Term ends Jul 8, 2032 · High confidence
20-year base term ends Sep 1, 2029
Held by Explo Engineering AG, Rüegg, Hans, Martin GmbH Für Umwelt- und Energietechnik and Hitachi Zosen Inova AG
Filed Mar 25, 2011 as application 13/061,978 · Granted Mar 10, 2015
Base term plus 1041 days of patent term adjustment (USPTO delay)
Today
2009
2032
Clock starts
Sep 1, 2009
Sep 1, 2009
Term ends
Jul 8, 2032
Jul 8, 2032
Granted
Mar 10, 2015
Mar 10, 2015
base term
patent term adjustment
fee events
Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
1,041
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
3 of 3
Maintenance fees paid
Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. This counts the ones the record shows paid.
2
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
This patent's term runs 1041 days past its 20-year base term on prosecution delay. All three maintenance fees are recorded paid; no more fees are due. Confidence: High. from the record
How we calculated this date
One row per rule, each showing its own input and what it did to the date. A step we could not verify says so instead of resolving itself.
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Sep 1, 2009, when application PCT/CH2009/000294, the earliest non-provisional in its chain, was filed (this one was filed Mar 25, 2011) | Sep 1, 2029 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +1041 days, USPTO patent term adjustment record | Jul 8, 2032 | High confidence |
| Terminal disclaimer cap | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 3 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Jul 8, 2032 | High confidence |
This family
| US 8,973,362 | this patent Jul 2032 | Jul 2032 |
1 of 2 applications in this family shown, earliest filings first. The applications whose file history this site holds. The family may have others.
Assignments
Assignment documents as recorded at the USPTO, oldest first, with the reel and frame each was recorded at. A recorded assignment is a filed document, not a statement of current ownership, and the absence of a later one is not evidence that the last one still stands.
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| Mar 25, 2011 Reel 26020, frame 384 | Ruegg, Hans | Explo Engineering GmbH | Assignment of Assignor's Interest |
| Apr 29, 2015 Reel 35532, frame 826 | Explo Engineering GmbH | Explo Engineering AG | Change of Name |
| Oct 13, 2015 Reel 36778, frame 806 | Explo Engineering AG | Explo Engineering AG; Rüegg, Hans; Martin GmbH Für Umwelt- und Energietechnik; Hitachi Zosen Inova AG | Assignment of Assignor's Interest |
| Oct 13, 2015 reel/frame not recorded | Explo Engineering AG | Explo Engineering AG | Assignment of Assignor's Interest |
| Oct 13, 2015 reel/frame not recorded | Explo Engineering AG | Rüegg, Hans | Assignment of Assignor's Interest |
| Oct 13, 2015 reel/frame not recorded | Explo Engineering AG | Martin GmbH Für Umwelt- und Energietechnik | Assignment of Assignor's Interest |
| Oct 13, 2015 reel/frame not recorded | Explo Engineering AG | Hitachi Zosen Inova AG | Assignment of Assignor's Interest |
| Apr 20, 2016 Reel 38481, frame 795 | Explo Engineering GmbH; Explosion Power GmbH; Hans Rüegg; Martin GmbH Für Umwelt- und Energietechnik | Hitachi Zosen Inova AG | License |
Sources
Google Patents · The patent document at USPTO · Assignment records at USPTO
USPTO account required: This application in Patent Center · USPTO's maintenance fee lookup
Maintenance fee events come from USPTO's own fee records. Its fee lookup asks for the patent number and the application number.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Jul 2032
Term ends Jul 8, 2032. No further fees fall due before then
Note
The 1041 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
3
later US patents cite this one
That is below the median of utility patents granted in 2015 in our data, the only group it is compared against.
How we rank
Every date shows its work: the base term, any term adjustment or extension, any disclaimer cap, and the maintenance fee record, each with a confidence tier. How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.