Ralph L. Davis

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Genoa City, WI, US

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Patents Grantslast 30 patents

Information Patent Grant
Needleless access device
- Patent number 6,228,069
- Issue date May 8, 2001
- Filtertek Inc.
- Steve C. Barth
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Self-priming needle-free “Y”-adapter
- Patent number 6,221,065
- Issue date Apr 24, 2001
- Filtertek Inc.
- Ralph L. Davis
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Valve apparatus and method
- Patent number 6,044,859
- Issue date Apr 4, 2000
- Ralph L. Davis
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Filter and universal adapter for use with dental aspirator tips
- Patent number 5,741,134
- Issue date Apr 21, 1998
- Filtertek Inc.
- Ralph L. Davis
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Corrugated saliva ejector
- Patent number 5,688,121
- Issue date Nov 18, 1997
- Filtertek Inc.
- Ralph L. Davis
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Needleless access device
- Patent number 5,360,413
- Issue date Nov 1, 1994
- Filtertek, Inc.
- Michael H. Leason
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE