Ascensus Specialties Callery LLC
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
Recorded under 2 name spellings.
5
Ending by 2030
Sep 2027
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 Jan 7, 2027The maintenance fee for Process to Purify Dialkyl Sulfides (US 9,073,831) comes due Jan 7, 2027. Unpaid by Jul 7, 2027, it lapses early.
Recent changes
Nothing was recorded against this company's patents in the last 90 days.
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 6 of 6
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 7,858,827 | Process for Synthesis of Dialkoxyorganoboranes In force · High confidence | In force | High confidence | |
| US 8,013,189 | Accelerated Amide and Ester Reductions with Amine Boranes and Additives In force · High confidence | In force | High confidence | |
| US 8,106,200 | Pyridine Borane Complexes In force · High confidence | In force | High confidence | |
| US 9,073,831 | Process to Purify Dialkyl Sulfides In force · High confidence | In force | High confidence | |
| US 8,586,796 | Process to Purify Dialkyl Sulfides In force · High confidence | In force | High confidence | |
| US 9,000,206 | Process for Preparing Triorgano Borates with Low Alcohol Content In force · High confidence | In force | High confidence |
Also on record, not counted in the 6: 5 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.