Poly-Flow Engineering, LLC
Records under this name other than patents Poly-Flow Engineering, LLC holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
Showing 1 to 6 of 6 · Back to Poly-Flow Engineering, LLC
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 9,514,972 | Fixture Drying Apparatus and Method Formerly held Lapsed on the fee record Ended Dec 6, 2024 · High confidence | Lapsed on the fee record | Ended Dec 6, 2024 | High confidence |
| US 7,216,655 | Wafer Container Washing Apparatus Formerly held Term ended Ended no later than May 13, 2020 · Low confidence | Term ended | Ended no later than May 13, 2020 | Low confidence |
| US 6,926,017 | Wafer Container Washing Apparatus Formerly held Term ended Term ended Nov 13, 2019 · Medium confidence | Term ended | Term ended Nov 13, 2019 | Medium confidence |
| US 6,248,177 | Method of cleaning a wafer carrier Formerly held Term ended Term ended Jan 8, 2019 · From the USPTO record | Term ended | Term ended Jan 8, 2019 | From the USPTO record |
| US 4,723,441 | Piping system for hazardous fluids Formerly held Term ended Term ended no later than Feb 9, 2008 · Low confidence | Term ended | Term ended no later than Feb 9, 2008 | Low confidence |
| US 4,779,652 | Unitary double wall piping system Formerly held Term ended Term ended no later than Oct 25, 2008 · Low confidence | Term ended | Term ended no later than Oct 25, 2008 | Low confidence |