Patents by Inventor Alan Phillip Davies

Alan Phillip Davies 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).

  • Preparation of laundry detergent tablets
    Patent number: 5916866
    Abstract: In a process for making detergent tablets comprising spraying a coating of a water-soluble organic polymeric binder onto the exterior of particles of detergent composition containing detergent active and detergency builder and compacting the composition, the improvement comprises spraying an external coating of a film-forming water-soluble organic polymer onto the tablets. The coating on the tablet exterior reduces friability and abrasion and provides extra enhancement of strength while permitting disintegration/dissolution in a wash liquor.
    Type: Grant
    Filed: June 25, 1997
    Date of Patent: June 29, 1999
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Alan Phillip Davies, Sara Jane Edwards, Douglas Wraige
  • Production of detergent tablet compositions
    Patent number: 5658874
    Abstract: Detergent tablets, compacted from detergent powder containing detergent active and detergency builder, contain a polymer which acts as binder and as a disintegrant when the tablets are added to water. Preferably the binder is sprayed into the powder before compaction. The strength of such tablets is improved, without detriment to other properties, by tabletting at a temperature above ambient but below melting point of the polymeric binder. Preferably the temperature is only 5.degree. C. to 10.degree. C. below the melting point of the binder.
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: August 19, 1997
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Alan Phillip Davies, Sara Jane Edwards, Pauline Farnworth, Douglas Wraige