymers using catalysts containing the compounds, and olefin polymers produced by the processes (2006-02-07),

3. 6846943 - Metallocene compound, olefin polymerization catalyst containing the compound, and method for producing an olefin polymer by use of the catalyst (2005-01-25),

4. 6420501 - Supported metallocene catalyst, process for preparing the same, and process for producing olefin polymers (2002-07-16),

5. 6410662 - Process for the preparation of olefin (co) polymers, olefin copolymers, and application thereof (2002-06-25),

6. 6337372 - Propylene/propylene/olefin block copolymer and process for producing the same (2002-01-08),

7. 6268443 - Process for producing a solid catalyst component for olefin polymerization and a process for producing an olefin polymer (2001-07-31),

8. 6020279 - Process for producing a solid catalyst component for olefin (2000-02-01),

9. 5122490 - Catalyst component for olefin polymerization (1992-06-16),

10. 5084429 - Catalysts for polymerization of olefins (1992-01-28),

11. 4724225 - Solid catalyst component for .alpha.-olefin polymerization and process (1988-02-09),

12. 4603184 - Process for producing alpha-olefin polymers (1986-07-29),

13. 4591577 - Solid catalyst component for alpha-olefin polymerization and process for (1986-05-27),

14. 4533705 - Process for producing .alpha.-olefin polymers (1985-08-06),

15. 4514513 - Preactivated catalyst for producing .alpha.-olefin polymers (1985-04-30),

Title: Innovations in Metallocene Compounds by Toshihiro Uwai

Introduction: Toshihiro Uwai, an accomplished inventor based in Ichihara, Japan, holds a remarkable portfolio of 20 patents. His contributions primarily focus on the field of metallocene compounds and their applications in producing olefin polymers. Uwai's innovative work has profoundly impacted the polymerization industry, making significant strides in enhancing polymerization activity through novel catalyst designs.

Latest Patents: Among his latest inventions are metallocene compounds that exhibit high polymerization activity aimed at producing highly stereoregular polymers. The production process he developed utilizes catalysts containing these metallocene compounds, resulting in advanced olefin polymers. Notably, the metallocene compounds are represented by a specific general formula which outlines the characteristics of the compounds, including their structural composition and the functional groups attached to them. These innovations offer improved methods for synthesizing polymers with desirable properties.

Career Highlights: Throughout his career, Toshihiro Uwai has made significant contributions while working at notable companies such as Chisso Corporation and Chisso Petrochemical Corporation. His expertise in polymer chemistry and metallocene technology has positioned him as a leading figure in this critical sector. Uwai's inventive spirit and commitment to research have led to advancements that support the sustainable development of polymer materials.

Collaborations: Uwai's work has often involved collaboration with skilled professionals, including notable colleagues like Akihiro Sato and Masami Tachibana. These collaborative efforts have fostered a productive environment, enabling innovative ideas to flourish and contributing to the successful development of cutting-edge technologies in the field of polymerization.

Conclusion: Toshihiro Uwai's contributions to the field of metallocene compounds and olefin polymer production have established him as a notable inventor in Japan. With 20 patents to his name, his relentless pursuit of innovation continues to shape the landscape of polymer chemistry, paving the way for future advancements in the industry. Uwai's commitment to collaboration and research underscores the importance of teamwork in achieving groundbreaking developments in technology.

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