Questech Corporation
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
4
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 Feb 28, 2027The maintenance fee for Natural Stone Sealer Compositions (US 11,739,234) comes due Feb 28, 2027. Unpaid by Aug 30, 2027, it lapses early.
- 1 fee due Jul 14, 2027The maintenance fee for Natural Stone Sealer Compositions (US 10,532,956) comes due Jul 14, 2027. Unpaid by Jan 14, 2028, 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 7 of 7
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US D688,935 | Switch plate assembly In force · High confidence | In force | High confidence | |
| US 8,999,507 | Method for Applying and Curing by Uv Radiation a Sealant System onto Natural Stone Tiles to Provide Permanent Sealing, Protection, Abrasion Resistance, Stain and Mold Resistance, and Natural Stone Tiles Produced by the Method In force · Medium confidence | In force | Medium confidence | |
| US D732,375 | Switch Plate Assembly In force · High confidence | In force | High confidence | |
| US 8,323,749 | Method for applying and curing by UV radiation a sealant system onto natural stone tiles to provide permanent sealing, protection, abrasion resistance, stain and mold resistance In force · From the USPTO record | In force | From the USPTO record | |
| US D823,616 | Wall Niche with Centering Devices and Spacers In force · High confidence | In force | High confidence | |
| US 10,532,956 | Natural Stone Sealer Compositions In force · High confidence | In force | High confidence | |
| US 11,739,234 | Natural Stone Sealer Compositions In force · High confidence | In force | High confidence |
Also on record, not counted in the 7: 1 lapsed for an unpaid fee · 20 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.
3 no status recorded