Light emitting diode by use of metal diffusion bonding technology and method of producing light emitting diode
US 7,704,770 Lapsed on the fee recordLapsed Apr 27, 2022 on the fee record · From the USPTO record
20-year base term ends Dec 11, 2026
Third maintenance fee unpaid; grace period ended.
Dec 11, 2006
Apr 27, 2022
Apr 27, 2010
May 16, 2028
How we calculated this date
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Dec 11, 2006, when this application, 11/636,557, was filed | Dec 11, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +522 days, USPTO patent term adjustment record | May 16, 2028 | 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 Apr 27, 2022 | High confidence |
| Computed term end | The steps above, in order | Apr 27, 2022 | 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.