Patents by Inventor Poul L. Rasmussen

Poul L. Rasmussen 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).

  • Dry cement composition
    Patent number: 4784691
    Abstract: A dry cement composition containing an amount of ferrous sulphate (FS) for eliminating or substantially reducing the content of water-soluble chromate, is produced by grinding a starting material (C, G) in a cement mill, and the ground cement material is passed from the mill to a storage container (33) The ferrous sulphate in an amount of 0.01-10 and preferably 0.4 percent by weight is added to and mixed with the starting material in a dry or non-dissolved condition at a location or at locations upstreams of the storage container (33). The ferrous sulphate is preferably added to the starting material upstream of the cement mill.
    Type: Grant
    Filed: July 21, 1987
    Date of Patent: November 15, 1988
    Assignee: Aktieselskabet Aalborg Portland - Cement - Fabrik
    Inventor: Poul L. Rasmussen
  • Method for reducing chromate dermatitis
    Patent number: 4572739
    Abstract: A dry cement composition containing an amount of ferrous sulphate (FS) for eliminating or substantially reducing the content of water-soluble chromate, is produced by grinding a starting material (C, G) in a cement mill, and the ground cement material is passed from the mill to a storage container (33). The ferrous sulphate in an amount of 0.01-10 and preferably 0.4 percent by weight is added to and mixed with the starting material in a dry or non-dissolved condition at a location or at locations upstreams of the storage container (33). The ferrous sulphate is preferably added to the starting material upstream of the cement mill.
    Type: Grant
    Filed: June 6, 1984
    Date of Patent: February 25, 1986
    Inventor: Poul L. Rasmussen