Richard L. Bertram

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Hollywood, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Deteriorated structure repair method for restoring and lining corro...
- Patent number 6,494,978
- Issue date Dec 17, 2002
- Richard L. Bertram
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Structural strength coating and material
- Patent number 5,389,692
- Issue date Feb 14, 1995
- Richard L. Bertram
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Deteriorated structure repair method and substratum for restoring a...
- Patent number 5,268,392
- Issue date Dec 7, 1993
- Richard L. Bertram
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Corrosion resistant coating and liner combination
- Patent number 4,792,493
- Issue date Dec 20, 1988
- Richard L. Bertram
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES