| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 10 | |
| #2 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Environmental technology | |
| #3 | Control |
| # | Name | Total Patents |
|---|---|---|
| #1 | Rieger Heinz H | 3 |
| #2 | Barkhouse Sydney R | 3 |
| #3 | Champion Mark R | 3 |
| #4 | Beal Thomas J | 2 |
| #5 | Cabrera Robert E | 2 |
| #6 | Campbell Larry E | 2 |
| #7 | Barnes Mark R | 1 |
| #8 | Marusak Michael E | 1 |
| #9 | Campbell Lawrence E | 1 |
| #10 | Broome Frank H | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US6216687B1 | Unvented heating appliance having system for reducing undesirable combustion products | |
| US5673683A | Induced draft fireplace | |
| US5701882A | Fireplace with ceramic fiber duct | |
| US5626127A | Clean face air circulating fireplace | |
| US5695116A | Thermally activated vent damper | |
| US5617842A | Fireplace with outer housing cooling system | |
| US5603312A | Direct vent wood burning fireplace | |
| US5584680A | Unvented gas log set |