| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 13 | |
| #2 | Canada | 4 | |
| #3 | United Kingdom | 2 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Thermal processes | |
| #3 | Mechanical elements | |
| #4 | Machine tools | |
| #5 | Textiles and paper |
| # | Name | Total Patents |
|---|---|---|
| #1 | Irwin William J | 17 |
| Publication | Filing date | Title |
|---|---|---|
| GB0513995D0 | A pipe coupling | |
| GB9812086D0 | Pipe crimping apparatus | |
| CA2001066A1 | Pipe connections | |
| US5271257A | Pipe crimping apparatus | |
| US5108134A | Pipe connections | |
| US2855192A | Heat regenerators | |
| US2479933A | Heat regenerator of the chimney type | |
| US2446420A | Chimney type heat regenerator | |
| US2300289A | Heat regenerator | |
| US2178794A | Furnace regenerator system | |
| US2178795A | Furnace regenerator arrangement | |
| US1904236A | Heat regenerator | |
| US1904237A | Regenerative chamber | |
| US1577801A | Type-bar-casting machine | |
| US1400070A | Typographical machine | |
| US1254599A | Nozzle control for turbines. | |
| CA426953A | Heat regenerator | |
| CA391032A | Furnace regenerator arrangement | |
| CA391031A | Furnace regenerator system |