Patents by Inventor Ian P. McKeown

Ian P. McKeown 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).

  • Stabilising Beverages
    Publication number: 20100021601
    Abstract: A process for stabilising a beverage against haze formation comprising treating the beverage with a stabilising agent comprising a particulate silica having a mean pore diameter of at least 6 nm and which has been modified by interaction with a water-soluble polymer having pendant pyrrolidone groups, the polymer being present on the silica in an amount from 5 to 35 percent by weight with respect to anhydrous weight of silica.
    Type: Application
    Filed: October 5, 2009
    Publication date: January 28, 2010
    Applicant: PQ Silicas Limited
    Inventors: Graham J. Earl, Ian P. McKeown
  • Stabilising beverages
    Publication number: 20040062835
    Abstract: A process for stabilising a beverage against haze formation comprises treating the beverage with a stabilising agent comprising a particulate silica having a mean pore diameter of at least 6 nm and which has been modified by interaction with a water-soluble polymer having pendant pyrrolidone groups, the polymer being present on the silica in an amount from 5 to 35 per cent by weight with respect to anhydrous weight of silica.
    Type: Application
    Filed: July 18, 2003
    Publication date: April 1, 2004
    Inventors: Graham J. Earl, Ian P. McKeown
  • Silicas
    Patent number: 5637636
    Abstract: An amorphous silica has a pore size distribution wherein 90% of the pores have a diameter above 15 nanometers, and less than 20% of the pore volume is in pores having a pore diameter between 10 and 20 nanometers, the amorphous silica having a CTAB surface area of less than 100 m.sup.2 /g, the amorphous silica having a matting efficiency of below 20 gloss units at an incidence angle of 60.degree. and a loading of 5% by weight. It can be prepared by a precipitation route. It is used in thixotropic paints and lacquers.
    Type: Grant
    Filed: June 15, 1995
    Date of Patent: June 10, 1997
    Assignee: Crosfield Limited
    Inventors: Simon Cartwright, Ian P. McKeown, Peter W. Stanier
  • Silicas for use in transparent toothpaste compositions
    Patent number: 5512271
    Abstract: Amorphous silicas suitable for use as abrasives in transparent toothpastes can be prepared by a precipitation route. These silicas are distinguished by having a BET surface area of 100 to 450 m.sup.2 /g, a weight mean particle size of 5 to 15 microns, a plastics abrasion value of 16 to 26, a mean pore diameter from 2 to 12 nm, a transmission of at least 70% in the refractive index range from 1.430 to 1.443 and an oil absorption in the range from about 70 to about 130 cm.sup.3 /g.
    Type: Grant
    Filed: July 5, 1994
    Date of Patent: April 30, 1996
    Assignee: Unilever Patent Holdings BV
    Inventors: Ian P. McKeown, Peter W. Stanier
  • Silica products
    Patent number: 5326395
    Abstract: A silica matting agent has a wax coating comprising a mixture of three waxes, i.e. hard microcrystalline, plasticising monocrystalline and synthetic polyethylene. The use of this ternary mixture gives the matting agent improved interaction with lacquers and improved sedimentation.
    Type: Grant
    Filed: November 6, 1992
    Date of Patent: July 5, 1994
    Assignee: Unilever Patent Holdings B.V.
    Inventors: Derek Aldcroft, Ian P. McKeown, Bryan Rogers, Peter W. Stanier