David Shonfeld

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Great Neck, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Single-use syringe with aspirating mechanism
- Patent number 6,283,941
- Issue date Sep 4, 2001
- Univec Inc.
- Joel Schoenfeld
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Hypodermic syringe having retractable needle
- Patent number 5,891,104
- Issue date Apr 6, 1999
- Univec, Inc.
- David Shonfeld
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Single-use syringe assembly including spring clip lock and plunger
- Patent number 5,562,623
- Issue date Oct 8, 1996
- Univec
- David Shonfeld
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Single use syringe assembly
- Patent number 5,531,691
- Issue date Jul 2, 1996
- Univec Inc.
- David Shonfeld
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Single use hypodermic syringe
- Patent number 5,370,620
- Issue date Dec 6, 1994
- David Shonfeld
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE