Patents by Inventor Chih-Yueh Chou

Chih-Yueh Chou has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5591819
    Abstract: The present invention provides compositions and method of using an aldimine oxazolidine compound having the formula: ##STR1## wherein: R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 and R.sub.8 are, individually, a hydrogen atom, a methyl or methylol group, an ethyl or ethylol group, a straight chain or branched chain alkyl or alkanol group, a cycloalkyl group, or an aryl group, including any of the above groups substituted by nitro, halogen, thiol and amino functional groups, such that when R.sub.5, R.sub.6, R.sub.7 and R.sub.8 are hydrogen atoms, R.sub.3 and R.sub.4 are not hydrogen atoms, further, R.sub.7 and R.sub.
    Type: Grant
    Filed: October 11, 1994
    Date of Patent: January 7, 1997
    Assignee: Angus Chemical Company
    Inventors: Chih-Yueh Chou, Marina D. Hoffman
  • Patent number: 5506329
    Abstract: Methods of using a mixture as a corrosion inhibitor, moisture scavenger, formaldehyde scavenger, rheological modifier, thermoplastic foam inhibitor, antifreezing agent, decolorizing agent, drying agent and corrosion inhibitor are provided by the present invention. The mixture comprises an aldimine oxazolidine compound having the formula: ##STR1## wherein: R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 and R.sub.8 are, individually, a hydrogen atom, a methyl or methylol group, an ethyl or ethylol group, a straight chain or branched chain alkyl or alkanol group, a cycloalkyl group, or an aryl group, including any of the above groups substituted by nitro, halogen, thiol and amino functional groups, such that when R.sub.5, R.sub.6, R.sub.7 and R.sub.8 are hydrogen atoms, R.sub.3 and R.sub.4 are not hydrogen atoms, further, R.sub.7 and R.sub.
    Type: Grant
    Filed: October 11, 1994
    Date of Patent: April 9, 1996
    Assignee: Angus Chemical Company
    Inventors: Chih-Yueh Chou, Marina D. Hoffman
  • Patent number: 5433891
    Abstract: Methods of using a mixture as a corrosion inhibitor, moisture or formaldehyde scavenger, reactive diluent, rheological modifier, thermoplastic foam inhibitor, antifreezing agent, decolorizing agent, drying agent, agent for reducing bubble formation, and an agent for reducing downglossing. The mixture consists of from 0 to 100 mole percent of an iminoalcohol compound: ##STR1## wherein: R.sub.1 is a methyl or methylol group, an ethyl or ethylol group, a branched or straight chain alkyl or alkanol group, a cycloalkyl group, or an aryl group; R.sub.2 is a hydrogen atom, a methyl or methylol group, an ethyl or ethylol group, a straight chain or branched chain alkyl or alkanol group, a cycloalkyl group, or an aryl group, or R.sub.1 and R.sub.2 are fused together with the attached carbon to form a cycloalkane ring; R.sub.3, R.sub.4 and R.sub.5 are, individually, a hydrogen atom, a methyl or methylol group, an ethyl or ethylol group, or a straight chain or branched chain alkyl or alkanol group; R.sub.
    Type: Grant
    Filed: March 31, 1994
    Date of Patent: July 18, 1995
    Assignee: Angus Chemical Company
    Inventors: Chih-Yueh Chou, Pattabbi K. Raman, Robert E. Malocha, Thomas L. Johnson, Vincent Nocito, Marina D. Hoffman, Patrick E. Brutto
  • Patent number: 5328635
    Abstract: Methods of using a mixture as a corrosion inhibitor, moisture or formaldehyde scavenger, reactive diluent, rheological modifier, thermoplastic foam inhibitor, antifreezing agent, decolorizing agent, or drying agent. The mixture consists of from 0 to 100 mole percent of an iminoalcohol compound: ##STR1## wherein: R.sub.1 is a methyl or methylol group, an ethyl or ethylol group, a branched or straight chain alkyl or alkanol group, a cycloalkyl group, or an aryl group; R.sub.2 is a hydrogen atom, a methyl or methylol group, an ethyl or ethylol group, a straight chain or branched chain alkyl or alkanol group, a cycloalkyl group, or an aryl group, or R.sub.1 and R.sub.2 are fused together with the attached carbon to form a cycloalkane ring; R.sub.3, R.sub.4 and R.sub.5 are, individually, a hydrogen atom, a methyl or methylol group, an ethyl or ethylol group, or a straight chain or branched chain alkyl or alkanol group; R.sub.
    Type: Grant
    Filed: April 8, 1992
    Date of Patent: July 12, 1994
    Assignee: ANGUS Chemical Company
    Inventors: Chih-Yueh Chou, Pattabhi K. Raman, Robert E. Malocha, Thomas L. Johnson, Vincent Nocito, Marina D. Hoffman, Patrick E. Brutto
  • Patent number: 5264148
    Abstract: The present invention provides a moisture-scavenging composition including the compound: ##STR1## wherein: R.sub.1 is a methyl group, or a branched or straight chain alkyl or alkanol group; R.sub.2, R.sub.3, R.sub.4 and R.sub.6 are, individually, a hydrogen atom, a methyl group, a straight chain or branched chain alkyl or alkanol group, a cyclic alkyl or an aryl group; R.sub.5 is a methyl or methylol group, or a branched chain or straight chain alkyl or alkanol group; R.sub.7 is a hydrogen atom, a methyl group, a straight chain or branched chain alkyl or alkanol group, a cyclic alkyl group, a carbonyl group or an aryl group, or R.sub.7 and R.sub.6 are fused together with the attached carbon to form an eight member bicyclic compound having the structure: ##STR2## wherein: R.sub.1 ' is a methyl group or a branched or straight chain alkyl or alkanol group; R.sub.2 ', R.sub.3 ', and R.sub.
    Type: Grant
    Filed: December 4, 1990
    Date of Patent: November 23, 1993
    Assignee: Angus Cheical Company
    Inventors: Chih-Yueh Chou, Arthur T. Jones, Thomas L. Johnson
  • Patent number: 5223174
    Abstract: A moisture-scavenging composition including a mixture of moisture scavenging compounds, wherein the mixture consists of from 0 to 100 mole percent of an iminoalcohol compound: ##STR1## wherein: R.sub.1 is a methyl or methylol group, an ethyl or ethylol group, a branched or straight chain alkyl or alkanol group, a cycloalkyl group, or an aryl group; R.sub.2 is a hydrogen atom, a methyl or methylol group, an ethyl or ethylol group, a straight chain or branched chain alkyl or alkanol group, a cycloalkyl group, or an aryl group, or R.sub.1 and R.sub.2 are fused together with the attached carbon to form a cycloalkane ring; R.sub.3, R.sub.4 and R.sub.5 are, individually, a hydrogen atom, a methyl or methylol group, an ethyl or ethylol group, or a straight chain or branched chain alkyl or alkanol group; R.sub.6 is a hydrogen atom, a methyl group, an ethyl group, or a straight chain or branched chain alkyl group; and R.sub.
    Type: Grant
    Filed: August 15, 1991
    Date of Patent: June 29, 1993
    Assignee: Angus Chemical Company
    Inventors: Chih-Yueh Chou, Robert E. Malocha, Vincent Nocito
  • Patent number: 4837332
    Abstract: Amino acid salt having at least one unblocked amino group and comprising at least one cation which has a nitrogen cationic atom is reacted with 1-(tertiary-alkoxycarbonyl)imidazole in the liquid phase and in the presence of essentially inert organic solvent having a dielectric constant at 25.degree. C. of at least about 4, to produce N-(tertiary-alkoxycarbonyl)-blocked amino acid salt.
    Type: Grant
    Filed: March 7, 1986
    Date of Patent: June 6, 1989
    Assignee: PPG Industries, Inc.
    Inventor: Chih-Yueh Chou