Powder for Sulphur-Based Flux-Cored Wire, Flux-Cored Wire and Method for Producing a Flux-Cored Wire Using It
US 8,221,519 Lapsed on the fee recordLapsed Jul 17, 2024 on the fee record · High confidence
20-year base term ends Apr 15, 2030
Third maintenance fee unpaid; grace period ended.
Apr 15, 2010
Jul 17, 2024
Jul 17, 2012
May 30, 2030
How we calculated this date
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Apr 15, 2010, when this application, 12/760,747, was filed | Apr 15, 2030 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +45 days, USPTO patent term adjustment record | May 30, 2030 | 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 | 2 of 3 maintenance fees paid | lapsed Jul 17, 2024 | High confidence |
| Computed term end | The steps above, in order | Jul 17, 2024 | High 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
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