Greyrock Technology, LLC
6 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.
1
Ending by 2030
Feb 2028
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 28, 2027The maintenance fee for Catalyst and Process for the Production of Diesel Fuel from Natural Gas, Natural Gas Liquids, or Other Gaseous Feedstocks (US 9,090,831) comes due Jan 28, 2027. Unpaid by Jul 28, 2027, it lapses early.
- 1 fee due Aug 6, 2027The maintenance fee for Process for the Synthesis of High-Value, Low Carbon Chemical Products (US 11,891,579) comes due Aug 6, 2027. Unpaid by Feb 7, 2028, it lapses early.
Recent changes
- 1 of the patents on this record was granted 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 7,718,832 | Combination catalytic process for producing ethanol from synthesis gas In force · From the USPTO record | In force | From the USPTO record | |
| US 8,394,862 | Catalytic process for the direct production of hydrocarbon fuels from syngas In force · From the USPTO record | In force | From the USPTO record | |
| US 9,476,005 | High-performance diesel fuel lubricity additive In force · From the USPTO record | In force | From the USPTO record | |
| US 9,909,071 | Process for small scale gas to liquid hydrocarbon production through recycling In force · From the USPTO record | In force | From the USPTO record | |
| US 9,090,831 | Catalyst and Process for the Production of Diesel Fuel from Natural Gas, Natural Gas Liquids, or Other Gaseous Feedstocks In force · Medium confidence | In force | Medium confidence | |
| US 9,631,147 | Catalyst and Process for the Production of Diesel Fuel from Natural Gas, Natural Gas Liquids, or Other Gaseous Feedstock In force · Medium confidence | In force | Medium confidence | |
| US 10,260,006 | Catalyst and process for the production of diesel fuel from natural gas, natural gas liquids, or other gaseous feedstocks In force · Medium confidence | In force | Medium confidence | |
| US 11,104,853 | Catalyst and process for the production of diesel fuel from national gas, natural gas liquids, or other gaseous feedstocks In force · Medium confidence | In force | Medium confidence | |
| US 9,896,626 | Apparatus and process for efficient production of liquid fuels from gaseous hydrocarbons In force · From the USPTO record | In force | From the USPTO record | |
| US 10,260,005 | Catalysts, related methods and reaction products In force · High confidence | In force | High confidence |
Also on record, not counted in the 19: 6 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.
3 pending · 2 no status recorded