Patents by Inventor Eileen Smith

Eileen Smith 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: 4497725
    Abstract: The present invention relates to aqueous alkaline bleach compositions containing hydrogen peroxide. Under alkaline conditions, it is particularly difficult to prevent the hydrogen peroxide decomposing excessively rapidly during storage, but the addition of an alkaline additive minimizes any change in the pH of washing solutions obtained by dissolution of generally bleach free washing compositions containing anionic surfactants. Hydrogen peroxide-containing aqueous alkaline bleach having acceptable peroxide stability can be obtained by employing ethanol or isopropanol in conjunction with a phosphonate, especially ethylene (diamino tetramethylene phosphonate,) particularly with a polyhydroxy carboxylate, preferably gluconate, or an amino acetate. The liquid bleach can contain a small proportion of a surfactant.
    Type: Grant
    Filed: February 22, 1982
    Date of Patent: February 5, 1985
    Assignee: Interox Chemicals Ltd.
    Inventors: Eileen Smith, Doreen A. Timperley, Dorothy M. Titchener
  • Patent number: 4347149
    Abstract: The present invention relates to aqueous alkaline bleach compositions containing hydrogen peroxide. Under alkaline conditions, it is particularly difficult to prevent the hydrogen peroxide decomposing excessively rapidly during storage, but the addition of an alkaline additive minimizes any change in the pH of washing solutions obtained by dissolution of generally bleach free washing compositions containing anionic surfactants. Hydrogen peroxide-containing aqueous alkaline bleach having acceptable peroxide stability can be obtained by employing an alcohol, preferably ethanol, in conjunction with a phosphonate, especially ethylene (diamino tetramethylene phosphonate,) particularly with a polyhydroxy carboxylate, preferably gluconate, or an amino acetate. The liquid bleach can contain a small proportion of a surfactant.
    Type: Grant
    Filed: March 18, 1981
    Date of Patent: August 31, 1982
    Assignee: Interox Chemicals Limited
    Inventors: Eileen Smith, Doreen A. Timperley, Dorothy M. Titchener
  • Patent number: 4269725
    Abstract: The present invention provides washing compositions in which all or part of the detergent builder salt is provided by a mixture of zeolites 13X and 4A. Preferably the weight ratio of 13X to 4A is in the range of 50:50 to 85:15 and especially from 65:35 to 85:15. Especially in the preferred ranges of weight ratios the mixtures are generally more effective at total hardness removal from the wash water than would be expected from the hardness removing capabilities of the zeolites 13X and 4A by themselves, leading to improved washing performance of the composition. In some particularly desirable embodiments part of the builder salt comprises STPP, and in others a minor part of the builder salt comprises a glassy phosphate, preferably together with an ethyleneamine (methylenephosphonic acid) complexing builder salt.The compositions of the present invention are suitable for cleaning, in particular, fabrics or hard surfaces.
    Type: Grant
    Filed: April 3, 1978
    Date of Patent: May 26, 1981
    Assignee: Laporte Industries Limited
    Inventors: Eileen Smith, David A. Morgan