Lightweight Thermal Shield
US RE48,394 Lapsed (fee unpaid)Lapsed Nov 17, 2025 · Low confidence
20-year base term ends Feb 21, 2034
Recorded as expired for non-payment on Nov 17, 2025 · the fee record holds no event that dates the missed window.
Reissue of US 9,784,404, which was surrendered when this reissue was granted; its term and maintenance fees continue here.
Feb 21, 2014
Nov 17, 2025
Jan 12, 2021
Feb 21, 2034
How we calculated this date
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Feb 21, 2014, when the earliest non-provisional application in its chain was filed (this one was filed Aug 30, 2019); a parent in its chain could not be resolved (the next row) | Feb 21, 2034 | 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) | no event dates the lapse | Medium confidence |
| USPTO status record | Recorded as expired for non-payment on Nov 17, 2025 | lapsed Nov 17, 2025 | Medium confidence |
| Computed term end | The steps above, in order | Nov 17, 2025 | 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.