Douglas K. Chick

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Elstree, GB

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Patents Grantslast 30 patents

Information Patent Grant
Method of installation of dual containment pipe rehabilitation system
- Patent number 5,778,938
- Issue date Jul 14, 1998
- Insituform (Netherlands) B.V.
- Douglas K. Chick
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Dual containment pipe rehabilitation system and method of installation
- Patent number 5,743,299
- Issue date Apr 28, 1998
- Insituform (Netherland) B.V.
- Douglas K. Chick
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Dual containment pipe rehabilitation system
- Patent number 5,546,992
- Issue date Aug 20, 1996
- Insituform (Netherlands) B.V.
- Douglas K. Chick
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Method for remote lining of side connections
- Patent number 4,434,115
- Issue date Feb 28, 1984
- Insituform International, Inc.
- Douglas K. Chick
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL