Single-Block Virtual Frame Buffer Translated to Multiple Physical Blocks for Multi-Block Display Refresh Generator
US RE41,967 Lapsed on the fee recordLapsed Jan 20, 2016 on the fee record · Low confidence
20-year base term ended Feb 22, 2022
Third maintenance fee unpaid; grace period ended. The USPTO has not yet posted the lapse.
Reissue of US 6,680,738, which was surrendered when this reissue was granted; its term and maintenance fees continue here.
Feb 22, 2002
Jan 20, 2016
Nov 30, 2010
May 31, 2022
How we calculated this date
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Feb 22, 2002, when the earliest non-provisional application in its chain was filed (this one was filed Jan 20, 2006) | Feb 22, 2022 | High confidence |
| Continuity chain | A reissue: its term follows the original patent's, with the original's term adjustment | follows the original patent | Medium confidence |
| Patent term adjustment | +98 days, the original patent's USPTO patent term adjustment record, which governs a reissue (35 U.S.C. 251). This reissue's own record carries none | May 31, 2022 | 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 | No fee event states this; the fee state is read from the payments the fee record holds; the fee record shows no payment for this window, and USPTO's status still reads "Patented Case" | lapsed Jan 20, 2016 | Low confidence |
| Computed term end | The steps above, in order | Jan 20, 2016 | 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.