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US

Micropulse Bipolar Corona Ionizer and Method

US 8,885,317 In force
OverviewFamilyAssignmentsSources & methods

Term ends Nov 13, 2032 · High confidence

Filed Feb 8, 2011 as application 13/023,397 · Granted Nov 11, 2014
Base term plus 644 days of patent term adjustment (USPTO delay)
Today
20 years from filing
2011 2032
Clock starts
Feb 8, 2011
Term ends
Nov 13, 2032
Granted
Nov 11, 2014
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
644
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.
13
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 644 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 Feb 8, 2011, when this application, 13/023,397, was filedFeb 8, 2031High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+644 days, USPTO patent term adjustment recordNov 13, 2032High 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 13, 2032High confidence

This family

US 8,009,405In force
Nov 2029
Nov 2029
Application PCT/US2008/057262PCT application
no patent term
no patent term
US 8,885,317this patent
Nov 2032
Nov 2032
US 8,605,407In force
Mar 2028
Mar 2028
US 8,773,837In force
Mar 2028
Mar 2028
Application PCT/US2012/024095PCT application
no patent term
no patent term
Application PCT/US2012/064045PCT application
no patent term
no patent term
US D743,017In force
Nov 2029
Nov 2029
8 of 13 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 8, 2011
Reel 25902, frame 644
Partridge, Leslie WayneIllinois Tool Works Inc.Assignment 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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