| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 16 | |
| #2 | Canada | 5 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Engines, pumps and turbines | |
| #4 | Mechanical elements | |
| #5 | Chemical engineering | |
| #6 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Earth drilling | |
| #2 | Pumps | |
| #3 | Unspecified technologies | |
| #4 | Separation | |
| #5 | Unspecified technologies | |
| #6 | Tools for connecting or disengaging | |
| #7 | Venting or aerating devices | |
| #8 | Shafts | |
| #9 | Fillers | |
| #10 | Shaping of plastics |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hall Jesse E | 21 |
| Publication | Filing date | Title |
|---|---|---|
| US2727576A | Centralizers | |
| US2687566A | Applicator tool | |
| US2671515A | Well bore cleaning scratcher | |
| US2392146A | Drill pipe wiper | |
| US2392144A | Pipe-line cleaner | |
| US2392145A | Cement basket | |
| US2258052A | Spiral guide and tubing holder | |
| US2196794A | Stem jammed wedge valve | |
| US2229076A | Roller bearing | |
| US2196793A | Fluid screen | |
| US2191380A | Well pump | |
| US2107788A | Deballing drill bit | |
| US2220237A | Well cleaner | |
| US2132161A | Insertable circulation starter for well strings | |
| US2126992A | Pump jack | |
| US2138002A | Well pump | |
| CA536666A | Pipe protector | |
| CA542333A | Well casing centralizer | |
| CA559149A | Process for conditioning wells for cementing and apparatus used in connection therewith | |
| CA518888A | Applicator tool for drill pipe protector |