The Patent Finder
US

Self-Filling Graduated Cylinder System

US 9,476,748 Lapsed on the fee record
OverviewFamilyAssignmentsSources & methods

Lapsed Oct 25, 2020 on the fee record · High confidence

First maintenance fee unpaid; grace period ended.

Filed Apr 26, 2016 as application 15/139,036 · Granted Oct 25, 2016
Base term, 20 years from filing
Today
Lapsed Oct 25, 2020
2016 2036
Clock starts
Apr 26, 2016
No longer in force
Oct 25, 2020
Granted
Oct 25, 2016
Term would have run to
Apr 26, 2036
base term after the term ends 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.
0 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.
4
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 Apr 26, 2036: 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 Apr 26, 2016, when this application, 15/139,036, was filedApr 26, 2036High 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 events0 of 3 maintenance fees paidlapsed Oct 25, 2020High confidence
Computed term endThe steps above, in orderOct 25, 2020High confidence

This family

US 9,476,748this patent
Oct 2020
Oct 2020
US 10,151,614In force
Apr 2036
Apr 2036
US 10,488,244In force
Apr 2036
Apr 2036
3 of 4 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
Apr 26, 2016
Reel 38387, frame 430
Krause, David R.; Smith, Kenneth R.Cleaning Systems, Inc.Assignment of Assignor's Interest
Oct 2, 2020
Reel 53963, frame 78
Cleaning Systems, LLC; Transclean, LLCAntares Capital LP, as Administrative AgentSecurity Interest
Nov 5, 2020
Reel 54332, frame 857
Cleaning Systems, Inc.Cleaning Systems, LLCCertificate of Conversion
Jan 8, 2021
reel/frame not recorded
Antares Capital LP, as Administrative AgentTransclean, LLCPatent Release and Reassignment of R/F 053963/0078
Jan 8, 2021
reel/frame not recorded
Antares Capital LP, as Administrative AgentCleaning Systems, LLCPatent Release and Reassignment of R/F 053963/0078
Jan 8, 2021
Reel 54927, frame 921
Antares Capital LP, as Administrative AgentTransclean, LLC; Cleaning Systems, LLCPatent Release and Reassignment of R/F 053963/0078

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