Entech Instruments Inc.
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
0
Ending by 2030
Sep 2037
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 Jun 10, 2027The maintenance fee for Vacuum-assisted sample extraction device and method (US 10,502,664) comes due Jun 10, 2027. Unpaid by Dec 10, 2027, it lapses early.
- 2 fees due Aug 13 to 20, 2027 · next Aug 13
- 1 fee due Oct 2, 2027The maintenance fee for System and method of trace-level analysis of chemical compounds (US 11,946,912) comes due Oct 2, 2027. Unpaid by Apr 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.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 11,067,548 | Multi-capillary column pre-concentration system for enhanced sensitivity in gas chromatography (GC) and gas chromatography-mass spectrometry (GCMS) In force · From the USPTO record | In force | From the USPTO record | |
| US 10,502,664 | Vacuum-assisted sample extraction device and method In force · From the USPTO record | In force | From the USPTO record | |
| US 10,849,600 | Breath condensate and saliva analysis using oral rinse In force · From the USPTO record | In force | From the USPTO record | |
| US 11,549,921 | System and method for real time monitoring of a chemical sample In force · From the USPTO record | In force | From the USPTO record | |
| US 10,928,364 | Thermal desorber for gas chromatography sample introduction with improved compound recovery and enhanced matrix management In force · From the USPTO record | In force | From the USPTO record | |
| US 11,169,124 | System and method for real time monitoring of a chemical sample In force · From the USPTO record | In force | From the USPTO record | |
| US 11,162,925 | High performance sub-ambient temperature multi-capillary column preconcentration system for volatile chemical analysis by gas chromatography In force · From the USPTO record | In force | From the USPTO record | |
| US D1,034,249 | Canister In force · From the USPTO record | In force | From the USPTO record | |
| US 12,791,447 | Hybrid Capillary/Packed Trap and Method of Use In force · Medium confidence | In force | Medium confidence | |
| US 11,247,204 | Sample Preconcentration System and Method for Use with Gas Chromatography In force · Medium confidence | In force | Medium 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
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 pending · 5 no status recorded