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Power Distribution for Inkjet Printheads

US 6,938,989 Lapsed on the fee record
OverviewFamilyAssignmentsSources & methods

Lapsed Sep 6, 2013 on the fee record · High confidence

Second maintenance fee unpaid; grace period ended.

Filed Apr 16, 2001 as application 09/835,711 · Granted Sep 6, 2005
Base term, 20 years from filing
Today
Lapsed Sep 6, 2013
1999 2026
Clock starts
Oct 15, 1999
No longer in force
Sep 6, 2013
Granted
Sep 6, 2005
Term would have run to
Oct 15, 2019
base term 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
None
Term adjustment
No prosecution delay on this record.
None
Terminal disclaimer
No disclaimer on this record.
1 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.
1,425
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.

Its term would have run to Oct 15, 2019: its 20-year base term, with no adjustment for prosecution delay. 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 Oct 15, 1999, when application PCT/AU1999/000894, the earliest non-provisional in its chain, was filed (this one was filed Apr 16, 2001)Oct 15, 2019High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustmentNone on fileno changeHigh confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events1 of 3 maintenance fees paidlapsed Sep 6, 2013High confidence
Computed term endThe steps above, in orderSep 6, 2013High confidence

This family

US 6,464,340Term ended
Aug 2018
Aug 2018
US 6,918,655Lapsed on the fee record
Jul 2017
Jul 2017
US 6,938,989this patent
Sep 2013
Sep 2013
US 6,742,873Lapsed on the fee record
Jun 2016
Jun 2016
US 6,923,526Lapsed on the fee record
Aug 2017
Aug 2017
US 6,588,882Lapsed on the fee record
Jul 2015
Jul 2015
US 6,505,912Term ended
no later than Jul 2018
no later than Jul 2018
US 6,485,123Lapsed on the fee record
Nov 2014
Nov 2014
8 of 1425 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
Sep 10, 2001
Reel 12151, frame 712
Silverbrook, KiaSilverbrook Research Pty Ltd.Assignment of Assignor's Interest
Apr 1, 2005
Reel 17029, frame 931
Silverbrook, KiaSilverbrook Research Pty Ltd.Assignment of Assignor's Interest
Jul 12, 2012
Reel 28539, frame 535
Silverbrook Research Pty. Limited and Clamate Pty LimitedZamtec LimitedAssignment 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.

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