Hitachi, Ltd.
2,947 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.
419
Ending by 2030
Nov 2026
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.
- 12 fees due Nov 19 to 30, 2026 · next Nov 19
- 58 fees due Dec 2 to 30, 2026 · next Dec 2
- 57 fees due Jan 2 to 30, 2027 · next Jan 2
- 42 fees due Feb 1 to 28, 2027 · next Feb 1
- 65 fees due Mar 1 to 29, 2027 · next Mar 1
- 85 fees due Apr 1 to 30, 2027 · next Apr 1
- 48 fees due May 3 to 28, 2027 · next May 3
- 68 fees due Jun 1 to 30, 2027 · next Jun 1
- 42 fees due Jul 2 to 30, 2027 · next Jul 2
- 55 fees due Aug 2 to 27, 2027 · next Aug 2
- 66 fees due Sep 1 to 30, 2027 · next Sep 1
- 62 fees due Oct 5 to 30, 2027 · next Oct 5
- 22 fees due Nov 3 to 12, 2027 · next Nov 3
Recent changes
- 73 of the patents on this record were granted since Aug 16, 2026
- 160 terms have ended 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 7,439,933 | Signal processing circuit, and non-contact IC card and tag with the use thereof In force · From the USPTO record | In force | From the USPTO record | |
| US 7,587,430 | Backup system for data base In force · From the USPTO record | In force | From the USPTO record | |
| US 7,518,490 | Method and system of monitoring around a vehicle In force · From the USPTO record | In force | From the USPTO record | |
| US 7,646,610 | Dc-Dc Converter In force · High confidence | In force | High confidence | |
| US 7,659,047 | Materials for photoresist, negative-tone photoresist composition, method of forming resist pattern, and semiconductor device In force · From the USPTO record | In force | From the USPTO record | |
| US 7,626,471 | Non-Reciprocal Circuit Device In force · High confidence | In force | High confidence | |
| US 7,737,801 | Non-Reciprocal Circuit Device In force · High confidence | In force | High confidence | |
| US 7,381,979 | Rotating irradiation apparatus In force · From the USPTO record | In force | From the USPTO record | |
| US 7,394,082 | Ion Beam Delivery Equipment and an Ion Beam Delivery Method In force · High confidence | In force | High confidence | |
| US 7,537,698 | Process and equipment for treating ammonium containing liquid In force · From the USPTO record | In force | From the USPTO record |
Also on record, not counted in the 3,450: 2,947 patents in force now held by others · 17,148 lapsed for an unpaid fee · 27,060 ended at full term · 15 past the fee grace period · 37 surrendered on reissue. 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.
354 pending · 751 abandoned · 4,504 no status recorded