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US

Process for Producing Detachable Dirt- and Water-Repellent Surface Coatings

US 7,531,598 Term ended
OverviewFamilyAssignmentsSources & methods

Term ended Dec 27, 2024 · High confidence

Filed Jun 13, 2006 as application 11/451,868 · Granted May 12, 2009
Base term plus 375 days of patent term adjustment (USPTO delay)
Today
20 years from filing
Term ended Dec 27, 2024
2003 2026
Clock starts
Dec 18, 2003
Term ended
Dec 27, 2024
Granted
May 12, 2009
base term patent term adjustment after the term ends 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
375
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.
30
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 375 days past its 20-year base term on prosecution delay. All three maintenance fees were paid, so no fee lapse ended it. 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 Dec 18, 2003, when application 10/740,346, the earliest non-provisional in its chain, was filed (this one was filed Jun 13, 2006)Dec 18, 2023High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+375 days, USPTO patent term adjustment recordDec 27, 2024High confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events3 of 3 maintenance fees paidterm endedHigh confidence
Computed term endThe steps above, in orderDec 27, 2024High confidence

This family

US 7,083,828Term ended
Mar 2024
Mar 2024
US 8,034,173In force
no later than Jun 2027
no later than Jun 2027
US 7,828,889In force
Dec 2026
Dec 2026
US 7,531,598this patent
Dec 2024
Dec 2024
Application PCT/US2006/039360PCT application
no patent term
no patent term
US 7,399,738In force
Aug 2027
Aug 2027
US 7,541,323In force
Aug 2027
Aug 2027
US 7,901,731Term ended
no later than Dec 2023
no later than Dec 2023
8 of 30 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
Feb 22, 2010
Reel 24016, frame 789
Goldschmidt GmbHEvonik Goldschmidt GmbHChange of Name
Feb 26, 2014
Reel 32335, frame 326
Evonik Goldschmidt GmbHEvonik Degussa GmbHMerger
Sep 9, 2025
Reel 72195, frame 478
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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