Robert F. Heyl

Person

  • Kingwood, TX, US

Patents Grantslast 30 patents

  • Information Patent Grant

    Process for disposing of sewage sludge

    • Patent number 5,273,556
    • Issue date Dec 28, 1993
    • Texaco Inc.
    • Matthew A. McMahon
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Process for disposing of sewage sludge

    • Patent number 5,266,085
    • Issue date Nov 30, 1993
    • Texaco Inc.
    • Matthew A. McMahon
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE