Company Filing History:

10 out of 1,391

W. R. Grace Co.-conn.

patents

1 out of 7,680

The Dow Chemical Company

patents

where one patent can have more than one assignee

Years Active: 2000-2005

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10 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6958375 - Chromium support-agglomerate-transition metal polymerization catalysts and processes utilizing same (2005-10-25),

2. 6946420 - Coordination catalyst systems employing chromium support-agglomerate and method of their preparation (2005-09-20),

3. 6943224 - Process for preparing supported transition metal catalyst systems and catalyst systems prepared thereby (2005-09-13),

4. 6927261 - Method of making supported transition metal polymerization catalysts and compositions formed therefrom (2005-08-09),

5. 6734131 - Heterogeneous chromium catalysts and processes of polymerization of olefins using same (2004-05-11),

6. 6686306 - Supported dual transition metal catalyst systems (2004-02-03),

7. 6559090 - Metallocene and constrained geometry catalyst systems employing agglomerated metal oxide/clay support-activator and method of their preparation (2003-05-06),

8. 6399535 - Coordination catalyst systems employing agglomerated metal oxide/clay support-activator and method of their preparation (2002-06-04),

9. 6184171 - Supported bidentate and tridentate catalyst compositions and olefin polymerization using same (2001-02-06),

10. 6087293 - Supported catalyst containing tethered cation forming activator (2000-07-11),

Title: The Innovative Contributions of Keng-Yu Shih

Introduction

Keng-Yu Shih is a prominent inventor based in Columbia, MD, known for his significant contributions to the field of polymerization catalysts. With a total of 10 patents to his name, Shih has made remarkable advancements in the development of efficient catalyst systems.

Latest Patents

Among his latest patents, Shih has developed a novel one-step method for forming a supported catalyst complex of high activity. This method involves substantially simultaneously contacting a bidentate or tridentate ligand forming compound, a transition metal compound, and a chromium immobilized Lewis acid support-agglomerate. The catalyst can be formed prior to the polymerization of olefins or within the polymerization reaction zone. Another notable patent focuses on a coordinating catalyst system that comprises at least one pre-catalyst selected from late transition metal bidentate or tridentate ligand containing compounds, along with a support-agglomerate having chromium immobilized thereto. This catalyst system exhibits enhanced activity for polymerizing olefins and yields polymer products with excellent morphology.

Career Highlights

Throughout his career, Keng-Yu Shih has worked with esteemed companies such as W.R. Grace & Co. and The Dow Chemical Company. His work in these organizations has allowed him to refine his expertise in catalyst development and polymerization processes.

Collaborations

Shih has collaborated with notable colleagues, including Dean Alexander Denton and Michael John Carney. These collaborations have contributed to the advancement of his research and the successful development of innovative catalyst systems.

Conclusion

Keng-Yu Shih's contributions to the field of polymerization catalysts are significant and impactful. His innovative patents and collaborations highlight his expertise and dedication to advancing technology in this area.

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