Metal matrix materials reinforced with shape memory fibers for enhanced ductility and energy absorption capacity, and method of manufacturing same
US 6,025,080 Lapsed on the fee recordLapsed Feb 15, 2004 on the fee record · From the USPTO record
20-year base term ended Dec 8, 2017
First maintenance fee unpaid; grace period ended.
Dec 8, 1997
Feb 15, 2004
Feb 15, 2000
Dec 8, 2017
How we calculated this date
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Dec 8, 1997, when this application, 08/986,402, was filed | Dec 8, 2017 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 0 of 3 maintenance fees paid | lapsed Feb 15, 2004 | High confidence |
| Computed term end | The steps above, in order | Feb 15, 2004 | From the USPTO record |
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
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