Also listed on Thar Instruments, Inc., an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Aug 12, 2028 · High confidence
20-year base term ended Jul 17, 2026
Held by Waters Technologies Corporation
Filed Jul 17, 2006 as application 11/487,581 · Granted Jun 21, 2011
Base term plus 757 days of patent term adjustment (USPTO delay)
Today
2006
2028
Clock starts
Jul 17, 2006
Jul 17, 2006
Term ends
Aug 12, 2028
Aug 12, 2028
Granted
Jun 21, 2011
Jun 21, 2011
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
757
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.
3
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 757 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 Jul 17, 2006, when this application, 11/487,581, was filed | Jul 17, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +757 days, USPTO patent term adjustment record | Aug 12, 2028 | 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 | Aug 12, 2028 | High confidence |
This family
| US 7,964,029 | this patent Aug 2028 | Aug 2028 |
| Application PCT/US2007/073696 | PCT application no patent term | no patent term |
| US 8,262,760 | Lapsed on the fee record Sep 2024 | Sep 2024 |
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 |
|---|---|---|---|
| Jul 12, 2007 Reel 19550, frame 131 | Thar Instruments, Inc. | National City Bank | Security Agreement |
| Jul 17, 2007 Reel 19568, frame 299 | Fogelman, Kimber D.; Worley, Vincent L.; Sullivan, Peter M. | Thar Instruments, Inc. | Assignment of Assignor's Interest |
| Jun 15, 2009 Reel 22835, frame 147 | National City Bank of Pittsburgh | Thar Instruments, Inc. | Assignment of Assignor's Interest |
| Oct 14, 2010 Reel 25137, frame 232 | Mettler-Toledo Autochem, Inc. | Thar Instruments, Inc. | Assignment of Assignor's Interest |
| Apr 5, 2012 Reel 28002, frame 435 | Mettler-Toledo Autochem, Inc. | Thar Instruments, Inc. | Corrective Assignment to Correct the Assignment Document That Was Executed on 8/26/2010 Previously Recorded on Reel 025137 Frame 0232. Assignor(S) Hereby Confirms the 2007 Executed Assignment Is the Original Assignment of Patent Rights and Replaces the 2010 Assignment Previously Recorded. |
| Apr 10, 2012 Reel 28021, frame 88 | Thar Instruments Inc. | Waters Technologies Corporation | Merger |
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
Aug 2028
Term ends Aug 12, 2028. No further fees fall due before then
Note
The 757 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
18
later US patents cite this one
That is above the median of utility patents granted in 2011 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.