PPT Technologies
Records under this name other than the patents PPT Technologies 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.
Showing 1 to 2 of 2 · Back to PPT Technologies
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,329,354 | Purification of organic solvent fluids Lapsed on the fee record Ended Feb 12, 2016 · From the USPTO record | Lapsed on the fee record | Ended Feb 12, 2016 | From the USPTO record |
| US 6,660,875 | Ion exchange purification of dielectric condensate precursor fluids and silicate esters such as tetraethylorthosilicate (TEOS) Lapsed on the fee record Ended Dec 9, 2007 · From the USPTO record | Lapsed on the fee record | Ended Dec 9, 2007 | From the USPTO record |