Issued Patents All Time
Showing 25 most recent of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12352458 | Simple airflow measurement method | — | 2025-07-08 |
| 12345428 | Occupancy fan controller | John Walsh | 2025-07-01 |
| 12241648 | Non-invasive temperature-based diagnostic method | — | 2025-03-04 |
| 12066200 | Occupancy fan controller | John Walsh | 2024-08-20 |
| 12038204 | Ionizer feedback control | John Walsh, James Lau | 2024-07-16 |
| 11879651 | Occupancy-based fan control | John Walsh | 2024-01-23 |
| RE49383 | External thermostat fan controller | John Walsh | 2023-01-24 |
| 11563310 | Bipolar ionizer with feedback control | John Walsh | 2023-01-24 |
| 11460208 | Smart thermostat fan controller | John Walsh | 2022-10-04 |
| 11187425 | Thermostat variable fan-off delay | John Walsh | 2021-11-30 |
| 11173226 | Balanced bipolar ionizer based on unbalanced high-voltage output | John Walsh | 2021-11-16 |
| 11175060 | Fan-on detection and correction | John Walsh | 2021-11-16 |
| 11029061 | Economizer perimeter gap sealing | John Walsh | 2021-06-08 |
| 11029057 | Economizer controller calibration | — | 2021-06-08 |
| 11022335 | Economizer cooling delay correction | John Walsh | 2021-06-01 |
| 10921014 | Smart thermostat power control apparatus | John Walsh | 2021-02-16 |
| 10859284 | Solid-state common-wire adapter for smart communicating thermostats | John Walsh | 2020-12-08 |
| 10712036 | Fault detection diagnostic variable differential variable delay thermostat | John Walsh | 2020-07-14 |
| 10663186 | Apparatus and methods to determine economizer faults | John Walsh | 2020-05-26 |
| 10533768 | Smart fan controller | John Walsh | 2020-01-14 |
| 10281938 | Method for a variable differential variable delay thermostat | John Walsh | 2019-05-07 |
| 10001289 | Apparatus and methods to measure economizer outdoor air fractions and fault detection diagnostics of airflow, cooling capacity, and heating capacity | — | 2018-06-19 |
| 9995493 | Efficient fan controller | John Walsh | 2018-06-12 |
| 9797405 | Method for efficient fan control for electric or gas furnaces and heat pumps in heating mode | John Walsh | 2017-10-24 |
| 9671125 | Fan controller | John Walsh | 2017-06-06 |