Page Buffer Circuit of Memory Device and Program Method
US RE45,051 In forceTerm ends Dec 28, 2026 · Low confidence
20-year base term ends Dec 28, 2026
Reissue of US 7,848,157, which was surrendered when this reissue was granted; its term and maintenance fees continue here.
Dec 28, 2006
Dec 28, 2026
Jul 29, 2014
How we calculated this date
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Dec 28, 2006, when the earliest non-provisional application in its chain was filed (this one was filed Nov 27, 2012); a parent in its chain could not be resolved (the next row) | Dec 28, 2026 | High confidence |
| Continuity chain | A reissue: its term follows the original patent's, with the original's term adjustment; a parent in the chain could not be resolved | dated from this application's own claim | Low confidence |
| Patent term adjustment | No term adjustment record on a grant after 2005, so none is added | no change | Medium confidence |
| Terminal disclaimer cap | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | The reissue's fees post to its original, whose fee record is not available (likely before 2001) | In force | Medium confidence |
| Computed term end | The steps above, in order | Dec 28, 2026 | Low confidence |
Sources
Google Patents · The patent document at USPTO · Assignment records at USPTO
USPTO account required: This application in Patent Center · USPTO's maintenance fee lookup
Maintenance fee events come from USPTO's own fee records. Its fee lookup asks for the patent number and the application number.
Not on this page: the patent's family, its recorded assignments and its citation count. USPTO's assignment records, linked above, list every recorded assignment.
Every date shows its work: the base term, any term adjustment or extension, any disclaimer cap, and the maintenance fee record, each with a confidence tier. How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.