Patents by Inventor Joseph C. Petrille

Joseph C. Petrille 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).

  • Methods for controlling macroinvertebrates in aqueous systems
    Patent number: 5900157
    Abstract: Methods for controlling the fouling potential of macroinvertebrates are provided. An effective controlling amount of a polymer comprising a tannin and a cationic monomer is added to an aqueous system suffering from the fouling potential of macroinvertebrates.
    Type: Grant
    Filed: July 18, 1997
    Date of Patent: May 4, 1999
    Assignee: BetzDearborn Inc.
    Inventors: Joseph C. Petrille, Michael W. Werner
  • Detoxification of alkylthioalkylamines with swelling type natural or synthetic clays
    Patent number: 5632899
    Abstract: The present invention is directed to methods of detoxifying water containing alkylthioalkylamine compounds. The methods comprise adding to an aqueous system containing alkylthioalkylamines, a sufficient quantity of a swelling type natural or synthetic clay to neutralize the toxicity associated with alkylthioalkylamines to aquatic organisms.
    Type: Grant
    Filed: July 20, 1995
    Date of Patent: May 27, 1997
    Assignee: BetzDearborn Inc.
    Inventors: Joseph C. Petrille, III, Michael W. Werner, Wilson K. Whitekettle
  • Methods of detoxifying quaternary ammonium compounds toward aquatic organisms
    Patent number: 5518636
    Abstract: The present invention is directed to a method of detoxifying water containing quaternary ammonium compounds to the extent that aquatic life such as fish and macroinvertebrates are protected. The method comprises adding to an aqueous system including a quaternary ammonium compound a sufficient quantity of a de-oiled lecithin. De-oiled lecithin is a mixture of phosphatides with about 2% or less residual oil.
    Type: Grant
    Filed: April 21, 1995
    Date of Patent: May 21, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: Joseph C. Petrille, III, Michael W. Werner
  • Detoxification for quaternary ammonium compounds with lignosulfonates
    Patent number: 5486296
    Abstract: Detoxification of quaternary ammonium compounds using detoxifying amounts of lignosulfonate.
    Type: Grant
    Filed: March 1, 1995
    Date of Patent: January 23, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: Joseph C. Petrille, III, Stephen R. Vasconcellos, Michael W. Werner
  • Methods for controlling asiatic clams
    Patent number: 5468739
    Abstract: Methods for controlling the fouling potential of Asiatic clams in aqueous systems are provided. The methods comprise adding to the aqueous system an effective controlling amount of a tetraalkyl phosphonium salt compound. The preferred compound is tri-butyltetradecyl phosphonium chloride.
    Type: Grant
    Filed: October 31, 1994
    Date of Patent: November 21, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: Wilson K. Whitekettle, Joseph C. Petrille, Michael W. Werner