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Philip Graceffa
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Newtonville, MA, US
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last 30 patents
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Patent Grant
Treatment of asbestos and silicates to reduce their toxicity
Patent number
5,154,903
Issue date
Oct 13, 1992
Massachusetts General Hospital
Philip J. Graceffa
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Patent Grant
Treatment of asbestos
Patent number
4,474,742
Issue date
Oct 2, 1984
Boston Biomedical Research Institute, Inc.
Philip Graceffa
C01 - INORGANIC CHEMISTRY