Patents by Inventor Alasdair Duncan McGregor

Alasdair Duncan McGregor 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).

  • Detergent tablet
    Patent number: 6770616
    Abstract: A multi-phase detergent tablet for use in a washing machine, the tablet comprising a first phase in adhesive contact with one or more second phases, and wherein at least the first phase is in the form of a compressed particulate solid incorporating a cogranulated detergency additive composition comprising polymeric polycarboxylate and inorganic carrier. The multi-phase tablets provide improved interphase adhesivity, robustness and strength together with excellent dissolution and cleaning characteristics.
    Type: Grant
    Filed: September 4, 2001
    Date of Patent: August 3, 2004
    Assignee: The Procter & Gamble Company
    Inventors: Steven Baldwin McGowan, James Iain Kinloch, Alasdair Duncan McGregor
  • Process for preparing detergent tablet
    Patent number: 6451754
    Abstract: A process for preparing a detergent tablet comprises the steps of compressing a composition comprising an active detergent component to form a compressed portion and delivering a composition comprising an active detergent component in the form of a solid, liquid or gel to the compressed portion to form a non-compressed, non-encapsulating portion.
    Type: Grant
    Filed: February 2, 2000
    Date of Patent: September 17, 2002
    Assignee: The Procter & Gamble Company
    Inventors: Barry Rowland, Alasdair Duncan McGregor, Michael Crombie Addison, Lynda Anne Speed
  • Process for making tabletted detergent compositions
    Patent number: 6177398
    Abstract: A process for making a detergent tablet suitable for use in laundry or automatic dishwashing by tabletting a detergent composition comprising solid components which form a total particulate base detergent matrix and non-aqueous liquid components having viscosity of 1000 cp or less is disclosed. The process involves the steps of applying the non-aqueous liquid components having viscosity of 1000 cp or less onto a low porosity fraction selected from the total particulate base detergent matrix.
    Type: Grant
    Filed: June 10, 1999
    Date of Patent: January 23, 2001
    Assignee: The Procter & Gamble Company
    Inventors: Alasdair Duncan McGregor, Jane Margaret Warwick
  • Process for making tabletted detergent compositions
    Patent number: 6177393
    Abstract: A process for making a detergent composition comprising solid components which form a total particulate base detergent matrix and a liquid hydrocarbon component, the process comprises the steps of applying liquid hydrocarbon onto a high porosity fraction selected from the total particulate base detergent matrix.
    Type: Grant
    Filed: June 11, 1999
    Date of Patent: January 23, 2001
    Assignee: The Procter & Gamble Company
    Inventors: Alasdair Duncan McGregor, Jane Margaret Warwick, Steven Baldwin McGowan
  • Detergent tablet
    Patent number: D420763
    Type: Grant
    Filed: May 26, 1998
    Date of Patent: February 15, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Jennifer Mary Forward, Alasdair Duncan McGregor, Rhona Alexandra Knox
  • Detergent tablet
    Patent number: D431094
    Type: Grant
    Filed: May 26, 1998
    Date of Patent: September 19, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Jennifer Mary Forward, Alasdair Duncan McGregor, Rhona Alexandra Knox