Issued Patents All Time
Showing 76–100 of 104 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5522708 | Fluid sampling pump with adjustable valve means and easily accessable filter | — | 1996-06-04 |
| 5503180 | Valve having easily replaceable seat | — | 1996-04-02 |
| 5498138 | Sampling pump having a fluid motor pressure regulator | Robert L. Ward | 1996-03-12 |
| 5320133 | Flow system disconnect and method | — | 1994-06-14 |
| 5316351 | Hose swivel | Arnold Czimny, Robert L. Ward | 1994-05-31 |
| 5313975 | Gas lockout system | — | 1994-05-24 |
| 5257653 | Ejector pull away system and apparatus | — | 1993-11-02 |
| 5228474 | Flow system disconnect and method | — | 1993-07-20 |
| 5215120 | Apparatus and method for reducing valve emissions | Robert L. Ward | 1993-06-01 |
| 5191801 | Fluid sampling pump | Paul V. Allen, Robert L. Ward | 1993-03-09 |
| 5173579 | Differential pressure switch including a vertical diaphragm, a reed switch activated by a first magnet and additional magnets for positioning the diaphragm and the first magnet | — | 1992-12-22 |
| 5109709 | Direct mount system for a fluid sampling pump and method | — | 1992-05-05 |
| 5109712 | Portable sample cylinder with reduced seal permeability | Robert L. Ward | 1992-05-05 |
| 5092742 | Fluid sampling pump | Paul V. Allen, Robert L. Ward | 1992-03-03 |
| 5090438 | Self-relieving fluid regulator | — | 1992-02-25 |
| 5074154 | Fluid sampling pump | Paul V. Allen, Robert L. Ward | 1991-12-24 |
| 4974308 | Method for interconnecting an instrument manifold with an orifice plate assembly | — | 1990-12-04 |
| 4930361 | Portable piston style sample cylinder | — | 1990-06-05 |
| 4920626 | Stabilized connector flange for interconnecting an instrument manifold with an orifice plate assembly | — | 1990-05-01 |
| 4862754 | Portable piston style sample cylinder | — | 1989-09-05 |
| 4745938 | Outside seal and yoke valve | Alan F. Chou | 1988-05-24 |
| 4672728 | Pressure signal instrumentation having removable flanges and mounting method therefor | — | 1987-06-16 |
| 4655251 | Valve having hard and soft seats | — | 1987-04-07 |
| 4630629 | Valve with compressible valve stem and valve body seals | — | 1986-12-23 |
| 4597581 | Pressure seal for valve stems and the like | — | 1986-07-01 |