Patents by Inventor Paul F. D'Angelo

Paul F. D'Angelo 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: 5925603
    Abstract: Concentrated mixtures of three or more surfactants dissolved or dispersed in a stable form in water and which contain an acyl isethionate, an imidazoline surfactant, and at least one additional anionic surfactant are provided.
    Type: Grant
    Filed: December 15, 1997
    Date of Patent: July 20, 1999
    Assignee: Rhodia Inc.
    Inventor: Paul F. D'Angelo
  • Patent number: 5641411
    Abstract: A method of detoxifying biocide which is toxic to aquatic life comprising contacting said biocide with a water soluble organic thiol compound. Applications of the method are primarily for biocide spills or for industrial effluents which comprise biocide and must be detoxified prior to release into the environment, and must pass a photoluminescent bacterial assay. Kits are also disclosed.
    Type: Grant
    Filed: July 15, 1996
    Date of Patent: June 24, 1997
    Assignee: Rohm and Haas Company
    Inventors: Terry M. Williams, Paul F. D. Reeve
  • Patent number: 5342836
    Abstract: A method of protecting 3-isothiazolones of the formula: ##STR1## wherein Y is (C.sub.1 -C.sub.18)alkyl or (C.sub.3 -C.sub.12)cycloalkyl each optionally substituted with one or more of hydroxy, halo, cyano, alkylamino, dialkylamine, arylamino, carboxy, carbalkoxy, alkoxy, aryloxy, alkylthio, arylthio, haloalkoxy, cycloaklylamino, carbamoxy, or isothiazolonyl; an unsubstituted or halo-substituted (C.sub.2 -C.sub.8)alkenyl or alkynyl; a (C.sub.7 -C.sub.10)aralkyl optionally substituted with one or more of halogen, (C.sub.1 -C.sub.4)alkyl or (C.sub.1 -C.sub.4)alkoxy; and an aryl optionally substituted with one or more of halogen, nitro, (C.sub.1 -C.sub.4)alkyl, (C.sub.1 -C.sub.4)alkyl-acylamino, carb(C.sub.1 -C.sub.4)alkoxy or sulfamyl; and R and R.sup.1 is each independently H, halogen (C.sub.1 -C.sub.4)alkyl, (C.sub.4 -C.sub.
    Type: Grant
    Filed: August 11, 1992
    Date of Patent: August 30, 1994
    Assignee: Rohm and Haas Company
    Inventor: Paul F. D. Reeve
  • Patent number: 5210094
    Abstract: A method of protecting 3-isothiazolones of the formula: ##STR1## wherein Y is (C.sub.1 -C.sub.18)alkyl or (C.sub.3 -C.sub.12)cycloalkyl each optionally substituted with one or more of hydroxy, halo, cyano, alkylamino, dialkylamine, arylamino, carboxy, carbalkoxy, alkoxy, aryloxy, alkylthio, arylthio, haloalkoxy, cycloaklylamino, carbamoxy, or isothiazolonyl; an unsubstituted or halo-substituted (C.sub.2 -C.sub.8) alkenyl or alkynyl; a (C.sub.7 -C.sub.10)aralkyl optionally substituted with one or more of halogen, (C.sub.1 -C.sub.4)alkyl or (C.sub.1 -C.sub.4)alkoxy; and an aryl optionally substituted with one or more of halogen, nitro, (C.sub.1 -C.sub.4)alkyl, (C.sub.1 -C.sub.4)alkyl-acylamino, carb(C.sub.1 -C.sub.4)alkoxy or sulfamyl; and R and R.sup.1 is each independently H, halogen (C.sub.1 -C.sub.4) alkyl, (C.sub.4 -C.sub.
    Type: Grant
    Filed: March 25, 1991
    Date of Patent: May 11, 1993
    Assignee: Rohm and Haas Company
    Inventor: Paul F. D. Reeve
  • Patent number: 4273584
    Abstract: Detergent resistant compositions made by blending (I) a hydroxy-terminated polydimethylsiloxane, (II) an amino-polysilane, and (III) an optionally partially hydrolyzed organotrialkoxysilane can be employed in such end-use applications as car polishes and vinyl protectants.
    Type: Grant
    Filed: December 7, 1979
    Date of Patent: June 16, 1981
    Assignee: Union Carbide Corporation
    Inventors: Paul F. D'Angelo, Richard B. Metzler
  • Patent number: 4142032
    Abstract: A process is provided for achieving significant improvements in the barrier properties of polymeric articles, such as films and containers, by surface treatment with both fluorine and bromine. The process is conducted at moderate temperatures, short treatment times and near one atmosphere pressure.
    Type: Grant
    Filed: December 29, 1977
    Date of Patent: February 27, 1979
    Assignee: Union Carbide Corporation
    Inventor: Paul F. D'Angelo