1
Ronald N DeMartino, Hyun Nam Yoon, James B Stamatoff, Alan Buckley: Polyoxyalkylene polymers exhibiting nonlinear optical response. Celanese Corporation, Depaoli & O Brien, September 15, 1987: US04694066 (49 worldwide citation)

This invention provides novel polyoxyalkylene polymers which exhibit nonlinear optical response, and which have utility as a transparent optical component in electrooptic light modulator devices.


2
Nancy C Eickman, Charles E McChesney, Gary E Williams, Hyun Nam Yoon: Encapsulation of electronic components with anisotropic thermoplastic polymers. Celanese Corporation, Burns Doane Swecker & Mathis, December 30, 1986: US04632798 (45 worldwide citation)

An improved thermoplastic molding composition is provided which is particularly suited for use in the impervious void-free encapsulation on a relatively expeditious basis of an electronic component wherein the preformed electronic component is positioned in a mold cavity prior to the introduction of ...


3
Hyun Nam Yoon, Chia C Teng: Waveguide electrooptic light modulator with low optical loss. Hoechst Celanese, DePaoli & O Brien, June 26, 1990: US04936645 (42 worldwide citation)

In one embodiment this invention provides a thin film waveguide electrooptic light modulator which consists of (1) a laminated assembly of a waveguiding thin film of an organic polymer which exhibits second order nonlinear optical response, and upper and lower organic polymer blend cladding layers, ...


4
Iain McCulloch, Anthony J East, Ming Kang, Richard Keosian, Hyun Nam Yoon: Water soluble negative-working photoresist composition. Clariant International, Sangya Jain, December 7, 1999: US05998092 (34 worldwide citation)

A water soluble polymer that when used with a suitable photoacid generator (PAG) forms a negative working water soluble photoresist. The polymer comprises of a backbone, such as polyvinyl ether, coupled by a linkage group to an acetal protected .beta.-keto acid group. With the addition of a number o ...


5
Hyun Nam Yoon: Method for the melt processing of thermotropic liquid crystal polymers. Celanese Corporation, Burns Doane Swecker & Mathis, April 8, 1986: US04581399 (33 worldwide citation)

An improved method is provided for the melt processing of thermotropic liquid crystal polymers. An improvement in the melt processing (e.g., fiber spinning) of thermotropic liquid crystal polymers is obtained if minor amounts of a low molecular weight liquid crystalline compound are added to the mel ...


6
John I Thackara, George F Lipscomb, Hyun Nam Yoon, Ronald N De Martino: Electro-optic channel waveguide. Lockheed Missiles & Space Company, John J Morrissey, April 16, 1991: US05007696 (32 worldwide citation)

A three-dimensional electro-optic waveguide is formed as a channel in a structure made of an organic non-linear optical polymer. A poling electric field is maintained in a portion of the polymer structure defining the channel, and the polymer structure is heated above the glass-transition temperatur ...


7
Nancy C Eickman, Charles E McChesney, Gary E Williams, Hyun Nam Yoon: Electronic component encapsulated with a composition comprising a polymer which is capable of forming an anisotropic melt phase and substantially incapable of further chain growth upon heating. Hoebbst Celanese Corporation, Burns Doane Swecker & Mathis, January 19, 1988: US04720424 (29 worldwide citation)

An improved thermoplastic molding composition is provided which is particularly suited for use in the impervious void-free encapsulation on a relatively expeditious basis of an electronic component wherein the preformed electronic component is positioned in a mold cavity prior to the introduction of ...


8
Hong Tai Man, Iain A McCulloch, Hyun Nam Yoon: Polymeric film electrooptic sensor device. Palaiyor S Kalyanaraman, September 23, 1997: US05670871 (28 worldwide citation)

This invention provides an electrooptic sensor device which is adapted to measure micro-circuit electrical signals with subpicosecond resolution. The sensor device has an electrooptic organic polymer film matrix. The sensor device is positioned adjacent to an electrical signal transmission line of a ...


9
John I Thackara, George F Lipscomb, Hyun Nam Yoon, Ronald N De Martino: Electro-optic channel waveguide. Lockheed Missiles & Space Company, John J Morrissey, April 9, 1991: US05006285 (27 worldwide citation)

A three-dimensional electro-optic waveguide is formed as a channel in a structure made of an organic non-linear optical polymer. A poling electric field is maintained in a portion of the polymer structure defining the channel, and the polymer structure is heated above the glass-transition temperatur ...


10
Ronald N DeMartino, Hyun Nam Yoon, James B Stamatoff: Polymeric thin film waveguide media. Hoechst Celanese, Michael W Ferrell, March 26, 1991: US05002361 (27 worldwide citation)

This invention provides polymeric thin film optical waveguide media which exhibit nonlinear optical response, and which have utility as an optical waveguide component in all-optical and electrooptical light switch and light modulator devices. An invention waveguide medium consists of a thin film of ...