Patents by Inventor Edwin Stevens

Edwin Stevens 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).

  • Compositions and methods for use in cleaning textiles
    Patent number: 6172031
    Abstract: The present invention relates to compositions and methods of removal of contaminants from textiles and related fabrics and garments. The present cleaning compositions contain at least one vegetable oil ester or fatty acid ester and a surfactant in combination with water and rinse compositions which are also preferably employed in a method aspect comprise at least one glycol ether or glycol acetate and water.
    Type: Grant
    Filed: October 17, 1997
    Date of Patent: January 9, 2001
    Inventor: Edwin Stevens
  • Paint stripping compositions and methods
    Patent number: 5597788
    Abstract: The present invention relates to light and heat reactive paint or polymer stripping compositions preferably employing biodegradable components such as conjugated terpenes and related polyenes in combination with an alcohol such as a phenyl substituted benzyl alcohol for use in removing polymeric materials from substrates, in particular, cured paint from hard and/or flexible surfaces. The compositions avoid the use of methylene chloride, phenol, corrosives and caustics, methanol, toluol or acetone. Compositions according to the present invention preferably have flash points above about 49.degree. C. (about 120.degree. F.) and a pH which is preferably neutral.Methods of stripping polymeric coatings from surfaces and methods of making these compositions are also described.
    Type: Grant
    Filed: June 19, 1995
    Date of Patent: January 28, 1997
    Inventor: Edwin Stevens
  • Paint stripping compositions and methods
    Patent number: 5427710
    Abstract: The present invention relates to light and heat reactive paint or polymer stripping compositions preferably employing biodegradable components such as conjugated terpenes and related polyenes in combination with an alcohol such as a phenyl substituted benzyl alcohol for use in removing polymeric materials from substrates, in particular, cured paint from hard and/or flexible surfaces. The compositions avoid the use of methylene chloride, phenol, corrosives and caustics, methanol, toluol or acetone. Compositions according to the present invention preferably have flash points above about 49.degree. C. (about 120.degree. F.) and a pH which is preferably neutral. Methods of stripping polymeric coatings from surfaces and methods of making these compositions are also described.
    Type: Grant
    Filed: April 14, 1994
    Date of Patent: June 27, 1995
    Inventor: Edwin Stevens
  • Photoreactive paint stripping compositions and methods
    Patent number: 5425893
    Abstract: The present invention relates to photo-reactive substantially non-toxic, non-flammable safe compositions employing primarily biodegradable components such as conjugated terpenes and related polyenes in combination with solubilizing alcohol for use in removing polymeric materials from substrates, in particular, cured paint from hard and/or flexible surfaces. The compositions avoid the use of methylene chloride, phenol, corrosives and caustics, methanol, toluol or acetone. Compositions according to the present invention preferably have flash points above about 49.degree. C. (about 120.degree. F.) and a pH which is preferably less than about 9. Methods of stripping polymeric coatings from surfaces and methods of making these compositions are also described.
    Type: Grant
    Filed: April 14, 1993
    Date of Patent: June 20, 1995
    Inventor: Edwin Stevens
  • Paint stripper and varnish remover compositions, methods for making these compositions and methods for removing paint and other polymeric coatings from flexible and inflexible surfaces
    Patent number: 5288335
    Abstract: The present invention relates to non-toxic, non-flammable, safe compositions employing primarily biodegradable components for use in removing and stripping paint, varnishes and stains from hard and/or flexible surfaces. The compositions avoid the use of methylene chloride, methanol, toluol or acetone. Paint stripper compositions of the present invention have flash points above about 120.degree. F. and an absence of low-boiling VOC's comprising:a. about 10% to about 60% by weight of a terpene compound containing at least 10 carbon atoms;b. about 10% to about 50% by weight of N-methyl pyrrolidone or its equivalent; andc. about 2% to about 20% by weight of a terpene emulsifying surfactant.Compositions of the present invention may further comprise at least one of the following: about 5% to about 15% by weight of a solvent extender or bulking agent, about 10% to about 60% of a high flash point, high K.sub.
    Type: Grant
    Filed: June 22, 1992
    Date of Patent: February 22, 1994
    Assignee: Stevens Sciences Corp.
    Inventor: Edwin Stevens
  • Paint stripper and varnish remover compositions containing organoclay rheological additives, methods for making these compositions and methods for removing paint and other polymeric coatings from flexible and inflexible surfaces
    Patent number: 5167853
    Abstract: The present invention relates to non-toxic, non-flammable, safe compositions employing primarily biodegradable components for use in removing and stripping paint, varnishes and stains from hard and/or flexible surfaces. The compositions generally avoid the use of methylene chloride, methanol, toluol or acetone.Paint stripper compositions of the present invention have flash points above about 120.degree. F. and an absence of low-boiling VOC's comprising:a. about 0% to about 60% by weight of a terpene compound containing at least 10 carbon atoms;b. about 10% to about 69% by weight of N-methyl pyrrolidone or its equivalent; andc. about 0% to about 20% by weight of an emulsifying surfactant.Compositions of the present invention may further comprise one or more of the following: about 5% to about 15% by weight of a solvent extender or bulking agent, about 5% to about 60% of a high flash point, high K.sub.
    Type: Grant
    Filed: December 31, 1991
    Date of Patent: December 1, 1992
    Assignee: Stevens Sciences, Corp.
    Inventor: Edwin Stevens
  • Paint stripper and varnish remover compositions, methods for making these compositions and methods for removing paint and other polymeric coatings from flexible and inflexible surfaces
    Patent number: 5124062
    Abstract: The present invention relates to non-toxic, non-flammable, safe compositions employing primarily biodegradable components for use in removing and stripping paint, varnishes and stains from hard and/or flexible surfaces. The compositions avoid the use of methylene chloride, methanol, toluol or acetone. Paint stripper compositions of the present invention have flash points above about 120.degree. F. and an absence of low-boiling VOC's comprising:a. about 10% to about 60% by weight of a terpene compound containing at least 10 carbon atoms;b. about 10% to about 50% by weight of N-methyl pyrrolidone or its equivalent; andc. about 2% to about 20% by weight of a terpene emulsifying surfactant.Compositions of the present invention may further comprise at least one of the following: about 5% to about 15% by weight of a solvent extender or bulking agent, about 10% to about 60% of a high flash point, high K.sub.
    Type: Grant
    Filed: April 22, 1991
    Date of Patent: June 23, 1992
    Assignee: Stevens Sciences Corp.
    Inventor: Edwin Stevens
  • Paint stripper and varnish remover compositions containing organoclay rheological additives, methods for making these compositions and methods for removing paint and other polymeric coatings from flexible and inflexible surfaces
    Patent number: 5098591
    Abstract: The present invention relates to non-toxic, non-flammable, safe compositions employing primarily biodegradable components for use in removing and stripping paint, varnishes and stains from hard and/or flexible surfaces. The compositions generally avoid the use of methylene chloride, methanol, toluol or acetone.Paint stripper compositions of the present invention have flash points above about 120.degree. F. and an absence of low-boiling VOC's comprising:a. about 0% to about 60% by weight of a terpene compound containing at least 10 carbon atoms;b. about 10% to about 69% by weight of N-methyl pyrrolidone or its equivalent; andc. about 0% to about 20% by weight of an emulsifying surfactant.Compositions of the present invention may further comprise one or more of the following: about 5% to about 15% by weight of a solvent extender or bulking agent, about 5% to about 60% of a high flash point, high K.sub.
    Type: Grant
    Filed: February 5, 1990
    Date of Patent: March 24, 1992
    Assignee: Stevens Sciences Corp.
    Inventor: Edwin Stevens