Device for centering and clamping tubular parts, comprising means for regulating the gas flow rate in order to control the oxygen content
US 9,272,353 Lapsed on the fee recordLapsed Mar 1, 2020 on the fee record · From the USPTO record
20-year base term ended May 22, 2026
First maintenance fee unpaid; grace period ended.
May 22, 2006
Mar 1, 2020
Mar 1, 2016
Apr 22, 2030
How we calculated this date
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts May 22, 2006, when this application, 11/914,997, was filed | May 22, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1431 days, USPTO patent term adjustment record | Apr 22, 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 | 0 of 3 maintenance fees paid | lapsed Mar 1, 2020 | High confidence |
| Computed term end | The steps above, in order | Mar 1, 2020 | 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
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.