Thomas K Cho

US Patent:

48913081, Jan 2, 1990

Filed:

Apr 14, 1989

Appl. No.:

7/344974

Inventors:

Thomas B. Cho - East Brunswick NJ

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

G03C 182

US Classification:

430527

Abstract:

As part of a photographic film, a backing antistatic layer is coated at a pH of 3 to 12 with an auxiliary layer consisting essentially of at least one crosslinkable conductive polymer and a crosslinking agent for the conductive polymer dispersed in a binder, e. g. , gelatin, to conduct the antistatic properties from the antistatic underlayer to the surface of the backing layer. The crosslinkable conductive polymer and crosslinking agent can be present in separate layers on the backing layer. The film is useful in the areas of graphic arts, printing, medical and information systems.

US Patent:

49606875, Oct 2, 1990

Filed:

Sep 29, 1989

Appl. No.:

7/414420

Inventors:

Thomas B. Cho - East Brunswick NJ

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

G03C 182

US Classification:

430527

Abstract:

An improved process for the preparation of backing layers with improved coating qualities is described. These layers are designed to transmit antistatic properties from antistatic layers coated under the backing layers and provide antihalation or anticurl effects in addition thereto. The process of this invention includes in-line addition of a pre-stabilized crosslinking solution to a gelatino-conductive polymer solution just prior to the coating thereof. Smooth, skip-free coatings are obtained and the solutions are stable and can be maintained for long periods of time.

US Patent:

45857300, Apr 29, 1986

Filed:

Jan 16, 1985

Appl. No.:

6/697378

Inventors:

Thomas B. Cho - East Brunswick NJ

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

G03C 182

US Classification:

430527

Abstract:

As part of a photographic film, a backing layer is coated with an auxiliary layer designed to conduct antistatic properties from an antistatic underlayer to the surface of the backing.

US Patent:

20180056855, Mar 1, 2018

Filed:

Aug 31, 2016

Appl. No.:

15/252416

Inventors:

- Franklin TN, US
Thomas CHO - Novi MI, US

International Classification:

B60Q 1/44
B60Q 1/26

Abstract:

A first lamp assembly has a first attachment surface, a first transparent surface, a first side surface extending from the first transparent surface to the first attachment surface, and a first lighting member positioned to emit light through a portion of the first side surface. A second lamp assembly has a second attachment surface, a second transparent surface opposite the second attachment surface and a second side surface extending from the second transparent surface to the second attachment surface. The second side surface has a first projection extending therefrom that defines a first light deflecting surface such that when the second side surface and the first side surface are adjacent to one another with the light deflecting surface and first lighting member being aligned, the first light deflecting surface reflects and disperses light in a first area between the first lamp assembly and the second lamp assembly.