Universal Vortex, Inc.
Records under this name other than the patents Universal Vortex, Inc. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned. None of them is counted in the 1 patents it holds.
Back to Universal Vortex, Inc.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 6,289,679 | Non-freeze enhancement in the vortex tube Term ended Term ended Jul 12, 2020 · From the USPTO record | Term ended | Term ended Jul 12, 2020 | From the USPTO record |
| US 6,082,116 | Vortex pilot gas heater Term ended Term ended Jul 10, 2018 · From the USPTO record | Term ended | Term ended Jul 10, 2018 | From the USPTO record |
| US 4,735,094 | Dual bluff body vortex flowmeter Formerly held Term ended Term ended no later than Apr 5, 2008 · Low confidence | Term ended | Term ended no later than Apr 5, 2008 | Low confidence |
| US 5,327,728 | Method of designing a vortex tube for energy separation Term ended Term ended no later than Jul 12, 2014 · Low confidence | Term ended | Term ended no later than Jul 12, 2014 | Low confidence |
| US 5,561,982 | Method for energy separation and utilization in a vortex tube which operates with pressure not exceeding atmospheric pressure Term ended Term ended no later than Oct 8, 2016 · Low confidence | Term ended | Term ended no later than Oct 8, 2016 | Low confidence |
| US 5,582,012 | Method of natural gas pressure reduction on the city gate stations Term ended Term ended no later than Dec 10, 2016 · Low confidence | Term ended | Term ended no later than Dec 10, 2016 | Low confidence |
| US 5,749,231 | Non-freezing vortex tube Term ended Term ended no later than May 12, 2018 · Low confidence | Term ended | Term ended no later than May 12, 2018 | Low confidence |
| US 5,819,541 | Method of beverage cooling/heating on vehicles Term ended Term ended no later than Oct 13, 2018 · Low confidence | Term ended | Term ended no later than Oct 13, 2018 | Low confidence |
| US 5,911,740 | Method of heat transfer enhancement in a vortex tube Term ended Term ended no later than Jun 15, 2019 · Low confidence | Term ended | Term ended no later than Jun 15, 2019 | Low confidence |
| US 5,937,654 | Vortex tube for snow making Term ended Term ended no later than Aug 17, 2019 · Low confidence | Term ended | Term ended no later than Aug 17, 2019 | Low confidence |