Patents by Inventor Madeline P. Simpson

Madeline P. Simpson 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).

  • Machine dishwashing detergent having a reduced condensed phosphate content
    Patent number: 5268119
    Abstract: The present invention is based upon the discovery that high levels of carbonate salts can be formulated with minor concentrations of phosphates (e.g., about 0.1 to 0.3 percent by weight as expressed as (P.sub.2 O.sub.5) ion) together with low levels of polycarboxylate homopolymers and copolymers (i.e., about 0.5 to 5.0 percent by weight) in a dishwashing detergent formulation while providing satisfactory cleaning without unacceptable spotting and filming and without the need to add a chlorinating agent.
    Type: Grant
    Filed: October 11, 1991
    Date of Patent: December 7, 1993
    Assignee: Church & Dwight Co., Inc.
    Inventors: Madeline P. Simpson, Raymond S. Brown, Anthony Winston, Louis Kubian
  • Deodorized carpets and process for producing same
    Patent number: 5254386
    Abstract: The present invention relates to a self-deodorizing carpet and to a deodorizing composition used in the production of a tufted carpet floor covering material. More particularly, the present invention relates to the use of a particular bicarbonate-containing solution containing a water soluble latex for the treatment of tufted carpet floor covering products to impart self-deodorizing properties thereto.
    Type: Grant
    Filed: May 10, 1991
    Date of Patent: October 19, 1993
    Assignee: Church & Dwight Co., Inc.
    Inventors: Madeline P. Simpson, Raymond S. Brown
  • Non-phosphate machine dishwashing detergents
    Patent number: 5152911
    Abstract: The present invention is based upon the discovery that high levels of carbonate salts can be formulated together with low levels of a mixture of certain polycarboxylate homopolymers and copolymers (i.e., in combination, a total of about 0.5 to 8.0 percent by weight), and relatively high levels of nonionic surfactants in a dishwashing detergent formulation while providing satisfactory cleaning without unacceptable spotting and filming and without the need to add phosphates and/or a chlorinating agent.
    Type: Grant
    Filed: October 11, 1991
    Date of Patent: October 6, 1992
    Assignee: Church & Dwight Co., Inc.
    Inventors: Lenore E. Savio, Madeline P. Simpson, Raymond S. Brown
  • Low-phosphate machine dishwashing detergents
    Patent number: 5152910
    Abstract: The present invention is based upon the discovery that high levels of carbonate salts can be formulated with minor concentrations of phosphates (e.g., about 0.1 to 0.3 percent by weight as expressed as (P.sub.2 O.sub.5) together with low levels of a mixture of certain polycarboxylate homopolymers and copolymers (i.e., in combination, a total of about 0.5 to 8.0 percent by weight), and relatively high levels of nonionic surfactants in a dishwashing detergent formulation while providing satisfactory cleaning without unacceptable spotting and filming and without the need to add a chlorinating agent.
    Type: Grant
    Filed: October 11, 1991
    Date of Patent: October 6, 1992
    Assignee: Church & Dwight Co., Inc.
    Inventors: Lenore E. Savio, Madeline P. Simpson, Raymond S. Brown