Stress Relieved Welds in Positive Expulsion Fuel Tanks with Elastomeric Diaphragm
US 10,139,047 Lapsed on the fee recordLapsed Nov 27, 2022 on the fee record · High confidence
20-year base term ends Jul 13, 2035
First maintenance fee unpaid; grace period ended.
Jul 13, 2015
Nov 27, 2022
Nov 27, 2018
Feb 5, 2037
How we calculated this date
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Jul 13, 2015, when this application, 14/797,352, was filed | Jul 13, 2035 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +573 days, USPTO patent term adjustment record | Feb 5, 2037 | 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 Nov 27, 2022 | High confidence |
| Computed term end | The steps above, in order | Nov 27, 2022 | 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
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.