Hatch Ltd.
2 more in force are now held by other companies
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
12
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 Dec 11, 2026The maintenance fee for Plug flow reactor with internal recirculation fluidized bed (US 10,315,176) comes due Dec 11, 2026. Unpaid by Jun 11, 2027, it lapses early.
- 1 fee due Feb 11, 2027The maintenance fee for Burner with velocity adjustment for flash smelter (US 9,103,592) comes due Feb 11, 2027. Unpaid by Aug 11, 2027, it lapses early.
- 1 fee due Mar 10, 2027The maintenance fee for System and method for detecting imperfections in a reflective surface (US 10,408,767) comes due Mar 10, 2027. Unpaid by Sep 10, 2027, it lapses early.
- 2 fees due Jul 7 to 16, 2027 · next Jul 7
- 1 fee due Sep 1, 2027The maintenance fee for Process for direct reduction of iron oxide (US 9,273,368) comes due Sep 1, 2027. Unpaid by Mar 1, 2028, it lapses early.
- 1 fee due Oct 26, 2027The maintenance fee for Method and apparatus for temperature control in a reactor vessel (US 9,322,076) comes due Oct 26, 2027. Unpaid by Apr 26, 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 7,968,048 | Composite sparger In force · From the USPTO record | In force | From the USPTO record | |
| US 8,245,653 | Split shell circular furnace and binding systems for circular furnaces In force · From the USPTO record | In force | From the USPTO record | |
| US 7,734,431 | Method and apparatus for fluid leak detection In force · From the USPTO record | In force | From the USPTO record | |
| US D709,510 | Tablet cover In force · From the USPTO record | In force | From the USPTO record | |
| US D727,918 | Tablet cover In force · From the USPTO record | In force | From the USPTO record | |
| US 8,176,941 | Apparatus for stabilization and deceleration of supersonic flow incorporating a diverging nozzle and perforated plate In force · From the USPTO record | In force | From the USPTO record | |
| US 8,702,842 | Method for removing sulfur from a gas stream In force · From the USPTO record | In force | From the USPTO record | |
| US 8,670,958 | Flash tube and flash vessel configuration for pressure letdown In force · From the USPTO record | In force | From the USPTO record | |
| US 9,476,291 | Method of controlling growth and heat loss of an in situ gravity drainage chamber formed with a condensing solvent process In force · From the USPTO record | In force | From the USPTO record | |
| US 8,857,512 | Situ extraction process for the recovery of hydrocarbons In force · From the USPTO record | In force | From the USPTO record |
Also on record, not counted in the 47: 2 patents in force now held by others · 22 lapsed for an unpaid fee · 40 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.
6 pending · 1 abandoned · 23 no status recorded