Inventor · disambiguated record
Llewellyn L. Johnston
Also filed as: JOHNSTON LLEWELLYN L · JOHNSTON LLEWELLYN LEE
14 granted patents·3 pending applications·199 citations·filing 1994–2016
93Inventor score
Top patents by PatentIndex Score
17 records- 0189US10245756B2Mold assembly for concrete products forming machineCOLUMBIA MACHINE·Filed 2016·Granted Apr 2, 2019·4 cites·14 claims
- 0287US7635261B2Large pallet machine for forming molded productsCOLUMBIA MACHINE·Filed 2006·Granted Dec 22, 2009·12 cites·32 claims
- 0383US5542837AMold box assembly with partition platesCOLUMBIA MACHINE·Filed 1995·Granted Aug 6, 1996·37 cites·19 claims
- 0481US7100886B2Apparatus and methods for making a masonry block with a roughened surfaceWESTBLOCK SYSTEMS INC·Filed 2002·Granted Sep 5, 2006·12 cites·40 claims
- 0576US5743510ASelf-aligning mold box assemblyCOLUMBIA MACHINE·Filed 1994·Granted Apr 28, 1998·25 cites·18 claims
- 0675US5939104AApparatus for forming a multilevel concrete productCOLUMBIA MACHINE·Filed 1998·Granted Aug 17, 1999·26 cites·11 claims
- 0774US7591447B2Wall block, system and mold for making the sameWESTBLOCK SYSTEMS INC·Filed 2004·Granted Sep 22, 2009·24 cites·8 claims
- 0870US6007321AUnitary paver moldFiled 1998·Granted Dec 28, 1999·28 cites·10 claims
- 0965US5866026AMethod and apparatus for accommodating tolerances in a mold for concrete productsCOLUMBIA MACHINE·Filed 1996·Granted Feb 2, 1999·17 cites·12 claims
- 1063US2010086634A1Large pallet machine for forming molded productsCOLUMBIA MACHINE·Filed 2009·Application pending·0 cites
- 1162US10066300B2Enhanced release compression shoe for use with concrete product forming machinesCOLUMBIA MACHINE·Filed 2016·Granted Sep 4, 2018·0 cites·17 claims
- 1251US2010227016A1Large pallet machine for forming molded productsCOLUMBIA MACHINE·Filed 2010·Application pending·0 cites
- 1351US2007262229A1Concrete mold box assembly with polyurethane bonded compartmentsCOLUMBIA MACHINE·Filed 2007·Application pending·0 cites
- 1448USD610268SInsert for mold for forming concrete blocksWESTBLOCK SYSTEMS INC·Filed 2009·Granted Feb 16, 2010·5 cites·1 claims
- 1540US5648009AApparatus for adjustably mounting a mold boxCOLUMBIA MACHINE·Filed 1995·Granted Jul 15, 1997·6 cites·17 claims
- 1639USD595867SInsert for mold for forming concrete blocksWESTBLOCK SYSTEMS INC·Filed 2007·Granted Jul 7, 2009·3 cites·1 claims
- 1730USD622416SPortion of a mold insert for forming concrete blocksWESTBLOCK SYSTEMS INC·Filed 2009·Granted Aug 24, 2010·0 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →