| |
PAT. NO. |
|
Title |
| |
|
|
|
| 2 |
6,079,371 |
 |
Viscous fluid heater |
| 3 |
5,943,991 |
|
Heater utilizing fluid frictional heat |
| |
|
|
|
| 5 |
5,836,270 |
|
Rotating apparatus and heating apparatus for vehicle |
| 6 |
5,752,474 |
|
Viscous heater |
| 7 |
5,704,320 |
|
Viscous fluid type heat generator with an elongated rotor element |
| |
|
|
|
| 9 |
5,341,768 |
|
Apparatus for frictionally heating liquid |
| 10 |
4,798,176 |
|
Apparatus for frictionally heating liquid |
| 11 |
4,779,575 |
|
Liquid friction heating apparatus |
| 12 |
4,685,443 |
|
Hydraulic friction heat generator |
| 13 |
4,651,681 |
|
Heating system using a liquid heater as the source of heat |
| 14 |
4,481,934 |
|
Friction furnace |
| 15 |
4,424,797 |
|
Heating device |