Issued Patents All Time
Showing 676–700 of 708 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6231645 | Apparatus and method for separating particles from a cyclonic fluid flow utilizing a movable access member associated with a cyclonic separator | Dave Petersen | 2001-05-15 |
| 6226990 | Heat engine | — | 2001-05-08 |
| 6228260 | Apparatus for separating particles from a cyclonic fluid flow | Dave Petersen | 2001-05-08 |
| 6228151 | Apparatus and method for separating particles from a cyclonic fluid flow | Dave Petersen | 2001-05-08 |
| 6224325 | Prandtl layer turbine | Helmut Gerhard Conrad, Ted Szylowiec | 2001-05-01 |
| 6221134 | Apparatus and method for separating particles from a cyclonic fluid flow | Dave Petersen | 2001-04-24 |
| 6217635 | Method and apparatus for concentrating a gas using a single stage adsorption chamber | Helmut Gerhard Conrad, Ted Szylowiec | 2001-04-17 |
| 6190622 | Ozone generator | Helmut Gerhard Conrad, Ted Szylowiec, Richard Stanley Philips | 2001-02-20 |
| 6183641 | Prandtl layer turbine | Helmut Gerhard Conrad, Ted Szylowiec | 2001-02-06 |
| 6174127 | Prandtl layer turbine | Helmut Gerhard Conrad, Ted Szylowiec | 2001-01-16 |
| 6173474 | Construction of a vacuum cleaner head | — | 2001-01-16 |
| 6170119 | Method and apparatus for reducing the size of elongate particulate material in a vacuum cleaner head | Scott Hamilton | 2001-01-09 |
| 6168716 | Cyclone separator having a variable transverse profile | Helmut Gerhard Conrad, Ted Szylowiec | 2001-01-02 |
| 6162283 | Method and apparatus for concentrating a gas using a single stage adsorption zone | Helmut Gerhard Conrad, Ted Szylowiec | 2000-12-19 |
| 6156100 | Method and apparatus for concentrating a gas using a single stage adsorption zone | Helmut Gerhard Conrad, Ted Szylowiec | 2000-12-05 |
| 6156102 | Method and apparatus for recovering water from air | Helmut Gerhard Conrad | 2000-12-05 |
| 6153111 | Method and apparatus for purifying water | Helmut Gerhard Conrad, Ted Szylowiec | 2000-11-28 |
| 6141826 | Center air feed for cyclonic separator | Helmut Gerhard Conrad | 2000-11-07 |
| 6135708 | Prandtl layer turbine | Helmut Gerhard Conrad, Ted Szylowiec | 2000-10-24 |
| 6129775 | Terminal insert for a cyclone separator | Helmut Gerhard Conrad, Ted Szylowiec | 2000-10-10 |
| 6123779 | Pressure based sensing means for adjusting the height of an agitator in a vacuum cleaner head | Helmut Gerhard Conrad | 2000-09-26 |
| 6101672 | Rotatable handle for a vacuum cleaner | Bradley Scott Logan-Hamilton | 2000-08-15 |
| 6099661 | Method and apparatus for increasing the air flow into a vacuum cleaner head | — | 2000-08-08 |
| 6098244 | Handle for vacuum cleaner having an offset hand grip portion | Bradley Scott Logan-Hamilton | 2000-08-08 |
| 6060027 | Ozone generator | Helmut Gerhard Conrad, Ted Szylowiec, Richard Stanley Philips | 2000-05-09 |