The Patent Finder
US

Control of Light Intensity Using Pulses of a Fixed Duration and Frequency

US 7,598,683 In force
OverviewFamilyAssignmentsSources & methods
Collateral for a security interest recorded Oct 2, 2026 (National Bank of Canada).

Term ends Feb 15, 2028 · High confidence

Filed Jul 31, 2007 as application 11/882,323 · Granted Oct 6, 2009
Base term plus 199 days of patent term adjustment (USPTO delay)
Today
20 years from filing
2007 2028
Clock starts
Jul 31, 2007
Term ends
Feb 15, 2028
Granted
Oct 6, 2009
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
199
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.
7
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 199 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 Jul 31, 2007, when this application, 11/882,323, was filedJul 31, 2027High confidence
Continuity chainEvery parent in the chain resolvedno changeHigh confidence
Patent term adjustment+199 days, USPTO patent term adjustment recordFeb 15, 2028High 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 orderFeb 15, 2028High confidence

This family

US 7,598,683this patent
Feb 2028
Feb 2028
US 8,421,368In force
Aug 2027
Aug 2027
US 8,903,577In force
Nov 2031
Nov 2031
US 8,604,709In force
Feb 2028
Feb 2028
Application PCT/US2010/053653PCT application
no patent term
no patent term
Application PCT/US2011/029170PCT application
no patent term
no patent term
Application 14/517,354Abandoned
not computed
not computed
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 26, 2008
Reel 20706, frame 797
Jalbout, Bassam D., MR.LSI IndustriesCorrective Assignment to Correct the Serial Nos. 11/822,322 11/822,323 Which Were Incorrectly Listed on Cover Sheet Previously Recorded on Reel 020145 Frame 0736. Assignor(S) Hereby Confirms the Assignment.
May 14, 2009
Reel 22682, frame 442
Jalbout, Bassam D.LSI Industries, Inc.Assignment of Assignor's Interest
Jun 29, 2009
Reel 22887, frame 9
Wong, BrianLSI Industries, Inc.Assignment of Assignor's Interest
Sep 30, 2014
Reel 33846, frame 611
LSI Industries Inc.LSI Saco Technologies Inc.Assignment of Assignor's Interest
Jul 30, 2015
Reel 36225, frame 927
LSI Saco Technologies Inc.Saco Technologies Inc.Change of Name
Oct 2, 2026
Reel 76628, frame 211
Saco Technologies Inc.National Bank of CanadaConfirmatory Security Agreement

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.

The Patent Finder CompaniesExpirationsCalculatorWatchlistPricing MethodologyCorrectionsLegalPrivacysupport@thepatentfinder.com Updated Nov 14, 2026 · includes USPTO assignment & status data published Nov 14, 2026 and grant & fee data published Nov 10, 2026 (weekly) Part of 137 Finder · © 2026 137 Finder LLC · Sources cited