Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9488316 | Method, system and device for reducing friction of viscous fluid flowing in a conduit | Jie Wu, Lachlan Graham, Bon Nguyen | 2016-11-08 |
| 8212570 | Amplifier circuit for a current transformer | — | 2012-07-03 |
| 8174399 | Methods to detect hazardous conditions in a safety ground circuit in the presence of ground loop currents and electrical noise | — | 2012-05-08 |
| 7420133 | Door interlock for rotary actuated circuit breaker | Jeffrey J. Mason | 2008-09-02 |
| 6342686 | Method for determining a condition of a resistance spotwelding system or a workpiece in the system | — | 2002-01-29 |
| 6225590 | Method for determining a condition of a resistance spotwelding system or a workpiece in the system | — | 2001-05-01 |
| 5793243 | Method of stabilizing an electronic signal integrator | — | 1998-08-11 |
| 5757176 | Method and system for controlling output current of a large, low-voltage, DC power supply and obtaining diagnostic information from the operation thereof | — | 1998-05-26 |
| 4885451 | Automatic stepper for resistance welding | David W. Schulz | 1989-12-05 |
| 4851635 | Method and apparatus for determining the power factor of a circuit | — | 1989-07-25 |
| 4831229 | High frequency resistance spot welding structure and method | — | 1989-05-16 |
| 4804819 | Structure and method for resistance welding with an inductively coupled power source | — | 1989-02-14 |
| 4733045 | Method of and structure for high speed resistance seam welding | — | 1988-03-22 |
| 4513363 | Structure for and method of reducing impedance in multiphase direct current power supplies | — | 1985-04-23 |