Riverfield Inc.
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
Recorded under 4 name spellings.
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 Feb 15, 2027The maintenance fee for High-frequency forceps (US 11,723,717) comes due Feb 15, 2027. Unpaid by Aug 16, 2027, it lapses early.
- 1 fee due May 7, 2027The maintenance fee for Slider and surgical instrument (US 11,805,976) comes due May 7, 2027. Unpaid by Nov 8, 2027, it lapses early.
- 1 fee due Aug 6, 2027The maintenance fee for Estimation device, estimation method, and program (US 11,890,062) comes due Aug 6, 2027. Unpaid by Feb 7, 2028, it lapses early.
Recent changes
- 9 of the patents on this record were granted 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 8,897,916 | Maneuvering System Having Inner Force Sense Presenting Function In force · Medium confidence | In force | Medium confidence | |
| US 8,700,213 | Maneuvering System Having Inner Force Sense Presenting Function In force · High confidence | In force | High confidence | |
| US 11,207,144 | Motive power transmission adapter and medical manipulator system In force · From the USPTO record | In force | From the USPTO record | |
| US 11,805,976 | Slider and surgical instrument In force · From the USPTO record | In force | From the USPTO record | |
| US 12,023,115 | Medical-robot pneumatic drive mechanism In force · From the USPTO record | In force | From the USPTO record | |
| US 11,723,717 | High-frequency forceps In force · From the USPTO record | In force | From the USPTO record | |
| US 12,355,297 | Surgery assistance device with backup power supply In force · From the USPTO record | In force | From the USPTO record | |
| US 12,324,640 | Medical robot In force · From the USPTO record | In force | From the USPTO record | |
| US 12,011,243 | Force sense display device and force sense display method of medical robot system In force · From the USPTO record | In force | From the USPTO record | |
| US 12,340,710 | Information processing device and assistance system In force · From the USPTO record | In force | From the USPTO record |
Also on record, not counted in the 50: 1 lapsed for an unpaid fee. 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.
20 pending · 2 abandoned · 11 no status recorded