Systems and methods for combined outdoor air fraction and VAV unit control
US-12523976-B2 · Jan 13, 2026 · US
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Douglas jon patents
Douglas jon is listed as an inventor on 28 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Douglas jon |
| Total patents | 28 |
| First publication | Aug 6, 2015 |
| Latest publication | Jan 13, 2026 |
Notable patents
Publications ranked by popularity score, then publication date.
Air duct airflow sensor
US-2025354843-A1 · Nov 20, 2025 · US
Air duct airflow sensor
US-12385768-B2 · Aug 12, 2025 · US
Ecoair valve with pneumatic solenoid to provide auto zero function for air velocity pressure sensor
US-12247892-B2 · Mar 11, 2025 · US
Systems and methods for combined outdoor air fraction and vav unit control
US-2024118670-A1 · Apr 11, 2024 · US
Air duct airflow sensor
US-2024068850-A1 · Feb 29, 2024 · US
Ecoair valve with pneumatic solenoid to provide auto zero function for air velocity pressure sensor
US-2023251158-A1 · Aug 10, 2023 · US
Ecoair valve with pneumatic solenoid to provide auto zero function for air velocity pressure sensor
US-11630019-B2 · Apr 18, 2023 · US
Intelligent defrost control method
US-11384971-B2 · Jul 12, 2022 · US
Ecoair valve with pneumatic solenoid to provide auto zero function for air velocity pressure sensor
US-2021325274-A1 · Oct 21, 2021 · US
Recent patents
Latest publications not already listed above.
Intelligent defrost control method
US-2020309430-A1 · Oct 1, 2020 · US
Intelligent defrost control method
US-10746446-B2 · Aug 18, 2020 · US
Refrigerated display case having a central return air duct
US-2020196776-A1 · Jun 25, 2020 · US
HVAC system and an HVAC controller configured to generate master service alarms
US-10475324-B2 · Nov 12, 2019 · US
Defrost control using fan data
US-10352611-B2 · Jul 16, 2019 · US
Hvac system and an hvac controller configured to generate master service alarms
US-2019156649-A1 · May 23, 2019 · US
HVAC system and an HVAC controller configured to generate master service alarms
US-10192422-B2 · Jan 29, 2019 · US
Detecting and handling a blocked condition in the coil
US-10168067-B2 · Jan 1, 2019 · US
System for controlling operation of an HVAC system
US-9982930-B2 · May 29, 2018 · US
Defrost Control Using Fan Data
US-2018045453-A1 · Feb 15, 2018 · US
Defrost control using fan data
US-9803911-B2 · Oct 31, 2017 · US
Defrost Control Using Fan Data
US-2017191732-A1 · Jul 6, 2017 · US
Intelligent defrost control method
US-2017176072-A1 · Jun 22, 2017 · US
Defrost control using fan data
US-9605889-B2 · Mar 28, 2017 · US
Defrost Control Using Fan Data
US-2016258668-A1 · Sep 8, 2016 · US
Hvac system and an hvac controller configured to generate master service alarms
US-2016210842-A1 · Jul 21, 2016 · US
Defrost control using fan data
US-9341405-B2 · May 17, 2016 · US
System for controlling operation of an hvac system
US-2015219377-A1 · Aug 6, 2015 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Lennox Ind Inc | 18 |
| Johnson Controls Tyco IP Holdings LLP | 7 |
| Tyco Fire & Security Gmbh | 4 |
| Johnson Controls Tech Co | 2 |
| Lennox Ind Llc | 1 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| F25B2700/11 | 12 |
| F24F11/41 | 12 |
| F24F11/30 | 12 |
| F25B47/02 | 9 |
| F24F11/42 | 8 |