Patents by Inventor Carmen M. Carandang

Carmen M. Carandang 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).

  • Non-toxic acid cleaner corrosion inhibitors
    Patent number: 4851149
    Abstract: Acid cleaning/pickling compositions for metal surfaces containing (A) at least one protein-derived polymer, sugar-derived polymer, sorbitol, tannin, or vinyl-based polymer, (B) at least one iodine or iodine-affording compound; acids solutions prepared therefrom; and methods for their use.
    Type: Grant
    Filed: September 21, 1987
    Date of Patent: July 25, 1989
    Assignee: Henkel Corporation
    Inventor: Carmen M. Carandang
  • Activator-accelerator mixtures for alkaline paint stripper compositions
    Patent number: 4737195
    Abstract: An activator composition having increased effectiveness and life when used in an aqueous alkaline stripper solution at elevated temperatures to remove siccative coatings from substrates containing two essential components A and B. Component A consists essentially of at least one of an ethoxylated tetrahydrofurfuryl, a mixture of an ethoxylated tetrahydrofurfuryl and an ethoxylated furfuryl, N-methyl-2-pyrrolidone and N-(2-hydroxyethyl)-2-pyrrolidine. Component B consists essentially of at least one of N-phenyl-diethanolamine, furfurylamine, tetrahydrofurfurylamine, octadecylamine, butoxypropanolamine and N-amino-morpholine.
    Type: Grant
    Filed: April 1, 1986
    Date of Patent: April 12, 1988
    Assignee: Amchem Products
    Inventors: Carmen M. Carandang, Robert W. Koch
  • Compositions and processes for coating ferrous surfaces with copper
    Patent number: 4563216
    Abstract: Aqueous copper coating compositions, solid compositions for forming the aqueous compositions, and processes for coating the surfaces of ferrous-containing materials by contacting said surfaces with the aqueous copper coating compositions, wherein the aqueous compositions contain:(a) from about 10 to about 30 grams/liter of cupric ions;(b) from about 1 to about 10 grams/liter of chloride ions;(c) from about 0.1 to about 10 grams/liter of at least one aminepolyacetic acid compound; and(d) either(i) from about 0.01 to about 10 grams/liter of acriflavine hydrochloride and from about 0.1 to about 20 grams/liter of a polyalkylene oxide C.sub.12 -C.sub.18 alkyl or alkenyl amine; or(ii) from about 0.1 to about 10 grams/liter of the reaction product of ortho-toluidine and formaldehyde.
    Type: Grant
    Filed: June 15, 1984
    Date of Patent: January 7, 1986
    Assignee: Amchem Products, Inc.
    Inventors: Mark B. Knaster, Carmen M. Carandang
  • Non-volatile hot stripper
    Patent number: 4366002
    Abstract: An aqueous alkaline composition having increased effectiveness and bath life when used at elevated temperatures to remove siccative coatings from substrates coated therewith containing one or more alkaline compounds and at least two of the following three materials: tetrahydrofurfuryl alcohol, an ethoxylated furfuryl alcohol and an ethoxylated tetrahydrofurfuryl alcohol; and preferably containing one or more of a sequestering agent, a composition-stabilizing compound, and a surfactant.
    Type: Grant
    Filed: October 13, 1981
    Date of Patent: December 28, 1982
    Assignee: Amchem Products, Inc.
    Inventor: Carmen M. Carandang