1304338 Alberta Ltd.
10 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.
8
Ending by 2030
Nov 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 15, 2027The maintenance fee for Method to upgrade heavy oil in a temperature gradient reactor (TGR) (US 9,132,415) comes due Mar 15, 2027. Unpaid by Sep 15, 2027, it lapses early.
- 2 fees due Oct 2 to 28, 2027 · next Oct 2
Recent changes
Nothing was recorded against this company's patents in the last 90 days.
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 8,088,528 | Method to condense and recover carbon dioxide from fuel cells In force · From the USPTO record | In force | From the USPTO record | |
| US 8,128,317 | Method of increasing storage capacity of natural gas storage caverns In force · From the USPTO record | In force | From the USPTO record | |
| US 7,854,567 | Method to increase storage capacity of natural gas storage caverns with a refrigeration system In force · From the USPTO record | In force | From the USPTO record | |
| US 8,429,932 | Method for selective extraction of natural gas liquids from “rich” natural gas In force · From the USPTO record | In force | From the USPTO record | |
| US 8,375,717 | Method to pre-heat natural gas at gas pressure reduction stations In force · From the USPTO record | In force | From the USPTO record | |
| US 9,844,748 | Method to condense and recover carbon dioxide (CO2) from CO2 containing gas streams In force · From the USPTO record | In force | From the USPTO record | |
| US 8,555,671 | Method of conditioning natural gas in preparation for storage In force · From the USPTO record | In force | From the USPTO record | |
| US 8,640,494 | Method to produce natural gas liquids NGLs at gas Pressure Reduction Stations In force · From the USPTO record | In force | From the USPTO record | |
| US 8,585,891 | Extraction and upgrading of bitumen from oil sands In force · From the USPTO record | In force | From the USPTO record | |
| US 9,511,935 | Cascading processor In force · From the USPTO record | In force | From the USPTO record |
Also on record, not counted in the 21: 10 patents in force now held by others. 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 no status recorded