Assignee
KEYSTONE RETAINING WALL SYSTEM
US·66 granted patents·18 pending applications·3,364 citations·filing 1987–2015
Top patents by PatentIndex Score
84 records- 0199US7654776B2Retaining wall blockKEYSTONE RETAINING WALL SYSTEM·Filed 2008·Granted Feb 2, 2010·44 cites·24 claims
- 0299US7448830B2Retaining wall blockKEYSTONE RETAINING WALL SYSTEM·Filed 2007·Granted Nov 11, 2008·48 cites·14 claims
- 0399US6912823B2Multi-channel retaining wall block and systemKEYSTONE RETAINING WALL SYSTEM·Filed 2002·Granted Jul 5, 2005·97 cites·15 claims
- 0499USD501935SWall blockKEYSTONE RETAINING WALL SYSTEM·Filed 2003·Granted Feb 15, 2005·97 cites·1 claims
- 0599US6821058B1Retaining wall block system and connectorKEYSTONE RETAINING WALL SYSTEM·Filed 2003·Granted Nov 23, 2004·117 cites·7 claims
- 0699US6615561B2Retaining wall blockKEYSTONE RETAINING WALL SYSTEM·Filed 2001·Granted Sep 9, 2003·132 cites·21 claims
- 0799US6149352ARetaining wall block systemKEYSTONE RETAINING WALL SYSTEM·Filed 1999·Granted Nov 21, 2000·178 cites·7 claims
- 0899US4914876ARetaining wall with flexible mechanical soil stabilizing sheetKEYSTONE RETAINING WALL SYSTEM·Filed 1988·Granted Apr 10, 1990·228 cites·23 claims
- 0999US4802320ARetaining wall blockKEYSTONE RETAINING WALL SYSTEM·Filed 1987·Granted Feb 7, 1989·141 cites·43 claims
- 1098US6854231B2Multi-channel retaining wall block and systemKEYSTONE RETAINING WALL SYSTEM·Filed 2001·Granted Feb 15, 2005·95 cites·35 claims
- 1198US6536994B2Grooved retaining wall block and systemKEYSTONE RETAINING WALL SYSTEM·Filed 2001·Granted Mar 25, 2003·125 cites·12 claims
- 1298US5568994ALandscaping blockKEYSTONE RETAINING WALL SYSTEM·Filed 1994·Granted Oct 29, 1996·103 cites·14 claims
- 1397US7993718B2Irregular tessellated building unitsKEYSTONE RETAINING WALL SYSTEM·Filed 2010·Granted Aug 9, 2011·36 cites·9 claims
- 1497US7971407B2Wall block and wall block system for constructing wallsKEYSTONE RETAINING WALL SYSTEM·Filed 2008·Granted Jul 5, 2011·49 cites·7 claims
- 1597US7168892B1Retaining wall blockKEYSTONE RETAINING WALL SYSTEM·Filed 1999·Granted Jan 30, 2007·92 cites·14 claims
- 1697US6709201B2Grooved retaining wall block and systemKEYSTONE RETAINING WALL SYSTEM·Filed 2003·Granted Mar 23, 2004·65 cites·6 claims
- 1797US5601384APlantable retaining wallKEYSTONE RETAINING WALL SYSTEM·Filed 1995·Granted Feb 11, 1997·125 cites·17 claims
- 1897US4825619ABlock wallKEYSTONE RETAINING WALL SYSTEM·Filed 1987·Granted May 2, 1989·132 cites·52 claims
- 1996USD610710SWall blockKEYSTONE RETAINING WALL SYSTEM·Filed 2008·Granted Feb 23, 2010·58 cites·1 claims
- 2096US7641178B2Column block systemKEYSTONE RETAINING WALL SYSTEM·Filed 2005·Granted Jan 5, 2010·42 cites·4 claims
- 2196USD490542SLandscaping blockKEYSTONE RETAINING WALL SYSTEM·Filed 2003·Granted May 25, 2004·66 cites·1 claims
- 2296USD488569SLandscaping blockKEYSTONE RETAINING WALL SYSTEM·Filed 2003·Granted Apr 13, 2004·67 cites·1 claims
- 2396USD488568SLandscaping blockKEYSTONE RETAINING WALL SYSTEM·Filed 2003·Granted Apr 13, 2004·68 cites·1 claims
- 2496USD488242SLandscaping blockKEYSTONE RETAINING WALL SYSTEM·Filed 2003·Granted Apr 6, 2004·64 cites·1 claims
- 2596US5913790APlantable retaining wall blockKEYSTONE RETAINING WALL SYSTEM·Filed 1997·Granted Jun 22, 1999·131 cites·15 claims
- 2696US5865006ARetaining wall block and wall constructionKEYSTONE RETAINING WALL SYSTEM·Filed 1997·Granted Feb 2, 1999·97 cites·25 claims
- 2795US9021761B2Building unit with mating sidesKEYSTONE RETAINING WALL SYSTEM·Filed 2014·Granted May 5, 2015·24 cites·19 claims
- 2895US8609215B2Irregular tessellated building unitsKEYSTONE RETAINING WALL SYSTEM·Filed 2012·Granted Dec 17, 2013·16 cites·5 claims
- 2995US5779391ARevetment blockKEYSTONE RETAINING WALL SYSTEM·Filed 1996·Granted Jul 14, 1998·75 cites·36 claims
- 3093US8887469B2Slant wall block and wall section including sameKEYSTONE RETAINING WALL SYSTEM·Filed 2012·Granted Nov 18, 2014·16 cites·11 claims
- 3193USD621070SWall block bodyKEYSTONE RETAINING WALL SYSTEM·Filed 2009·Granted Aug 3, 2010·50 cites·1 claims
- 3292US7780141B2Mold box for making first and second wall blocksKEYSTONE RETAINING WALL SYSTEM·Filed 2004·Granted Aug 24, 2010·34 cites·8 claims
- 3392US6637981B2Retaining wall block system and method with varying block face sizesKEYSTONE RETAINING WALL SYSTEM·Filed 2002·Granted Oct 28, 2003·30 cites·27 claims
- 3490USD620615SWall blockKEYSTONE RETAINING WALL SYSTEM·Filed 2009·Granted Jul 27, 2010·34 cites·1 claims
- 3590USD479342SLandscaping blockKEYSTONE RETAINING WALL SYSTEM·Filed 2002·Granted Sep 2, 2003·36 cites·1 claims
- 3690US5771631ALandscaping blockKEYSTONE RETAINING WALL SYSTEM·Filed 1996·Granted Jun 30, 1998·50 cites·10 claims
- 3790US5551809AEmbankment wall construction and method and block construction for making the sameKEYSTONE RETAINING WALL SYSTEM·Filed 1994·Granted Sep 3, 1996·62 cites·30 claims
- 3889US8820022B1Building unit with cobble topKEYSTONE RETAINING WALL SYSTEM·Filed 2013·Granted Sep 2, 2014·15 cites·17 claims
- 3989US6447213B1Retaining wall block system and method with varying block face sizesKEYSTONE RETAINING WALL SYSTEM·Filed 2000·Granted Sep 10, 2002·37 cites·41 claims
- 4088US7871223B2Retaining wall blockKEYSTONE RETAINING WALL SYSTEM·Filed 2009·Granted Jan 18, 2011·10 cites·6 claims
- 4188US5588262ALandscaping block systemKEYSTONE RETAINING WALL SYSTEM·Filed 1994·Granted Dec 31, 1996·46 cites·12 claims
- 4287US7011474B2Retaining wall block systemKEYSTONE RETAINING WALL SYSTEM·Filed 2004·Granted Mar 14, 2006·31 cites·27 claims
- 4385USD647219SLandscaping blockKEYSTONE RETAINING WALL SYSTEM·Filed 2011·Granted Oct 18, 2011·25 cites·1 claims
- 4484US6803002B2Method for making and treating wall blocksKEYSTONE RETAINING WALL SYSTEM·Filed 2002·Granted Oct 12, 2004·37 cites·55 claims
- 4582USRE37278ERetaining wall blockKEYSTONE RETAINING WALL SYSTEM·Filed 1993·Granted Jul 17, 2001·41 cites·44 claims
- 4681USD674510SLandscape edgerKEYSTONE RETAINING WALL SYSTEM·Filed 2011·Granted Jan 15, 2013·19 cites·1 claims
- 4780US9267260B2Slant wall block and wall section including sameKEYSTONE RETAINING WALL SYSTEM·Filed 2014·Granted Feb 23, 2016·9 cites·22 claims
- 4880US6893192B2Retaining wall block systemKEYSTONE RETAINING WALL SYSTEM·Filed 2003·Granted May 17, 2005·20 cites·17 claims
- 4978USD647218SLandscaping blockKEYSTONE RETAINING WALL SYSTEM·Filed 2011·Granted Oct 18, 2011·23 cites·1 claims
- 5077USD674118SLandscaping blockKEYSTONE RETAINING WALL SYSTEM·Filed 2012·Granted Jan 8, 2013·19 cites·1 claims
Showing the top 50 of 84 patent records by PatentIndex Score.
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