Weltrend Semiconductor Inc.
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
2
Ending by 2030
Nov 2026
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 Mar 10, 2027The maintenance fee for Method for detecting a heart rate (US 10,405,802) comes due Mar 10, 2027. Unpaid by Sep 10, 2027, it lapses early.
- 1 fee due Aug 11, 2027The maintenance fee for Switching mode power supply with dynamic high-voltage charging to maintain operating voltage (US 10,560,028) comes due Aug 11, 2027. Unpaid by Feb 11, 2028, it lapses early.
- 1 fee due Nov 12, 2027The maintenance fee for Barcode detection method and barcode detection system for increasing detection efficiency by using gray level flip counts (US 10,650,204) comes due Nov 12, 2027. Unpaid by May 12, 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 7,424,055 | Method of Video Motion Detection by Adjusting the Fields' Length in the Temporal Domain and Selecting the Configurable Patterns in the Spatial Domain In force · High confidence | In force | High confidence | |
| US 7,447,355 | Method for defining chromaticity regions according to luminance levels and adjusting chromaticity of images accordingly In force · From the USPTO record | In force | From the USPTO record | |
| US 8,634,506 | Frequency calibration circuit for automatically calibrating frequency and method thereof In force · From the USPTO record | In force | From the USPTO record | |
| US 8,324,821 | Two-wired LED light adjusting system In force · From the USPTO record | In force | From the USPTO record | |
| US 9,960,594 | System for dynamically controlling an operation of over voltage protection and a voltage converter In force · From the USPTO record | In force | From the USPTO record | |
| US 10,048,719 | Apparatus for automatically calibrating clock of non-crystal oscillator and method thereof In force · From the USPTO record | In force | From the USPTO record | |
| US 10,255,657 | Image Perspective Conversion Method by Converting Coordinates of Polygonal Sub-regions and System Thereof In force · High confidence | In force | High confidence | |
| US 10,321,054 | Panoramic Image Stitching Method for reducing Geometric Distortion by Using an Image Registration Process and System Thereof In force · High confidence | In force | High confidence | |
| US 10,164,518 | Power control device capable of detecting the condition of the sensing resistor In force · From the USPTO record | In force | From the USPTO record | |
| US 10,141,836 | Control circuit capable of detecting status of receiving power and decreasing voltage of capacitor accordingly In force · From the USPTO record | In force | From the USPTO record |
Also on record, not counted in the 35: 6 lapsed for an unpaid fee · 1 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.
1 pending · 6 no status recorded