Ralph A. Franke

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Richmond, VA, US

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Patents Grantslast 30 patents

Information Patent Grant
Nonwoven sheet products made from plexifilamentary film fibril webs
- Patent number 6,070,635
- Issue date Jun 6, 2000
- E. I. Du Pont de Nemours and Company
- Ralph A. Franke
- D04 - BRAIDING LACE-MAKING KNITTING TRIMMINGS NON-WOVEN FABRICS
Information Patent Grant
Nonwoven sheet products made from plexifilamentary film fibril webs
- Patent number 5,863,639
- Issue date Jan 26, 1999
- E. I. Du Pont de Nemours and Company
- Ralph A. Franke
- D04 - BRAIDING LACE-MAKING KNITTING TRIMMINGS NON-WOVEN FABRICS
Information Patent Grant
Process for modifying porosity in sheet made from flash spinning ol...
- Patent number 5,833,900
- Issue date Nov 10, 1998
- E. I. Du Pont de Nemours and Company
- Ralph A. Franke
- D04 - BRAIDING LACE-MAKING KNITTING TRIMMINGS NON-WOVEN FABRICS
Information Patent Grant
Spinneret with slotted outlet
- Patent number 5,788,993
- Issue date Aug 4, 1998
- E. I. Du Pont de Nemours and Company
- Michael Allen Bryner
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING