Duvas Technologies Limited
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
0
Ending by 2030
Dec 2031
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 May 24, 2027The maintenance fee for Optical absorption spectroscopy (US 9,194,794) comes due May 24, 2027. Unpaid by Nov 24, 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 9,194,794 | Optical absorption spectroscopy In force · From the USPTO record | In force | From the USPTO record | |
| US 9,494,511 | System and apparatus for measurement and mapping of pollutants In force · From the USPTO record | In force | From the USPTO record | |
| US 10,107,741 | Input and output optical systems for multipass spectroscopic absorption cells In force · From the USPTO record | In force | From the USPTO record | |
| US 10,935,487 | Input and output optical systems for multipass spectroscopic absorption cells In force · From the USPTO record | In force | From the USPTO record | |
| US 10,942,111 | Input and output optical systems for multipass spectroscopic absorption cells In force · From the USPTO record | In force | From the USPTO record | |
| US 10,921,553 | Optical alignment apparatuses and methods for optics used in absorption cell spectrometers In force · From the USPTO record | In force | From the USPTO record |
Also on record, not counted in the 6: 1 lapsed for an unpaid fee. 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
Every application published under this name has become a patent.