Inventor · disambiguated record
Clifford L. Johns
Also filed as: JOHNS CLIFFORD L
42 granted patents·3 pending applications·176 citations·filing 2002–2022
97Inventor score
Top patents by PatentIndex Score
45 records- 0192US7836919B2Device for loading chemical reactor tubesTUBEMASTER INC·Filed 2006·Granted Nov 23, 2010·21 cites·9 claims
- 0288US8166811B2Device and process for precision loading of particles in a vertical tube chemical reactorJOHNS CLIFFORD L·Filed 2008·Granted May 1, 2012·9 cites·11 claims
- 0388US7913543B2Method of using a device for measuring the back pressure in chemical reactor tubesTUBEMASTER INC·Filed 2005·Granted Mar 29, 2011·7 cites·5 claims
- 0486US9205391B2Device for injecting gas into the tubes of a chemical reactorJOHNS CLIFFORD L·Filed 2012·Granted Dec 8, 2015·6 cites·4 claims
- 0586US6981404B2Device and method for use with chemical reactor tubesTUBEMASTER INC·Filed 2004·Granted Jan 3, 2006·18 cites·20 claims
- 0685US11590471B2Device and method for loading pellets into reactor tubesTUBEMASTER INC·Filed 2020·Granted Feb 28, 2023·1 cites·10 claims
- 0784US7673496B2Device for measuring back pressure in chemical reactor tubesTUBEMASTER INC·Filed 2008·Granted Mar 9, 2010·4 cites·5 claims
- 0883US6725706B2Device and method for blowing down and measuring the back pressure of chemical reactor tubesTUBEMASTER INC·Filed 2002·Granted Apr 27, 2004·25 cites·20 claims
- 0982US8063778B2Device and method for indicating the condition of tubes on a tubesheetJOHNS CLIFFORD L·Filed 2008·Granted Nov 22, 2011·7 cites·2 claims
- 1082US7458401B2Method for loading reactor tubesTUBEMASTER INC·Filed 2007·Granted Dec 2, 2008·5 cites·1 claims
- 1180US8336586B2Loading sleeve and method for loading chemical reactor tubesJOHNS CLIFFORD L·Filed 2009·Granted Dec 25, 2012·5 cites·11 claims
- 1279US7878225B2Vacuum attachment and methodTUBEMASTER INC·Filed 2007·Granted Feb 1, 2011·5 cites·12 claims
- 1378US7765948B2Device and method for identifying the row number on a tubesheetTUBEMASTER INC·Filed 2008·Granted Aug 3, 2010·7 cites·18 claims
- 1477US7861875B2Seal for tubeTUBEMASTER INC·Filed 2008·Granted Jan 4, 2011·6 cites·8 claims
- 1577US7285251B2Tool for loading reactor tubesTUBEMASTER INC·Filed 2003·Granted Oct 23, 2007·14 cites·12 claims
- 1674US9034110B2Method of cleaning tubesJOHNS CLIFFORD L·Filed 2008·Granted May 19, 2015·7 cites·16 claims
- 1774US8752291B2Method for marking tubes in a shell and tube heat exchangerJOHNS CLIFFORD L·Filed 2011·Granted Jun 17, 2014·2 cites·16 claims
- 1872US12350677B2Device for loading pellets into reactor tubesTUBEMASTER INC·Filed 2022·Granted Jul 8, 2025·0 cites·8 claims
- 1971US8752912B1Carrying case conversion to deskJOHNS CLIFFORD L·Filed 2012·Granted Jun 17, 2014·7 cites·8 claims
- 2068US11103842B2Device and method for loading pelletsTUBEMASTER INC·Filed 2020·Granted Aug 31, 2021·0 cites·6 claims
- 2168US9138710B2Device for unloading catalyst from a reactor vesselJOHNS CLIFFORD L·Filed 2012·Granted Sep 22, 2015·1 cites·6 claims
- 2268US8061524B2Device and method for transporting catalyst to a reactor vesselCAMORIANO GUILLERMO·Filed 2008·Granted Nov 22, 2011·3 cites·17 claims
- 2367US11833501B2Universal tube marker for identifying chemical reactor tubes accurately and efficientlyTUBEMASTER INC·Filed 2022·Granted Dec 5, 2023·0 cites·10 claims
- 2466US7818995B2Device for measuring back pressure in open-ended chemical reactor tubesTUBEMASTER INC·Filed 2008·Granted Oct 26, 2010·3 cites·18 claims
- 2566US6592365B1Seal for oven circulating fanFiled 2002·Granted Jul 15, 2003·5 cites·8 claims
- 2665US9293067B1Device for marking a wireEXTUNDO INC·Filed 2013·Granted Mar 22, 2016·1 cites·9 claims
- 2765US9149778B2Device and method for dispensing catalyst pelletsEXTUNDO INC·Filed 2013·Granted Oct 6, 2015·1 cites·19 claims
- 2864US7748255B2Method for assessing chemical reactor tubesTUBEMASTER INC·Filed 2008·Granted Jul 6, 2010·0 cites·8 claims
- 2963US10710039B2Device and method for loading pelletsTUBEMASTER INC·Filed 2017·Granted Jul 14, 2020·0 cites·5 claims
- 3062US9500631B2Device for testing vertical tubes in a chemical reactorExtundo Incorporated·Filed 2014·Granted Nov 22, 2016·0 cites·2 claims
- 3162US8646492B2Device for loading catalyst into a reactor vesselJOHNS CLIFFORD L·Filed 2011·Granted Feb 11, 2014·1 cites·16 claims
- 3260US2012123731A1Method for treating vertical tubes in a chemical reactorJOHNS CLIFFORD L·Filed 2012·Application pending·0 cites
- 3357US11660579B2Air lance for removing pellets from tubesTUBEMASTER INC·Filed 2021·Granted May 30, 2023·0 cites·20 claims
- 3455US11406955B2Air lance for removing pellets from a tubeTUBEMASTER INC·Filed 2020·Granted Aug 9, 2022·0 cites·17 claims
- 3553US12228356B2Device for cleaning inner surface of heat exchanger tubesTUBEMASTER INC·Filed 2021·Granted Feb 18, 2025·0 cites·12 claims
- 3653US2012174662A1Measurement device for measuring the elevation of particles in a vertical tubeJOHNS CLIFFORD L·Filed 2012·Application pending·0 cites
- 3752US10493417B2Method for loading pelletsTUBEMASTER INC·Filed 2018·Granted Dec 3, 2019·0 cites·14 claims
- 3849US12467315B2Smart ladderUSS Veteran Services Company LLC·Filed 2021·Granted Nov 11, 2025·0 cites·20 claims
- 3947US8753452B2Method for treating vertical tubes in a chemical reactorJOHNS CLIFFORD L·Filed 2008·Granted Jun 17, 2014·0 cites·4 claims
- 4046US10267968B2Lighting and communication system for confined spaceTUBEMASTER INC·Filed 2017·Granted Apr 23, 2019·0 cites·10 claims
- 4144US9138709B2Device and method for dispensing pelletsJOHNS CLIFFORD L·Filed 2012·Granted Sep 22, 2015·0 cites·6 claims
- 4243US8511249B1Pointer arrangement for marking tubes in a shell and tube heat exchangerJOHNS CLIFFORD L·Filed 2010·Granted Aug 20, 2013·0 cites·6 claims
- 4342USD539441STile surfaceTUBEMASTER INC·Filed 2005·Granted Mar 27, 2007·5 cites·1 claims
- 4440US2017296994A1Arrangement for Loading ParticlesTUBEMASTER INC·Filed 2017·Application pending·0 cites
- 4539US8562270B1Loading arrangement including a dam for confining catalyst and other particles on the top tubesheet of a chemical reactorJOHNS CLIFFORD L·Filed 2010·Granted Oct 22, 2013·0 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →