TPC Group LLC
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
1
Ending by 2030
Aug 2030
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.
- 3 fees due Jul 7 to 28, 2027 · next Jul 7
- 1 fee due Aug 23, 2027The maintenance fee for Polyisobutylene Prepared at High Velocity and Circulation Rate (US 9,266,980) comes due Aug 23, 2027. Unpaid by Feb 23, 2028, it lapses early.
- 1 fee due Oct 12, 2027The maintenance fee for Mid-Range Vinylidene Content, High Viscosity Polyisobutylene Polymers (US 9,309,339) comes due Oct 12, 2027. Unpaid by Apr 12, 2028, it lapses early.
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 9,809,665 | Polyisobutylene production process with improved efficiencies and/or for forming products having improved characteristics and polyisobutylene products produced thereby In force · Medium confidence | In force | Medium confidence | |
| US 9,353,025 | Process for Selective Removal of Acetylenes from Gaseous Streams In force · High confidence | In force | High confidence | |
| US 8,524,843 | Production of Highly Reactive Low Molecular Weight Pib Oligomers In force · High confidence | In force | High confidence | |
| US 9,453,089 | Production of Highly Reactive Low Molecular Weight Pib Oligomers In force · High confidence | In force | High confidence | |
| US 9,856,335 | Production of Highly Reactive Low Molecular Weight Pib Oligomers In force · High confidence | In force | High confidence | |
| US 9,598,655 | Adducts of Low Molecular Weight PIB With Low Polydispersity and High Vinylidene Content In force · Medium confidence | In force | Medium confidence | |
| US 8,946,361 | Polyisobutylene Prepared at High Velocity and Circulation Rate In force · High confidence | In force | High confidence | |
| US 9,074,026 | Polyisobutylene Prepared with Low Diluent Content Reaction Medium In force · High confidence | In force | High confidence | |
| US 9,266,980 | Polyisobutylene Prepared at High Velocity and Circulation Rate In force · High confidence | In force | High confidence | |
| US 10,052,608 | Low Emissions Oxidative Dehydrogenation Apparatus for Producing Butadiene In force · High confidence | In force | High confidence |
Also on record, not counted in the 31: 6 lapsed for an unpaid fee · 17 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.
1 pending