Patents by Inventor Anthony James Steventon

Anthony James Steventon 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).

  • Publication number: 20040186035
    Abstract: The present invention relates to a water-soluble liquid-containing pouch wherein the water-soluble pouch is made from a film comprising a co-polymer of dicarboxylic acid, preferably itaconic acid, and wherein the liquid contained within the pouch comprises dissolved ionic components selected from the group consisting of carboxylates, phosphonates, and mixtures thereof.
    Type: Application
    Filed: March 19, 2003
    Publication date: September 23, 2004
    Applicant: The Procter & Gamble Company
    Inventors: James Pyott Johnston, Anthony James Steventon
  • Patent number: 6129906
    Abstract: A spray-dried, granular powder comprising: (i) from about 50% to about 99% of a water-soluble carrier, (ii) from about 1% to about 50% of a hydrophobic silicone oil dispersed within the carrier, wherein the spray-dried powder has a volume average particle size in the range from about 20 .mu.m to about 500 .mu.m, the powder being prepared by spray-drying an aqueous dispersion of the silicone oil and the water-soluble carrier, characterized in that the silicone oil is present in the dispersion in the form of discrete droplets having a volume average droplet size in the range from about 0.5 .mu.m to about 20 .mu.m and that the ratio of the average spray-dried particle size to the average droplet size is at least about 2.5:1. The powder is dry, free-flowing and processable into a punched tablet or other compressed forms, yet efficiently delivers the silicone oil on subsequent dissolution in water.
    Type: Grant
    Filed: October 2, 1998
    Date of Patent: October 10, 2000
    Assignee: The Procter & Gamble Company
    Inventor: Anthony James Steventon