Issued Patents All Time
Showing 601–625 of 708 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7455708 | Air flow passage for a vacuum cleaner | Helmut Gerhard Conrad, Ted Szylowiec | 2008-11-25 |
| D581609 | Vacuum cleaner | Nina Conrad | 2008-11-25 |
| 7449040 | Apparatus and method for separating particles from a cyclonic fluid flow | Dave Petersen | 2008-11-11 |
| D574564 | Vacuum cleaner | Nina Conrad | 2008-08-05 |
| 7374598 | Methods and apparatus for spray forming, atomization and heat transfer | Robin M. Forbes Jones, Richard L. Kennedy, Helmut Gerhard Conrad, Ted Szylowiec, Richard Stanley Phillips +1 more | 2008-05-20 |
| 7329294 | Dirt container for a surface cleaning apparatus and method of use | — | 2008-02-12 |
| 7228593 | Appliance which utilizes a magnetic clutch to transmit power from a drive means to a movable member and a magnetic clutch | — | 2007-06-12 |
| 7179314 | Vacuum cleaner | Helmut Gerhard Conrad | 2007-02-20 |
| 7171810 | Stirling engine with hydraulic output | — | 2007-02-06 |
| D535392 | Ostomy bag | Nina Kanevsky Conrad | 2007-01-16 |
| D533659 | Ostomy bag | Nina Conrad | 2006-12-12 |
| 6984364 | Process and apparatus for chemical conversion | Richard Stanley Phillips, Andrew Richard Henry Phillips, Helmut Gerhard Conrad | 2006-01-10 |
| 6902596 | Air flow passage for a vacuum cleaner | Helmut Gerhard Conrad, Ted Szylowiec | 2005-06-07 |
| 6874197 | Apparatus and method for separating particles from a cyclonic fluid flow | Dave Petersen | 2005-04-05 |
| 6782585 | Upright vacuum cleaner with cyclonic air flow | Helmut Gerhard Conrad | 2004-08-31 |
| 6772961 | Methods and apparatus for spray forming, atomization and heat transfer | Robin M. Forbes Jones, Richard L. Kennedy, Helmut Gerhard Conrad, Ted Szylowiec, Richard Stanley Phillips +1 more | 2004-08-10 |
| 6740144 | Vacuum cleaner utilizing electrostatic filtration and electrostatic precipitator for use therein | Helmut Gerhard Conrad | 2004-05-25 |
| 6736873 | Air flow passage for a vacuum cleaner | Helmut Gerhard Conrad, Ted Szylowiec | 2004-05-18 |
| 6599340 | Air flow passage for a cyclonic separator and vacuum cleaner having same | Helmut Gerhard Conrad, Ted Szylowiec | 2003-07-29 |
| 6596046 | Cyclone separator having a variable longitudinal profile | Helmut Gerhard Conrad, Ted Szylowiec | 2003-07-22 |
| 6582489 | Method and apparatus of particle transfer in multi-stage particle separators | — | 2003-06-24 |
| 6568900 | Pressure swing contactor for the treatment of a liquid with a gas | Helmut Gerhard Conrad, Richard Stanley Philips | 2003-05-27 |
| 6533834 | Apparatus and method for separating particles from a cyclonic fluid flow | Dave Petersen | 2003-03-18 |
| 6527950 | Construction of a water treatment appliance | Terry Bohrson, John Stouth, Mike Badgley, Joe Don Garrison, Shawn C. Nielsen +2 more | 2003-03-04 |
| 6526622 | Vacuum cleaner actuated by reconfiguration of the vacuum cleaner | — | 2003-03-04 |