| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 22 | |
| #2 | Canada | 7 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Machines | |
| #3 | Semiconductors | |
| #4 | Mechanical elements | |
| #5 | Electrical machinery and energy | |
| #6 | Engines, pumps and turbines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ray William R | 29 |
| Publication | Filing date | Title |
|---|---|---|
| US2597033A | Rotary oil burner | |
| US2568763A | Oil burner with rotary combustion chamber | |
| US2276591A | Operator | |
| US2345151A | Electromagnetic device | |
| US2340899A | Thermocouple structure | |
| US2374701A | Thermoelectric device | |
| US2236609A | Pilot generator | |
| US2080633A | Internal combustion engine | |
| US1701191A | Automatic oil feeding and starting valve | |
| US1587921A | Electromagnetic valve | |
| US1681647A | Oil burner | |
| US1406414A | Automatic air and oil regulator for rotary burners | |
| US1425338A | High-pressure automatic burner governor | |
| US1441630A | Oil burner | |
| US1406413A | Oil burner | |
| US1327571A | Oil-burner | |
| US1326466A | Oil-burner. | |
| CA177926A | Oil burner | |
| US1373149A | Oil-burner | |
| US1253422A | Oil-burner. |