Corner Star Limited
2 more in force are now held by other companies
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
Recorded under 2 name spellings.
11
Ending by 2030
Jun 2029
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.
- 2 fees due Jan 2 to 23, 2027 · next Jan 2
- 2 fees due Feb 25, 2027
- 3 fees due Mar 10 to 22, 2027 · next Mar 10
- 4 fees due Apr 13 to 22, 2027 · next Apr 13
- 1 fee due May 3, 2027The maintenance fee for Processes and Systems for Purifying Silane (US 9,174,848) comes due May 3, 2027. Unpaid by Nov 3, 2027, it lapses early.
- 2 fees due Jun 29 to 30, 2027 · next Jun 29
- 1 fee due Sep 29, 2027The maintenance fee for Gas Decomposition Reactor Feedback Control Using Raman Spectrometry (US 9,297,765) comes due Sep 29, 2027. Unpaid by Mar 29, 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 8,404,206 | Methods for Producing Polycrystalline Silicon That Reduce the Deposition of Silicon on Reactor Walls In force · High confidence | In force | High confidence | |
| US 8,728,574 | Methods for Introducing a First Gas and a Second Gas into a Reaction Chamber In force · Medium confidence | In force | Medium confidence | |
| US 8,906,313 | Fluidized Bed Reactor Systems In force · High confidence | In force | High confidence | |
| US 9,353,457 | Weir Method for Improved Single Crystal Growth in a Continuous Czochralski Process In force · High confidence | In force | High confidence | |
| US 8,257,496 | Crucible Weight Measurement System for Controlling Feedstock Introduction in Czochralski Crystal Growth In force (reinstated) · High confidence | In force (reinstated) | High confidence | |
| US 8,834,825 | Processes for Producing Silane in a Bubble Column In force · High confidence | In force | High confidence | |
| US 8,828,324 | Fluidized Bed Reactor Systems and Distributors for Use in Same In force · High confidence | In force | High confidence | |
| US 8,974,761 | Methods for Producing Silane In force · High confidence | In force | High confidence | |
| US 9,011,803 | Systems for Producing Silane In force · High confidence | In force | High confidence | |
| US 9,487,406 | Systems for Producing Silane In force · High confidence | In force | High confidence |
Also on record, not counted in the 67: 2 patents in force now held by others · 23 lapsed for an unpaid fee · 3 ended at full term. List them
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.
13 abandoned · 4 no status recorded