Patents Assigned to Crossfield Limited
  • Inorganic material in particles form
    Patent number: 6165510
    Abstract: A cosmetic composition includes an inorganic material in granular form which, under condition of use of the cosmetic composition, breaks down to a particle size wherein less than 5% by weight, preferably less than 2% by weight, most preferably less than 1% by weight is above 45 microns, as measured by wet sieve analysis.
    Type: Grant
    Filed: August 11, 1998
    Date of Patent: December 26, 2000
    Assignee: Crossfield Limited
    Inventors: Pamela Baines, Peter William Stanier
  • Aluminosilicates
    Patent number: 5772979
    Abstract: Process for manufacturing an alkali metal aluminosilicate of zeolite wherein zeolite P seeds are produced in situ in a first reacting gel with a SiO.sub.2 /Al.sub.2 O.sub.3 ratio of above 2.2 and it is only after the formation of zeolite P seeds, but before said seeds have the time to fully grow, that sodium aluminate is added in order to get a gel which can have a SiO.sub.2 /Al.sub.2 O.sub.3 ratio of about 2 which therefore enables producing a zeolite P having also a SiO.sub.2 /Al.sub.2 O.sub.3 ratio of about 2.
    Type: Grant
    Filed: December 19, 1996
    Date of Patent: June 30, 1998
    Assignee: Crossfield Limited
    Inventor: Abraham Araya