Increasing the output of a pipeline anode
Patent 4487230 Issued on December 11, 1984. Estimated Expiration Date: 
December 11, 2001. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 11, 2001. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3254012 3354063 3410313 3553094 Combined strengthening and corrosion protection of pipelines Protection of pipe against damage to insulation and/or corrosion Method and apparatus for cathodic protection Patent #: 4370211 InventorAssigneeApplicationNo. 06/329498 filed on 12/10/1981US Classes:204/196.16, Dielectric coating, casing, or section138/103, COMBINED138/105, With trench138/149, With intermediate insulation layer138/178, MISCELLANEOUS204/196.23, Anode contains aluminum204/196.25, And zinc405/159, Entrenched or buried405/172With anchoring of lineExaminersPrimary: Bryant, III, James E.Attorney, Agent or FirmInternational ClassesC23F 13/00 (20060101)C23F 13/02 (20060101) F16L 58/00 (20060101) AbstractIn the cathodic protection of tubular goods transporting fluids above 100° F. with aluminum or zinc anodes, the output efficiency of the anode is increased by thermally insulating the anode from the tubular goods on which the anode is placed. |
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