William J. O'Brien

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Ann Arbor, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Tooth color matching system
- Patent number 6,007,332
- Issue date Dec 28, 1999
- William J. O'Brien
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Method and composition for removing mercury vapor from dental resto...
- Patent number 5,242,305
- Issue date Sep 7, 1993
- William J. O'Brien
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Surface finishing apparatus and method
- Patent number 5,080,588
- Issue date Jan 14, 1992
- The University of Michigan
- William J. O'Brien
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
High expansion dental crown core ceramic composition
- Patent number 4,576,922
- Issue date Mar 18, 1986
- The Regents of the University of Michigan
- William J. O'Brien
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE