Seed Co., Ltd.
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
2
Ending by 2030
Jun 2030
Next term end
When these terms end
Held patents by the year their term ends
20262027202820292030203120322033203420352036203720382039204020412042204320442045
Fee deadlines
Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. A missed fee ends a patent at the end of the six month grace period that follows, not on the due date.
- 2 fees due Nov 3 to 5, 2027 · next Nov 3
Recent changes
- 1 term has ended since Aug 16, 2026
Patents held now
Soonest term end first. Each date below is computed on that patent's own page, which shows the rule, the adjustments and the fee history it was derived from.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 8,940,318 | Hydrogel contact lens for sustained drug release and drug release method using hydrogel contact lens for sustained drug release In force · From the USPTO record | In force | From the USPTO record | |
| US RE46,044 | Soft contact lens In force · From the USPTO record | In force | From the USPTO record | |
| US 9,329,408 | Wettable hydrogel contact lens and method for producing same In force · From the USPTO record | In force | From the USPTO record | |
| US 9,486,362 | Ring-shaped device In force · From the USPTO record | In force | From the USPTO record | |
| US 9,921,419 | Annular device In force · From the USPTO record | In force | From the USPTO record | |
| US 10,668,157 | Anionic drug-containing medical device In force · From the USPTO record | In force | From the USPTO record | |
| US 10,642,069 | Production method of unhydrated ophthalmic lens and unhydrated ophthalmic lens In force · From the USPTO record | In force | From the USPTO record | |
| US 10,669,226 | Polymerizable triptycene derivative compound In force · From the USPTO record | In force | From the USPTO record | |
| US 11,439,146 | Anti-Acanthamoeba contact lens solution In force · From the USPTO record | In force | From the USPTO record | |
| US 11,119,338 | Soft Contact Lens and Method for Suppressing Attachment of Soft Contact Lens onto Cornea In force · High confidence | In force | High confidence |
Also on record, not counted in the 17: 20 lapsed for an unpaid fee · 2 ended at full term. List them
Sources and methods
Compiled from the USPTO record, grants, published applications and recorded assignments, not yet reviewed by hand.
How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.
Published applications
US patent applications published under this name that have not become patents. An application is published about eighteen months after its earliest filing; one that has not been published is in no public record.
4 pending · 5 no status recorded