Company Filing History:

13 out of 1,194

Hoechst Celanese Corporation

patents

1 out of 381

Polyplastics Co., Ltd.

patents

1 out of 1

Hoecst Celanese Corp.

patent

Years Active: 1988-1999

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15 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5994560 - Resolution of racemic mixtures using polymers containing chiral units (1999-11-30),

2. 5851423 - Liquid crystal display devices incorporating polarizers comprising (1998-12-22),

3. 5753145 - Polarizer films with high thermal and hygroscopic stability (1998-05-19),

4. 5746949 - Polarizer films comprising aromatic liquid crystalline polymers (1998-05-05),

5. 5738918 - Laminates of liquid crystalline polymeric films for polarizer (1998-04-14),

6. 5707566 - Process for preparing high performance polarizer films (1998-01-13),

7. 5672296 - Polarizer films comprising wholly aromatic liquid crystalline polymers (1997-09-30),

8. 5667719 - High extinction polarizer films comprising liquid crystal polymeric (1997-09-16),

9. 5170461 - Polymeric electrooptic waveguide devices using a polymeric substrate (1992-12-08),

10. 5133037 - Polymeric optical modulator and waveguiding media (1992-07-21),

11. 5093883 - Nonlinear optically responsive polymeric waveguides (1992-03-03),

12. 4910057 - Melt extruded elongated member suitable for improved service as a (1990-03-20),

13. 4882402 - Side chain liquid crystalline polymeric media exhibiting third order (1989-11-21),

14. 4822865 - Acrylic copolymers exhibiting nonlinear optical response (1989-04-18),

15. 4772089 - Optical fiber cable and method for producing same (1988-09-20),

Title: Hyun Nam Yoon: Innovator in Polymer Chemistry

Introduction

Hyun Nam Yoon is a distinguished inventor based in New Providence, NJ, with a remarkable portfolio of 15 patents. His work primarily focuses on advancements in polymer chemistry and liquid crystal display technologies.

Latest Patents

One of his latest patents is titled "Resolution of racemic mixtures using polymers containing chiral units." This innovative process allows for the resolution of racemic compounds into their optically active isomers without the need for chemical transformations, such as salt formation. The method utilizes polymers with chiral moieties in their repeat units, exhibiting critical solution temperature behavior in suitable solvents. An embodiment of this patent describes the resolution of tryptophan. Another significant patent is related to "Liquid crystal display devices incorporating polarizers comprising." This invention reveals novel liquid crystal display devices that contain polarizers made from a liquid crystal polymer and a dichroic absorber, along with a process for constructing these devices.

Career Highlights

Throughout his career, Hyun Nam Yoon has worked with notable companies, including Hoechst Celanese Corporation and Polyplastics Co., Ltd. His contributions to the field have significantly advanced the understanding and application of polymer technologies.

Collaborations

He has collaborated with esteemed colleagues such as Sunny S Shen and Chia-Chi Teng, further enhancing the impact of his work in the industry.

Conclusion

Hyun Nam Yoon's innovative contributions to polymer chemistry and liquid crystal display technologies have established him as a leading inventor in his field. His patents reflect a commitment to advancing scientific knowledge and practical applications.

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