Company Filing History:

10 out of 623

Korea Research Institute of Chemical Technology

Years Active: 1993-2014

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12 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 8703901 - Transparent, highly heat-resistant polyimide precursor and photosensitive polyimide composition thereof (2014-04-22),

2. 8232366 - Transparent, highly heat-resistant polyimide precursor and photosensitive polyimide composition thereof (2012-07-31),

3. 6162893 - Soluble polyimide resin having a dialkyl substituent for a liquid (2000-12-18),

4. 616289 - Soluble polyimide resin having a dialkyl substituent for a liquid (2000-12-19),

5. 6046303 - Soluble polyimide resin having alkoxy substituents and the preparation (2000-04-04),

6. 6031067 - Soluble polyimide resin and process of preparation of the same (2000-02-29),

7. 6013760 - Soluble polyimide resin for liquid crystal alignment layer and process (2000-01-11),

8. 5955568 - Process for preparing polyamideimide resins by direct polymerization (1999-09-21),

9. 5824766 - Polyamideamic acid resin prepolymers, high heat resistant polyamideimide (1998-10-20),

10. 5532334 - Process for preparing polyamideimide resins having high molecular weight (1996-07-02),

11. 5521276 - Polyamideimide resins containing isophorone diamine structures (1996-05-28),

12. 5241037 - Nadimide-terminated polyarylates and cured polyarylate resins (1993-08-31),

Title: Mi-hie Yi: Innovator in Polyimide Technology

Introduction

Mi-hie Yi is a prominent inventor based in Daejeon, South Korea. He has made significant contributions to the field of polyimide technology, holding a total of 12 patents. His work focuses on developing materials that enhance the performance and durability of electronic devices.

Latest Patents

One of Mi-hie Yi's latest patents is for a transparent, highly heat-resistant polyimide precursor and photosensitive polyimide composition. This invention relates to an aqueous alkali-developable photosensitive polyimide precursor resin composition that is suitable for highly heat-resistant transparent protection layers and insulation layers for liquid crystal display devices. The invention details a two-step manufacturing process, starting with the creation of a transparent linear polyamic acid from specific tetracarboxylic acid dianhydrides and diamines. The second step involves the production of reactive transparent polyimide precursors through an esterification reaction. These compositions exhibit superior photosensitivity, making them ideal for use in liquid crystal display devices that require high heat resistance, chemical resistance, mechanical strength, and electrical insulation.

Career Highlights

Mi-hie Yi has worked with notable organizations such as the Korea Research Institute of Chemical Technology and LG Chem, Ltd. His experience in these institutions has allowed him to refine his expertise in chemical technology and material science.

Collaborations

Throughout his career, Mi-hie Yi has collaborated with esteemed colleagues, including Kil-Yeong Choi and Moon-Young Jin. These partnerships have contributed to the advancement of innovative solutions in the field of polyimide technology.

Conclusion

Mi-hie Yi's contributions to polyimide technology have positioned him as a key figure in the development of advanced materials for electronic applications. His innovative patents continue to influence the industry and enhance the performance of liquid crystal display devices.

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