Chalkless, Inc.
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
0
Ending by 2030
Jul 2042
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 Nov 30, 2026The maintenance fee for Particulate Aerogel Material Kit for Grip Enhancement (US 11,660,257) comes due Nov 30, 2026. Unpaid by Jun 1, 2027, it lapses early.
- 1 fee due Apr 17, 2027The maintenance fee for Particulate Silica Silylate Kit for Treatment of Surfaces for Hydrophobicity Characteristics (US 11,786,449) comes due Apr 17, 2027. Unpaid by Oct 18, 2027, 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 6 of 6
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 11,660,257 | Particulate Aerogel Material Kit for Grip Enhancement In force · High confidence | In force | High confidence | |
| US 11,786,449 | Particulate Silica Silylate Kit for Treatment of Surfaces for Hydrophobicity Characteristics In force · High confidence | In force | High confidence | |
| US 12,758,480 | Particulate Silica Silylate Kit for Treatment of Surfaces for Hydrophobicity Characteristics In force · High confidence | In force | High confidence | |
| US 12,622,848 | Particulate Aerogel Material Kit for Grip Enhancement In force · Medium confidence | In force | Medium confidence | |
| US 12,383,927 | Devices and Methods for Applying a Substance to a Sports Ball In force · High confidence | In force | High confidence | |
| US 12,521,334 | Particulate Silica Silylate Kit for Treatment of Surfaces for Hydrophobicity Characteristics In force · High confidence | In force | High confidence |
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
Every application published under this name has become a patent.