Patents by Inventor Thomas C. Friel, Jr.

Thomas C. Friel, Jr. 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).

  • Alkoxylated bis-amide defoaming compounds
    Patent number: 4960540
    Abstract: The present invention involves new anti-foam compositions which control foaming in aqueous systems and by nature of their inverse cloud point characterisitics are insoluble and particulate above their inverse cloud point, and soluble below it. This property makes them particulate non-depositing defoamers. As the defoamed aqueous system cools down these novel products become soluble, preventing insoluble material (pitch) from depositing on process equipment and matter being processed. The anitfoam composition is an alkoxylated bis-amide of the following formula: ##STR1## where R.sup.1 is ##STR2## R.sup.2 is --(CH.sub.2).sub.a --; R.sup.3 is alkyl C.sub.12 to C.sub.20 ; ##STR3## x,y,z are each independently integers from 0 to 20; a is an integer from 1 to 5;c is an integer from 0 to 5;R.sup.5 is selected from H, CH.sub.3, C.sub.2 H.sub.5, C.sub.3 H.sub.6.
    Type: Grant
    Filed: August 24, 1989
    Date of Patent: October 2, 1990
    Inventors: Thomas C. Friel, Jr., Anthony J. O'lenick, Jr.
  • Particulate defoaming compositions
    Patent number: 4956119
    Abstract: The present invention involves new anti-foam compositions which control foaming in aqueous systems and by nature of their unique cloud point characteristics are insoluble and particulate above their inverse cloud point, and soluble below it. This property makes them particulate non-depositing defoamers. As the defoamed aqueous system cools down these novel products become soluble, preventing insoluble material (pitch) from depositing on process equipment and matter being processed.
    Type: Grant
    Filed: April 20, 1989
    Date of Patent: September 11, 1990
    Inventors: Thomas C. Friel, Jr., Anthony J. O'Lenick, Jr.
  • Novel non-depositing defoaming compositions
    Patent number: 4871483
    Abstract: The present invention involves new anti-foam compositions which control foaming in aqueous systems and by nature of their unique cloud point characteristics are insoluble and particulate above their inverse cloud point, and soluble below it. This property makes them non-depositing defoamers. As the defoamed aqueous system cools down these novel products become soluble, preventing insoluble material (pitch) from depositing on process equipment and matter being processed.
    Type: Grant
    Filed: April 16, 1987
    Date of Patent: October 3, 1989
    Assignee: GAF Corporation
    Inventors: Thomas C. Friel, Jr., Anthony J. O'Lenick