The Patent Finder

Rikksen

6 patents currently held · Updated Nov 14, 2026
Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.
0
Ending by 2030
Jul 2037
Next term end

When these terms end

Held patents by the year their term ends
20262027202820292030203120322033203420352036203720382039204020412042204320442045

Fee deadlines

Maintenance fees fall due 3.5, 7.5 and 11.5 years after grant. A missed fee ends a patent at the end of the six month grace period that follows, not on the due date.
  • 1 fee due Dec 13, 2026
    The maintenance fee for Sealing Device for Construction, and Associated Manufacturing Method (US 11,674,315) comes due Dec 13, 2026. Unpaid by Jun 14, 2027, it lapses early.
  • 1 fee due Sep 5, 2027
    The maintenance fee for Drainage device equipped with an attachment sleeve for construction, particularly a building roof or a terrace (US 11,920,350) comes due Sep 5, 2027. Unpaid by Mar 6, 2028, it lapses early.
  • 1 fee due Oct 9, 2027
    The maintenance fee for Drainage Device for a Construction, in Particular a Roof of a Building or a Terrace (US 11,952,780) comes due Oct 9, 2027. Unpaid by Apr 10, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

Nothing was recorded against this company's patents in the last 90 days.

Patents held now

Soonest term end first. Each date below is computed on that patent's own page, which shows the rule, the adjustments and the fee history it was derived from.

Showing 1 to 6 of 6

PatentTitleStatus Expires Confidence
US 10,858,835Sealing ring and assembly of ducts including said ring
In force
 · From the USPTO record
In forceFrom the USPTO record
US 11,248,378Sealing Device for Construction, Comprising a Duct and Connection Member
In force
 · High confidence
In forceHigh confidence
US 11,480,269Device for sealing between two coaxial ducts and assembly
In force
 · From the USPTO record
In forceFrom the USPTO record
US 11,952,780Drainage Device for a Construction, in Particular a Roof of a Building or a Terrace
In force
 · High confidence
In forceHigh confidence
US 11,674,315Sealing Device for Construction, and Associated Manufacturing Method
In force
 · High confidence
In forceHigh confidence
US 11,920,350Drainage device equipped with an attachment sleeve for construction, particularly a building roof or a terrace
In force
 · From the USPTO record
In forceFrom the USPTO record

Sources and methods

Compiled from the USPTO record, grants, published applications and recorded assignments, not yet reviewed by hand. How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.

Published applications

Every application published under this name has become a patent.

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