Spansion LLC
670 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 5 name spellings.
25
Ending by 2030
Nov 2026
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 Jun 1, 2027The maintenance fee for Method for manufacturing a contact for a semiconductor component and related structure (US 9,202,758) comes due Jun 1, 2027. Unpaid by Dec 1, 2027, it lapses early.
- 1 fee due Oct 19, 2027The maintenance fee for Dielectric extension to mitigate short channel effects (US 9,318,333) comes due Oct 19, 2027. Unpaid by Apr 19, 2028, it lapses early.
Recent changes
- 36 terms have ended since Aug 16, 2026
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 7,432,178 | Bit Line Implant In force · High confidence | In force | High confidence | |
| US 8,748,972 | Flash Memory Devices and Methods for Fabricating Same In force · High confidence | In force | High confidence | |
| US 7,972,951 | Memory Device Etch Methods In force · High confidence | In force | High confidence | |
| US 7,884,030 | Gap-Filling with Uniform Properties In force · High confidence | In force | High confidence | |
| US 7,670,959 | Memory Device Etch Methods In force · High confidence | In force | High confidence | |
| US 8,979,550 | Contact Configuration for Undertaking Tests on Circuit Board In force · Low confidence | In force | Low confidence | |
| US 7,558,907 | Virtual Memory Card Controller In force · High confidence | In force | High confidence | |
| US 7,675,104 | Integrated Circuit Memory System Employing Silicon Rich Layers In force · High confidence | In force | High confidence | |
| US 8,705,731 | Selection of a Lookup Table with Data Masked with a Combination of an Additive and Multiplicative Mask In force · High confidence | In force | High confidence | |
| US 8,946,020 | Method of forming controllably conductive oxide In force · High confidence | In force | High confidence |
Also on record, not counted in the 29: 670 patents in force now held by others · 606 lapsed for an unpaid fee · 1,486 ended at full term · 2 past the fee grace period. 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.
84 abandoned · 4 no status recorded