Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5462685 | Ferrofluid-cooled electromagnetic device and improved cooling method | Kuldip Raj | 1995-10-31 |
| 5461677 | Loudspeaker | Kuldip Raj, James Bonvouloir | 1995-10-24 |
| 5429000 | Ferrofluid pressure sensor | Kuldip Raj | 1995-07-04 |
| 5018751 | Stacked pole-piece ferrofluid seal apparatus | Kuldip Raj, Joseph Moses, James Bonvouloir, Frank Bloom | 1991-05-28 |
| 4927164 | Ferrofluid seal with epoxy pole pieces | Kuldip Raj, Joseph Moses, Frank Bloom | 1990-05-22 |
| 4898480 | Compact ferrofluidic electrically conducting sealed bearing | Kuldip Raj, Hanumaiah L. Gowda | 1990-02-06 |
| 4890850 | Tapered ferrofluid seal | Kuldip Raj, Frank Bloom | 1990-01-02 |
| 4865334 | Long-life multi-stage ferrofluid seals incorporating a ferrofluid reservoir | Kuldip Raj, James Bonvouloir, Frank Bloom | 1989-09-12 |
| 4830384 | Compact long-life magnetic fluid seal | Kuldip Raj | 1989-05-16 |
| 4824122 | Compact magnetic fluid low pressure seal | Kuldip Raj | 1989-04-25 |
| 4797013 | Compact ferrofluidic electrically conducting sealed bearing | Kuldip Raj, Hanumaiah L. Gowda | 1989-01-10 |
| 4772032 | Compact magnetic fluid low pressure seal | Kuldip Raj | 1988-09-20 |
| 4445696 | Nonbursting magnetic liquid seals for high vacuum applications | Kuldip Raj, Raymond Rodier | 1984-05-01 |
| 4407518 | Nonbursting multiple-stage ferrofluid seal and system | Kuldip Raj, James L. Kern | 1983-10-04 |
| 4252328 | Self-activating ferrofluid seal and method | Kuldip Raj, Raoul Casciari, Alvan F. Chorney | 1981-02-24 |
| 4252353 | Self-activating ferrofluid seals | Kuldip Raj, Raoul Casciari, Alvan F. Chorney | 1981-02-24 |
| 4200296 | Ferrofluid centrifugal seal | Philip Stahl, Walter R. Reed | 1980-04-29 |