Franco L. Serafini

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Patents Grantslast 30 patents

Information Patent Grant
Concrete form liner
- Patent number 5,824,347
- Issue date Oct 20, 1998
- E. I. Du Pont de Nemours and Company
- Franco Luigi Serafini
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Laminated fabric useful as a concrete form liner
- Patent number 5,302,099
- Issue date Apr 12, 1994
- E. I. Du Pont de Nemours and Company
- Franco L. Serafini
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Method for attaching and bidirectionally tensioning a porous fabric...
- Patent number 5,247,730
- Issue date Sep 28, 1993
- E. I. Du Pont de Nemours and Company
- Franco L. Serafini
- E04 - BUILDING
Information Patent Grant
Fabric tensioning frame
- Patent number 5,206,981
- Issue date May 4, 1993
- E. I. Du Pont de Nemours and Company
- Franco L. Serafini
- E04 - BUILDING
Information Patent Grant
Form for patterned concrete
- Patent number 5,135,692
- Issue date Aug 4, 1992
- E. I. Du Pont de Nemours and Company
- Franco L. Serafini
- B28 - WORKING CEMENT, CLAY, OR STONE
Information Patent Grant
Fabric useful as a concrete form liner
- Patent number 5,124,102
- Issue date Jun 23, 1992
- E. I. Du Pont de Nemours and Company
- Franco L. Serafini
- B28 - WORKING CEMENT, CLAY, OR STONE