Issued Patents All Time
Showing 25 most recent of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6773521 | Apparatus and process for treating a particulate material within a rotating retort | — | 2004-08-10 |
| 6427711 | Inline check valve | — | 2002-08-06 |
| 6425570 | Ball valve having retractable sealing member | — | 2002-07-30 |
| 6379610 | Apparatus and process for treating a particulate material within a rotating retort | — | 2002-04-30 |
| 5958156 | Process for treating a particulate material within a rotating retort | — | 1999-09-28 |
| 5766544 | Process for fluidizing particulate material within a rotatable retort | — | 1998-06-16 |
| 5759483 | Apparatus for treating a particulate material within a rotating retort | — | 1998-06-02 |
| 5435337 | Inline control valve for controlling fluid flow | — | 1995-07-25 |
| 5407498 | Mechanically fluidized retort and method for treating particles therein | — | 1995-04-18 |
| 5399207 | Process for surface hardening of refractory metal workpieces | — | 1995-03-21 |
| 5378331 | Apparatus and method for electropolishing metal workpieces | — | 1995-01-03 |
| 5324009 | Apparatus for surface hardening of refractory metal workpieces | — | 1994-06-28 |
| 5316594 | Process for surface hardening of refractory metal workpieces | — | 1994-05-31 |
| 5303904 | Method and apparatus for controlling heat transfer between a container and workpieces | — | 1994-04-19 |
| 5170659 | Apparatus and method for detecting fluid leakage | — | 1992-12-15 |
| 5170989 | Sealing assembly for valve member | — | 1992-12-15 |
| 5127628 | Means for rotating ball valves between open and closed positions | — | 1992-07-07 |
| 5000492 | Flanged connection for flow line members | — | 1991-03-19 |
| 4940208 | Ball valve | — | 1990-07-10 |
| 4919391 | flanged connection for valves | — | 1990-04-24 |
| 4911196 | Inline check valve | — | 1990-03-27 |
| 4911408 | Seat assembly for ball valves | — | 1990-03-27 |
| 4899980 | Ball valve | — | 1990-02-13 |
| D296921 | Gate valve | — | 1988-07-26 |
| D296922 | Gate valve | — | 1988-07-26 |