Daniel D. Sympson
14Patents
4h-index
4Co-inventors
49Inventor score
Filing activity: Mar 14, 2002 → May 15, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7836919B2 | Device for loading chemical reactor tubes | Performing Operations; Transporting | 14 | Active |
| US6725706B2 | Device and method for blowing down and measuring the back pressure of chemical reactor tubes | Performing Operations; Transporting | 13 | Expired |
| US7285251B2 | Tool for loading reactor tubes | Performing Operations; Transporting | 11 | Expired |
| US6981404B2 | Device and method for use with chemical reactor tubes | Performing Operations; Transporting | 9 | Expired |
| US7913543B2 | Method of using a device for measuring the back pressure in chemical reactor tubes | Performing Operations; Transporting | 4 | Active |
| US7878225B2 | Vacuum attachment and method | Performing Operations; Transporting | 4 | Active |
| US7673496B2 | Device for measuring back pressure in chemical reactor tubes | Performing Operations; Transporting | 4 | Active |
| USD539441S1 | Tile surface | General | 3 | Expired |
| US7458401B2 | Method for loading reactor tubes | Performing Operations; Transporting | 3 | Active |
| US7861875B2 | Seal for tube | Performing Operations; Transporting | 3 | Active |
| US7818995B2 | Device for measuring back pressure in open-ended chemical reactor tubes | Performing Operations; Transporting | 3 | Active |
| US9500631B2 | Device for testing vertical tubes in a chemical reactor | Performing Operations; Transporting | 0 | Active |
| US7748255B2 | Method for assessing chemical reactor tubes | Performing Operations; Transporting | 0 | Active |
| US8753452B2 | Method for treating vertical tubes in a chemical reactor | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.