Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11263599 | Plastic waste system and method | Carl W. Hustad, Thomas Mikus | 2022-03-01 |
| 11193691 | Controller for heating system diagnostics and operation | Mark J. Macaulay | 2021-12-07 |
| 10909547 | System and method for plastic waste disposal | — | 2021-02-02 |
| 7284709 | System and method for hydronic space heating with electrical power generation | — | 2007-10-23 |
| 7040544 | System and method for warm air space heating with electrical power generation | — | 2006-05-09 |
| 6234400 | Small scale cogeneration system for producing heat and electrical power | — | 2001-05-22 |
| 6053418 | Small-scale cogeneration system for producing heat and electrical power | — | 2000-04-25 |
| 5918805 | Self-powered space heating system | — | 1999-07-06 |
| 4989781 | High-efficiency heating unit | Martin K. Gollin | 1991-02-05 |