The Patent Finder
US

Rubber balers

US RE50,443 In force
OverviewSources & methods

Term ends Jul 22, 2036 · From the USPTO record

Reissue of US 10,807,338, which was surrendered when this reissue was granted; its term and maintenance fees continue here.

Named at grant Karltex Machine, Inc. · find this owner
Filed Apr 29, 2022 as application 17/732,870 · Granted May 27, 2025
Base term plus 199 days of patent term adjustment (USPTO delay)
Today
20 years from filing
2016 2036
Clock starts
Jan 5, 2016
Term ends
Jul 22, 2036
Granted
May 27, 2025
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 original patent's USPTO patent term adjustment record, which governs a reissue. Not recalculated here.
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 the original patent's grant (Oct 20, 2020). This counts the ones the record shows paid.

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.
Step Input Date after this step Confidence
Base term, 20 years from filingClock starts Jan 5, 2016, when the earliest non-provisional application in its chain was filed (this one was filed Apr 29, 2022)Jan 5, 2036High confidence
Continuity chainA reissue: its term follows the original patent's, with the original's term adjustmentfollows the original patentMedium confidence
Patent term adjustment+199 days, the original patent's USPTO patent term adjustment record, which governs a reissue (35 U.S.C. 251)Jul 22, 2036High confidence
Terminal disclaimer capNone on recordno cap appliedHigh confidence
Patent term extensionNone on fileno changeHigh confidence
Fee events1 of 3 maintenance fees paidIn forceHigh confidence
Computed term endThe steps above, in orderJul 22, 2036From the USPTO record

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.

Not on this page: the patent's family, its recorded assignments and its citation count. USPTO's assignment records, linked above, list every recorded assignment.

Every date shows its work: the base term, any term adjustment or extension, any disclaimer cap, and the maintenance fee record, each with a confidence tier. How this record was built

Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.

In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.

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