Nikkiso Co., Ltd.
50 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.
6
Ending by 2030
Aug 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.
- 2 fees due Nov 28 to 30, 2026 · next Nov 28
- 7 fees due Dec 4 to 18, 2026 · next Dec 4
- 2 fees due Jan 4 to 18, 2027 · next Jan 4
- 1 fee due Feb 15, 2027The maintenance fee for Canned motor and canned motor manufacturing method (US 11,728,701) comes due Feb 15, 2027. Unpaid by Aug 16, 2027, it lapses early.
- 5 fees due Mar 3 to 26, 2027 · next Mar 3
- 5 fees due Apr 3 to 24, 2027 · next Apr 3
- 5 fees due May 12 to 24, 2027 · next May 12
- 7 fees due Jun 5 to 30, 2027 · next Jun 5
- 4 fees due Jul 9 to 16, 2027 · next Jul 9
- 4 fees due Aug 13 to 27, 2027 · next Aug 13
- 7 fees due Sep 3 to 30, 2027 · next Sep 3
- 10 fees due Oct 2 to 30, 2027 · next Oct 2
- 1 fee due Nov 14, 2027The maintenance fee for Air trap chamber and extracorporeal circulation circuit (US 11,980,706) comes due Nov 14, 2027. Unpaid by May 15, 2028, it lapses early.
Recent changes
- 5 of the patents on this record were 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 7,537,688 | Blood purification device In force · From the USPTO record | In force | From the USPTO record | |
| US 7,537,687 | Hemodialysis device In force · From the USPTO record | In force | From the USPTO record | |
| US 7,618,531 | Hemodialysis treatment apparatus and method for hemodialysis treatment In force · From the USPTO record | In force | From the USPTO record | |
| US 8,328,749 | Blood purification apparatus and method for calculating a recirculation rate for the blood purification apparatus In force · From the USPTO record | In force | From the USPTO record | |
| US 8,541,538 | Adsorbent for the removal of blood cells In force · From the USPTO record | In force | From the USPTO record | |
| US 7,931,610 | Blood purification apparatus In force · From the USPTO record | In force | From the USPTO record | |
| US 8,858,487 | Blood purification apparatus and priming method thereof In force · From the USPTO record | In force | From the USPTO record | |
| US 8,900,173 | Blood purification apparatus In force · From the USPTO record | In force | From the USPTO record | |
| US 8,945,037 | Blood purification apparatus In force · From the USPTO record | In force | From the USPTO record | |
| US 8,343,085 | Blood purification apparatus and priming method thereof In force · From the USPTO record | In force | From the USPTO record |
Also on record, not counted in the 256: 50 patents in force now held by others · 27 lapsed for an unpaid fee · 91 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.
44 pending · 11 abandoned · 49 no status recorded