Northgate Technologies Inc.
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
Recorded under 2 name spellings.
8
Ending by 2030
May 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 Dec 13, 2026The maintenance fee for Rounded invasive electrohydraulic lithotripsy probe with ports (US 11,672,554) comes due Dec 13, 2026. Unpaid by Jun 14, 2027, it lapses early.
- 1 fee due Mar 15, 2027The maintenance fee for Carboxy therapy applicator (US 9,132,245) comes due Mar 15, 2027. Unpaid by Sep 15, 2027, it lapses early.
- 1 fee due Apr 1, 2027The maintenance fee for Radially-firing electrohydraulic lithotripsy probe (US 10,426,500) comes due Apr 1, 2027. Unpaid by Oct 1, 2027, it lapses early.
- 1 fee due Jun 3, 2027The maintenance fee for Gas recirculation system and method (US 10,493,220) comes due Jun 3, 2027. Unpaid by Dec 3, 2027, it lapses early.
- 1 fee due Aug 13, 2027The maintenance fee for System for identifying the presence and correctness of a medical device accessory (US 11,896,794) comes due Aug 13, 2027. Unpaid by Feb 14, 2028, it lapses early.
- 2 fees due Sep 15 to 30, 2027 · next Sep 15
- 1 fee due Oct 16, 2027The maintenance fee for Anti-Microbial Surgical Access Device (US 11,957,378) comes due Oct 16, 2027. Unpaid by Apr 17, 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 8,613,738 | High-flow luer lock connector for a luer lock connection In force · From the USPTO record | In force | From the USPTO record | |
| US 7,704,223 | System and method for delivering a substance to a body cavity In force · From the USPTO record | In force | From the USPTO record | |
| US 9,345,870 | In-dwelling port for access into a body In force · From the USPTO record | In force | From the USPTO record | |
| US 8,663,271 | In-dwelling port for access into a body In force · From the USPTO record | In force | From the USPTO record | |
| US 7,740,288 | High-flow luer lock connector for a luer lock connection In force · From the USPTO record | In force | From the USPTO record | |
| US 10,086,154 | High-flow luer lock connector for a luer lock connection In force · From the USPTO record | In force | From the USPTO record | |
| US 9,579,114 | Radially-firing electrohydraulic lithotripsy probe In force · From the USPTO record | In force | From the USPTO record | |
| US 10,426,500 | Radially-firing electrohydraulic lithotripsy probe In force · From the USPTO record | In force | From the USPTO record | |
| US 11,559,318 | Radially-firing electrohydraulic lithotripsy probe In force · From the USPTO record | In force | From the USPTO record | |
| US 9,849,275 | System for identifying the presence and correctness of a tubing set In force · From the USPTO record | In force | From the USPTO record |
Also on record, not counted in the 37: 7 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.
2 pending · 1 abandoned · 6 no status recorded