Piotech Inc.
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
0
Ending by 2030
Jul 2037
Next term end
When these terms end
Held patents by the year their term ends
20262027202820292030203120322033203420352036203720382039204020412042204320442045
Fee deadlines
Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. A missed fee ends a patent at the end of the six month grace period that follows, not on the due date.
- 1 fee due Feb 22, 2027The maintenance fee for Multiple section showerhead assembly (US 11,731,145) comes due Feb 22, 2027. Unpaid by Aug 23, 2027, it lapses early.
- 2 fees due Mar 10 to 26, 2027 · next Mar 10
- 1 fee due Jun 3, 2027The maintenance fee for Load lock chamber and the cluster tool system using the same (US 10,497,591) comes due Jun 3, 2027. Unpaid by Dec 3, 2027, it lapses early.
- 1 fee due Nov 5, 2027The maintenance fee for Ceramic ring with a ladder structure (US 10,643,882) comes due Nov 5, 2027. Unpaid by May 5, 2028, it lapses early.
Recent changes
Nothing was recorded against this company's patents in the last 90 days.
Patents held now
Soonest term end first. Each date below is computed on that patent's own page, which shows the rule, the adjustments and the fee history it was derived from.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 10,497,591 | Load lock chamber and the cluster tool system using the same In force · From the USPTO record | In force | From the USPTO record | |
| US 10,643,882 | Ceramic ring with a ladder structure In force · From the USPTO record | In force | From the USPTO record | |
| US 10,410,909 | Waffer pedestal and support structure thereof In force · From the USPTO record | In force | From the USPTO record | |
| US 11,088,012 | Wafer susceptor apparatus with thermal insulation and method for manufacturing the same In force · From the USPTO record | In force | From the USPTO record | |
| US 11,437,253 | Wafer pedestal with contact array In force · From the USPTO record | In force | From the USPTO record | |
| US 11,767,592 | Gas-dispersing apparatus for multiple chemical resources In force · From the USPTO record | In force | From the USPTO record | |
| US 11,562,891 | Method of temperature measurement used in radio-frequency processing apparatus for semiconductor In force · From the USPTO record | In force | From the USPTO record | |
| US 11,731,145 | Multiple section showerhead assembly In force · From the USPTO record | In force | From the USPTO record | |
| US 11,488,802 | Semiconductor device for condition-controlled radio frequency system In force · From the USPTO record | In force | From the USPTO record | |
| US 12,020,975 | Apparatus and Method for Processing Wafer In force · High confidence | In force | High confidence |
Sources and methods
Compiled from the USPTO record, grants, published applications and recorded assignments, not yet reviewed by hand.
How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.
Published applications
US patent applications published under this name that have not become patents. An application is published about eighteen months after its earliest filing; one that has not been published is in no public record.
3 pending · 11 no status recorded