Centrak, Inc.
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
22
Ending by 2030
Jul 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 Jan 21, 2027The maintenance fee for Low Frequency Magnetic Induction Positioning System And Method (US 9,086,469) comes due Jan 21, 2027. Unpaid by Jul 21, 2027, it lapses early.
- 1 fee due Feb 27, 2027The maintenance fee for Noise-tolerant security system (US 10,395,456) comes due Feb 27, 2027. Unpaid by Aug 27, 2027, it lapses early.
- 2 fees due Jun 17 to 22, 2027 · next Jun 17
- 1 fee due Jul 5, 2027The maintenance fee for Methods and systems for synchronized infrared real time location (US 9,231,699) comes due Jul 5, 2027. Unpaid by Jan 5, 2028, it lapses early.
- 3 fees due Sep 17 to 30, 2027 · next Sep 17
- 1 fee due Oct 5, 2027The maintenance fee for System and method for infrared signal-strength RTLS (US 9,306,665) comes due Oct 5, 2027. Unpaid by Apr 5, 2028, it lapses early.
Recent changes
- 1 term has ended 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 8,514,078 | Anti-Theft Security Device and Perimeter Detection System In force (reinstated) · High confidence | In force (reinstated) | High confidence | |
| US 7,671,741 | Anti-Theft Security Device and Perimeter Detection System In force (reinstated) · High confidence | In force (reinstated) | High confidence | |
| US 7,336,182 | Wireless Tracking System and Method with Optical Tag Removal Detection In force · High confidence | In force | High confidence | |
| US 7,443,297 | Wireless Tracking System and Method with Optical Tag Removal Detection In force · High confidence | In force | High confidence | |
| US 7,564,357 | Wireless Tracking System and Method with Optical Tag Removal Detection In force · Medium confidence | In force | Medium confidence | |
| US 8,907,764 | Methods and systems for synchronized ultrasonic real time location In force · From the USPTO record | In force | From the USPTO record | |
| US 7,619,532 | Dual antenna base station for improved RFID localization In force (reinstated) · From the USPTO record | In force (reinstated) | From the USPTO record | |
| US 8,633,806 | Two directional information flow in real time location sensing RFID networks In force · From the USPTO record | In force | From the USPTO record | |
| US 7,636,046 | Wireless Tracking System and Method with Extreme Temperature Resistant Tag In force · High confidence | In force | High confidence | |
| US 8,248,242 | Wireless Tracking System and Method with Extreme Temperature Resistant Tag In force · High confidence | In force | High confidence |
Also on record, not counted in the 51: 8 lapsed for an unpaid fee · 24 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 · 2 no status recorded