Tda Research, Inc.
4 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.
Recorded under 2 name spellings.
1
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 Dec 2, 2026The maintenance fee for Method of encapsulating waste (US 9,044,796) comes due Dec 2, 2026. Unpaid by Jun 2, 2027, it lapses early.
- 1 fee due Mar 1, 2027The maintenance fee for High Capacity Carbon Dioxide Sorbent (US 9,120,079) comes due Mar 1, 2027. Unpaid by Sep 1, 2027, it lapses early.
- 1 fee due Apr 17, 2027The maintenance fee for Air separation sorbent and vacuum assisted pressure swing adsorption process using the same (US 11,786,859) comes due Apr 17, 2027. Unpaid by Oct 18, 2027, it lapses early.
- 2 fees due Aug 6 to 13, 2027 · next Aug 6
- 1 fee due Sep 29, 2027The maintenance fee for Surfactant Composition and Method for Decontamination (US 9,295,865) comes due Sep 29, 2027. Unpaid by Mar 29, 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 7,541,312 | Porous Carbons from Carbohydrates In force (reinstated) · High confidence | In force (reinstated) | High confidence | |
| US 9,295,865 | Surfactant Composition and Method for Decontamination In force · High confidence | In force | High confidence | |
| US 9,044,796 | Method of encapsulating waste In force · From the USPTO record | In force | From the USPTO record | |
| US 9,120,079 | High Capacity Carbon Dioxide Sorbent In force · High confidence | In force | High confidence | |
| US 9,040,635 | Renewable Polymer and Method of Making In force · High confidence | In force | High confidence | |
| US 9,504,955 | Carbon Dioxide Separation Using Adsorption with Steam Regeneration In force · High confidence | In force | High confidence | |
| US 9,527,029 | Circulating Moving Bed System for CO2 Separation, and Method of Same In force · High confidence | In force | High confidence | |
| US 10,876,901 | Burn saver device In force · From the USPTO record | In force | From the USPTO record | |
| US 9,539,540 | Rotary Moving Bed for CO2 Separation and Use of Same In force · High confidence | In force | High confidence | |
| US 9,446,343 | Simulated Moving Bed System for CO2 Separation, and Method of Same In force · High confidence | In force | High confidence |
Also on record, not counted in the 39: 4 patents in force now held by others · 37 lapsed for an unpaid fee · 9 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 pending · 7 abandoned · 3 no status recorded