Inventor · disambiguated record
Donald L. Roelfs
Also filed as: ROELFS DONALD L
2 granted patents·2 pending applications·81 citations·filing 2007–2011
68Inventor score
Top patents by PatentIndex Score
4 records- 0195US8070895B2Water resistant cementitious article and method for preparing sameENGBRECHT DICK C·Filed 2007·Granted Dec 6, 2011·57 cites·20 claims
- 0292US8568544B2Water resistant cementitious article and method for preparing sameENGBRECHT DICK C·Filed 2011·Granted Oct 29, 2013·24 cites·26 claims
- 0361US2010143682A1Mat-Faced Cementitious Article and Method for Preparing SameUNITED STATES GYPSUM CO·Filed 2009·Application pending·0 cites
- 0448US2009029141A1Mat-faced gypsum board and method of making thereofUNITED STATES GYPSUM CO·Filed 2008·Application pending·0 cites
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