Patents by Inventor Theo J. Osinga

Theo J. Osinga 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).

  • Granules based on silicate antiredeposition agent mixtures and method for manufacturing same
    Patent number: 5998360
    Abstract: Soluble alkali metal silicates combined with antiredeposition agents can actually have a beneficial effect on bleach stabilisation if said antiredeposition agents are intimately mixed with an alkali metal silicate solution, the resulting product being then dried (spray drying, turbo drying, etc . . . ) into granules.
    Type: Grant
    Filed: April 13, 1998
    Date of Patent: December 7, 1999
    Assignee: Crosfield Limited
    Inventors: Keith R Cockett, Theo J Osinga
  • Aluminosilicates and detergent composition
    Patent number: 5512266
    Abstract: Aluminosilicates in the form of P type zeolites are used as detergency builders and have a silicon to aluminium ratio not greater than 1.33, preferably above 0.9. These zeolites will usually have a calcium binding capacity of at least 150 mg CaO per gram of anhydrous aluminosilicate. A preferred form of the zeolite P has a silicon to aluminium ratio up to 1.15, and preferably above 0.9, with a tetragonally distorted cubic crystal structure. A process of the preparation of these zeolite P builders is described.
    Type: Grant
    Filed: September 7, 1994
    Date of Patent: April 30, 1996
    Assignee: Unilever Patent Holdings BV
    Inventors: Graham T. Brown, Theo J. Osinga, Michael J. Parkingston, Andrew T. Steel
  • Type B aluminosilicates with low Si:Al ratio for detergent use
    Patent number: 5374370
    Abstract: Aluminosilicates in the form of P type zeolites are used as detergency builders and have a silicon to aluminium ratio not greater than 1.33, preferably above 0.9. These zeolites will usually have a calcium binding capacity of at least 150 mg CaO per gram of anhydrous aluminosilicate. A preferred form of the zeolite P has a silicon to aluminium ratio up to 1.15, and preferably above 0.9, with a tetragonally distorted cubic crystal structure. A process of the preparation of these zeolite P builders is described.
    Type: Grant
    Filed: February 2, 1993
    Date of Patent: December 20, 1994
    Assignee: Unilever Patent Holdings B.V.
    Inventors: Graham T. Brown, Theo J. Osinga, Michael J. Parkingston, Andrew T. Steel
  • Granular alkali metal silicate production
    Patent number: 5340559
    Abstract: Alkali metal silicate solutions are formed into granules in a single stage. The heated solution is sprayed into a heated drum having a multiplicity of arms fixed to a rapid by rotating central shaft. A gas, preferably air, heated to 150.degree. C. to 200.degree. C. is also introduced with the silicate solution and a granulated product is obtained from the other end of the drum.
    Type: Grant
    Filed: July 2, 1992
    Date of Patent: August 23, 1994
    Assignee: Unilever Patent Holdings B.V.
    Inventors: Francois Delwel, Theo J. Osinga, Joseph P. Theunissen, Jack M. Vrancken