Inventor · disambiguated record
Stephen C. Stelpstra
Also filed as: STELPSTRA STEPHEN C
11 granted patents·767 citations·filing 1998–2004
94Inventor score
Files withABTECH INDUSTRIES INC11
Top patents by PatentIndex Score
11 records- 0198US6531059B1Suspended runoff water filterABTECH INDUSTRIES INC·Filed 2000·Granted Mar 11, 2003·145 cites·44 claims
- 0298US6231758B1Curb-inlet storm drain systems for filtering trash and hydrocarbonsABTECH INDUSTRIES INC·Filed 2000·Granted May 15, 2001·109 cites·14 claims
- 0393US6099723ACatchbasin systems for filtering hydrocarbon spillsABTECH INDUSTRIES INC·Filed 1998·Granted Aug 8, 2000·99 cites·20 claims
- 0492US6106707ACurb-inlet storm drain systems for filtering trash and hydrocarbonsABTECH INDUSTRIES INC·Filed 1999·Granted Aug 22, 2000·145 cites·20 claims
- 0590US6080307AStorm drain systems for filtering trash and hydrocarbonsABTECH INDUSTRIES INC·Filed 1998·Granted Jun 27, 2000·134 cites·20 claims
- 0687US7094338B2Method of making and using a filter in the form of a block of agglomerated copolymer fragmentsABTECH INDUSTRIES INC·Filed 2003·Granted Aug 22, 2006·36 cites·28 claims
- 0783US6344519B1Systems for ameliorating aqueous hydrocarbon spillsABTECH INDUSTRIES INC·Filed 1998·Granted Feb 5, 2002·32 cites·17 claims
- 0876US6723791B2Systems for ameliorating aqueous hydrocarbon spillsABTECH INDUSTRIES INC·Filed 2001·Granted Apr 20, 2004·11 cites·20 claims
- 0972US7229560B2Sack-based processes for recovering oil floating on waterABTECH INDUSTRIES INC·Filed 2004·Granted Jun 12, 2007·21 cites·73 claims
- 1060US7048878B2Process of forming oil-absorbent bodiesABTECH INDUSTRIES INC·Filed 2003·Granted May 23, 2006·11 cites·20 claims
- 1160US6541569B1Polymer alloys, morphology and materials for environmental remediationABTECH INDUSTRIES INC·Filed 1998·Granted Apr 1, 2003·24 cites·23 claims
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