Inventor · disambiguated record
Charles Michael Gryba
Also filed as: GRYBA CHARLES M · GRYBA CHARLES MICHAEL
3 granted patents·91 citations·filing 1993–2012
73Inventor score
Technology areasE02D
Top patents by PatentIndex Score
3 records- 0180US5522676AUndercut excavation method998492 ONTARIO INC·Filed 1993·Granted Jun 4, 1996·52 cites·25 claims
- 0268US5944453AUndercut excavation with protection against seismic events or excessive ground movement998492 ONTARIO INC·Filed 1998·Granted Aug 31, 1999·35 cites·19 claims
- 0365US9151047B2Undercut excavation method with continuous concrete floors2341451 ONTARIO INC·Filed 2012·Granted Oct 6, 2015·4 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →