| 9500631 |
Device for testing vertical tubes in a chemical reactor |
Clifford L. Johns |
2016-11-22 |
| 8753452 |
Method for treating vertical tubes in a chemical reactor |
Clifford L. Johns |
2014-06-17 |
| 7913543 |
Method of using a device for measuring the back pressure in chemical reactor tubes |
Clifford L. Johns |
2011-03-29 |
| 7878225 |
Vacuum attachment and method |
Clifford L. Johns, August M. Dattilo, III, Munaf Chasmawala, Manfred Schmidt |
2011-02-01 |
| 7861875 |
Seal for tube |
Clifford L. Johns, August M. Dattilo, III, Munaf Chasmawala, Manfred Schmidt |
2011-01-04 |
| 7836919 |
Device for loading chemical reactor tubes |
Clifford L. Johns, August M. Dattilo, III, Munaf Chasmawala, Manfred Schmidt |
2010-11-23 |
| 7818995 |
Device for measuring back pressure in open-ended chemical reactor tubes |
Clifford L. Johns |
2010-10-26 |
| 7748255 |
Method for assessing chemical reactor tubes |
Clifford L. Johns |
2010-07-06 |
| 7673496 |
Device for measuring back pressure in chemical reactor tubes |
Clifford L. Johns |
2010-03-09 |
| 7458401 |
Method for loading reactor tubes |
Clifford L. Johns |
2008-12-02 |
| 7285251 |
Tool for loading reactor tubes |
Clifford L. Johns |
2007-10-23 |
| D539441 |
Tile surface |
Clifford L. Johns, August M. Dattilo, III |
2007-03-27 |
| 6981404 |
Device and method for use with chemical reactor tubes |
Clifford L. Johns |
2006-01-03 |
| 6725706 |
Device and method for blowing down and measuring the back pressure of chemical reactor tubes |
Clifford L. Johns |
2004-04-27 |