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Method for Erasing Memory Cells in a Flash Memory Device Using a Positive Well Bias Voltage and a Negative Word Line Voltage

US 8,456,922 In force
OverviewFamilyAssignmentsSources & methods

Term ends Dec 14, 2026 · High confidence

Filed May 22, 2012 as application 13/477,431 · Granted Jun 4, 2013
Base term, 20 years from filing
Today
20 years from filing
2006 2026
Clock starts
Dec 14, 2006
Term ends
Dec 14, 2026
Granted
Jun 4, 2013
base term 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
None
Term adjustment
No prosecution delay on this record.
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.
6
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 is its 20-year base term, with no adjustment for 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 Dec 14, 2006, when application 11/610,573, the earliest non-provisional in its chain, was filed (this one was filed May 22, 2012)Dec 14, 2026High 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 events3 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderDec 14, 2026High confidence

This family

US 8,189,396In force
May 2029
May 2029
US 8,456,922this patent
Dec 2026
Dec 2026
US 9,214,233In force
Dec 2026
Dec 2026
US 10,468,109In force
Dec 2026
Dec 2026
US 10,923,194In force
Dec 2026
Dec 2026
US 11,594,281In force
Dec 2026
Dec 2026
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
Mar 13, 2014
Reel 32439, frame 638
MOSAID Technologies IncorporatedConversant Intellectual Property Management Inc.Change of Name
Sep 3, 2014
Reel 33678, frame 96
Conversant Intellectual Property Management Inc.Conversant Intellectual Property Management Inc.Change of Address
Sep 9, 2014
Reel 33706, frame 367
Conversant Intellectual Property Management Inc.Cppib Credit Investments Inc., as Lender; Royal Bank of Canada, as LenderU.S. Patent Security Agreement (for Non-U.S. Grantors)
Sep 9, 2014
reel/frame not recorded
Conversant Intellectual Property Management Inc.Cppib Credit Investments Inc., as LenderU.S. Patent Security Agreement (for Non-U.S. Grantors)
Sep 9, 2014
reel/frame not recorded
Conversant Intellectual Property Management Inc.Royal Bank of Canada, as LenderU.S. Patent Security Agreement (for Non-U.S. Grantors)
Aug 22, 2018
Reel 46900, frame 136
Conversant Intellectual Property Management Inc.Cppib Credit Investments, Inc.Amended and Restated U.S. Patent Security Agreement (for Non-U.S. Grantors)
Oct 12, 2018
Reel 47645, frame 424
Royal Bank of Canada, as LenderConversant Intellectual Property Management Inc.Release of U.S. Patent Agreement (for Non-U.S. Grantors)
Nov 6, 2020
Reel 54344, frame 143
Cppib Credit Investments Inc.Conversant Intellectual Property Management Inc.Release of Security Interest
Oct 19, 2021
Reel 58297, frame 486
Conversant Intellectual Property Inc.MOSAID Technologies IncorporatedChange of Name
Aug 29, 2023
Reel 64746, frame 547
Conversant Intellectual Property Management Inc.MOSAID Technologies IncorporatedCorrective Assignment to Correct the Conveying Party's Name Previously Recorded on Reel 058297 Frame 0486. Assignor(S) Hereby Confirms the Change 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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