Prayon
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
0
Ending by 2030
Sep 2033
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.
- 1 fee due Sep 3, 2027The maintenance fee for Iron-Based Nutritive Composition (US 10,577,288) comes due Sep 3, 2027. Unpaid by Mar 3, 2028, it lapses early.
Recent changes
- 1 of the patents on this record was granted 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.
Showing 1 to 5 of 5
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 9,505,664 | Inorganic nutritive iron composition In force · From the USPTO record | In force | From the USPTO record | |
| US 10,577,288 | Iron-Based Nutritive Composition In force · High confidence | In force | High confidence | |
| US 11,161,741 | Method for producing polyphosphoric acid and device for such a method In force · From the USPTO record | In force | From the USPTO record | |
| US 12,441,617 | Method for purification of at least one aqueous solution of phosphoric acid In force · From the USPTO record | In force | From the USPTO record | |
| US 12,789,143 | Process for Purifying a Phosphate Containing Acidic Solution Comprising Impurities and Apparatus for Applying Same In force · High confidence | In force | High confidence |
Also on record, not counted in the 5: 3 lapsed for an unpaid fee · 7 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.
2 pending · 1 abandoned · 4 no status recorded