Also listed on Graco Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Sep 25, 2033 · High confidence
20-year base term ends Mar 11, 2033
Filed Mar 11, 2013 as application 13/794,242 · Granted Jun 23, 2015
Base term plus 198 days of patent term adjustment (USPTO delay)
Today
2013
2033
Clock starts
Mar 11, 2013
Mar 11, 2013
Term ends
Sep 25, 2033
Sep 25, 2033
Granted
Jun 23, 2015
Jun 23, 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
198
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
2 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.
4
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 198 days past its 20-year base term on prosecution delay. 2 of 3 maintenance fees are paid so far. 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 Mar 11, 2013, when this application, 13/794,242, was filed | Mar 11, 2033 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +198 days, USPTO patent term adjustment record | Sep 25, 2033 | 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 | 2 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Sep 25, 2033 | High confidence |
This family
| US 9,062,536 | this patent Sep 2033 | Sep 2033 |
| Application PCT/US2013/077508 | PCT application no patent term | no patent term |
| US 10,029,291 | In force Jun 2033 | Jun 2033 |
| US 10,144,043 | In force Jun 2033 | Jun 2033 |
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 11, 2013 Reel 29966, frame 304 | Fischer, David A.; Mioduszewski, David | Q.E.D. Environmental Systems, Inc. | Assignment of Assignor's Interest |
| Mar 13, 2014 Reel 32427, frame 766 | Q.E.D. Environmental Systems, Inc. | Graco Minnesota Inc. | Assignment of Assignor's Interest |
| Jun 22, 2015 Reel 35877, frame 759 | Graco Minnesota Inc. | Q.E.D. Environmental Systems, Inc. | Assignment of Assignor's Interest |
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.
What's changing
Sep 2033
Term ends Sep 25, 2033. Maintenance fees still fall due before then
Note
The 198 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
74
later US patents cite this one
That is top 10% 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.