Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6490174 | Electronic interface for power stealing circuit | — | 2002-12-03 |
| 5903139 | Power stealing solid state switch for supplying operating power to an electronic control device | — | 1999-05-11 |
| 5768116 | Bi-directional DC/DC voltage converter | — | 1998-06-16 |
| 5073769 | Flame detector using a discrete fourier transform to process amplitude samples from a flame signal | — | 1991-12-17 |
| 4947079 | Notch cutting circuit with minimal power dissipation | Robert A. Black | 1990-08-07 |
| 4937504 | Time delay initialization circuit | Robert A. Black | 1990-06-26 |
| 4904906 | Fluorescent light dimming | Larry S. Atherton, Robert A. Black | 1990-02-27 |
| 4899088 | Power control circuit for inductive loads | Robert A. Black | 1990-02-06 |
| 4635845 | Time controlled thermostat | — | 1987-01-13 |
| 4565092 | Flow sensor with adjustable sensitivity | — | 1986-01-21 |
| 4562522 | Power supply for an electrostatic air cleaner with a modulated pulse width voltage input having a backup pulse width limiting means | John T. Adams | 1985-12-31 |
| 4558595 | Capacitance monitoring bridge circuit for an enthalpy responsive device | — | 1985-12-17 |
| 4465229 | Humidity comfort offset circuit | — | 1984-08-14 |
| 4431962 | Capacitor monitoring by single resistor adjustment | — | 1984-02-14 |
| 4423364 | Electric motor damper drive with backup power pack | Curtis E. Westley | 1983-12-27 |
| 4409552 | Cyclic means with magnetic latch for checking switch integrity | — | 1983-10-11 |
| 4405080 | Electronic temperature control from a mechanical temperature responsive means | — | 1983-09-20 |
| 4366534 | Electronic condition control system using digital anticipation | — | 1982-12-28 |
| 4340173 | Low voltage power supply | — | 1982-07-20 |
| 4328528 | Two-wire condition control circuit means | — | 1982-05-04 |
| 4316577 | Energy saving thermostat | John T. Adams, Marvin D. Nelson, B. Hubert Pinckaers | 1982-02-23 |
| 4283638 | Field effect transistor switched temperature control circuit | — | 1981-08-11 |
| 4280069 | Field effect transistor device means control system | — | 1981-07-21 |
| 4225791 | Optical smoke detector circuit | — | 1980-09-30 |
| 4193006 | Multi-stage controller | John L. Kabat | 1980-03-11 |