HC Photonics Corp.
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
Recorded under 2 name spellings.
7
Ending by 2030
Jan 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 Mar 19, 2027The maintenance fee for Cavity-enhanced frequency mixer for classical and quantum applications (US 11,762,262) comes due Mar 19, 2027. Unpaid by Sep 20, 2027, it lapses early.
- 1 fee due Apr 30, 2027The maintenance fee for Self-seeded OPA system (US 11,803,097) comes due Apr 30, 2027. Unpaid by Nov 1, 2027, it lapses early.
Recent changes
- 2 terms have ended since Aug 17, 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 7,460,295 | Periodic poling structure and electrode element and method for preparing the same In force · From the USPTO record | In force | From the USPTO record | |
| US 7,428,097 | Poled structure with inhibition blocks In force · From the USPTO record | In force | From the USPTO record | |
| US 7,474,458 | Method for preparing a poled structure with inhibition blocks In force · From the USPTO record | In force | From the USPTO record | |
| US 7,486,432 | Method for preparing a periodically poled structure In force · From the USPTO record | In force | From the USPTO record | |
| US 7,502,163 | Method for Preparing a Poled Structure by Using Leakage and Tunnel Effects In force · High confidence | In force | High confidence | |
| US 7,515,794 | Periodically poled element having a suppressing structure for the domain spreading In force · From the USPTO record | In force | From the USPTO record | |
| US 8,201,947 | Wavelength converter and green light source and projection apparatus using the same In force · From the USPTO record | In force | From the USPTO record | |
| US 9,583,912 | Compact optical and laser systems and ultrafast laser utilizing the same In force · From the USPTO record | In force | From the USPTO record | |
| US 9,711,933 | Laser system and laser outputting method In force · From the USPTO record | In force | From the USPTO record | |
| US 11,762,262 | Cavity-enhanced frequency mixer for classical and quantum applications In force · From the USPTO record | In force | From the USPTO record |
Also on record, not counted in the 11: 3 lapsed for an unpaid fee · 6 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.
7 no status recorded