Giao Ngoc Nguyen

US Patent:

42972604, Oct 27, 1981

Filed:

Nov 19, 1979

Appl. No.:

6/095574

Inventors:

William I. Ferree - Dallas TX
Giao V. Nguyen - Dallas TX

Assignee:

Liquid Paper Corporation - Dallas TX

International Classification:

C08K 517

US Classification:

260 297H

Abstract:

An erasable writing medium composition suitable for use in porous tip and ballpoint pens is provided. The erasable writing medium comprises an emulsion having a continuous water phase and discontinuous phase that comprises a styrene-butadiene latex copolymer. The colorant or dye is dissolved in the continuous phase and also is believed to form a surface layer on the discontinuous phase particles. Upon drying, the colorant is captured by the copolymer thereby preventing the colorant from being absorbed by the writing surface.

US Patent:

51184443, Jun 2, 1992

Filed:

Apr 10, 1991

Appl. No.:

7/683313

Inventors:

Giao V. Nguyen - Lewisville TX

Assignee:

Witco Corporation - New York NY

International Classification:

A61R 3578
C09K 1520

US Classification:

252390

Abstract:

The present invention discloses a method of producing as aqueous agricultural composition exhibiting reduced irritation to animals and corrosiveness to materials by admixing an agriculturally acceptable pesticide and an amine-oxide surfactant having the Formula: ##STR1## wherein R. sup. 1 is a straight or branched chain about C. sub. 6 to about C. sub. 20 alkyl or alkenyl group, R. sup. 2, R. sup. 3, R. sup. 4 and R. sup. 5 are each independently selected from the group of straight and branched chain lower alkylenyl groups, and a+b+c+d is about 5 to about 25. The compositions exhibit reduced eye irritation to animals and reduced corrosiveness to metals. A method of treating plants is also disclosed.

US Patent:

42512760, Feb 17, 1981

Filed:

Sep 5, 1979

Appl. No.:

6/072691

Inventors:

William I. Ferree - Dallas TX
Giao V. Nguyen - Dallas TX

Assignee:

Liquid Paper Corporation - Dallas TX

International Classification:

B41M 526
C09D 1110

US Classification:

106 27

Abstract:

A thermally activated ink and a thermally activated transfer ribbon, comprising a polymer, oil and oil-gelling agent, are provided. The ink may form a coating on a substrate, such as a ribbon, for use in conjunction with a thermal printer or a nonimpact typewriter, for example, for generating characters on ordinary paper. A method is also provided for generating characters on ordinary paper with a thermal print head.