Patents Represented by Attorney O. Todd Dickinson

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  • Asphalt composition for air-blowing
    Patent number: 4338137
    Abstract: A process for air-blowing asphalt in the presence of ferrous chloride and an asphalt composition comprising a major amount of asphalt and a minor but effective amount of ferrous chloride.
    Type: Grant
    Filed: July 20, 1981
    Date of Patent: July 6, 1982
    Assignee: Chevron Research Company
    Inventor: Judson E. Goodrich