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Method for the continuous production of alkyl(meth)acrylates with multiple catalyst recycling

US 8,461,375 In force
OverviewFamilyAssignmentsSources & methods

Also listed on Rohm GmbH, an earlier holder on the record. The recorded assignments below show how it moved.

Term ends Nov 11, 2027 · High confidence

Filed Apr 10, 2006 as application 10/541,307 · Granted Jun 11, 2013
Base term plus 1451 days of patent term adjustment (USPTO delay)
Today
20 years from filing
2003 2027
Clock starts
Nov 21, 2003
Term ends
Nov 11, 2027
Granted
Jun 11, 2013
base term patent term adjustment fee events Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
1,451
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 1451 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.
StepInputDate after this stepConfidence
Base term, 20 years from filingClock starts Nov 21, 2003, when application PCT/EP2003/013060, the earliest non-provisional in its chain, was filed (this one was filed Apr 10, 2006)Nov 21, 2023High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+1451 days, USPTO patent term adjustment recordNov 11, 2027High confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events3 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderNov 11, 2027High confidence

This family

US 8,461,375this patent
Nov 2027
Nov 2027
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.
RecordedAssignorAssigneeConveyance
Apr 10, 2006
Reel 17768, frame 660
Ackermann, Jochen; Hiltner, Horst; Siegert, HermannRoehm GmbH & Co. KGAssignment of Assignor's Interest
Feb 25, 2010
Reel 23998, frame 760
Rohm GmbH & Co. KGRohm GmbHChange of Entity
Feb 25, 2010
Reel 23998, frame 789
Rohm GmbHEvonik Rohm GmbHChange of Name
Mar 20, 2020
Reel 52195, frame 1
Evonik Oil Additives GmbHEvonik Degussa GmbHMerger
Mar 20, 2020
Reel 52194, frame 462
Evonik Röhm GmbHRöhm GmbHChange of Name
Mar 20, 2020
Reel 52194, frame 550
Röhm GmbHEvonik Oil Additives GmbHAssignment of Assignor's Interest
Mar 20, 2020
Reel 52195, frame 226
Evonik Degussa GmbHEvonik Operations GmbHChange of Name

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.

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