Charles F. De Long

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Washington, DC, US

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Patents Grantslast 30 patents

Information Patent Grant
Anti-fouling overcoating composition and use thereof
- Patent number 4,273,833
- Issue date Jun 16, 1981
- United States Trading International, Inc.
- Charles F. De Long
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Grant
Method of repelling animals and birds
- Patent number 4,169,902
- Issue date Oct 2, 1979
- United States Trading International, Inc.
- Charles F. De Long
- C05 - FERTILISERS MANUFACTURE THEREOF
Information Patent Grant
Method of reducing loss of water by transpiration and composition t...
- Patent number 4,094,845
- Issue date Jun 13, 1978
- United States Trading International, Inc.
- Charles F. De Long
- C05 - FERTILISERS MANUFACTURE THEREOF
Information Patent Grant
Method of reducing fouling of marine structures and coated structur...
- Patent number 4,082,884
- Issue date Apr 4, 1978
- United States Trading International, Inc.
- Charles F. De Long
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Grant
Method for preserving porous inorganic substrates
- Patent number 4,049,869
- Issue date Sep 20, 1977
- United States Trading International, Inc.
- Charles F. De Long
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES