The Patent Finder

CSK Inc.

5 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
Sep 2033
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 30, 2026
    The maintenance fee for Burner for scrubber (US 9,068,742) comes due Dec 30, 2026. Unpaid by Jun 30, 2027, 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 5 of 5

PatentTitleStatus Expires Confidence
US 9,068,742Burner for scrubber
In force
 · From the USPTO record
In forceFrom the USPTO record
US 12,546,470A Scrubber Burner
In force
 · High confidence
In forceHigh confidence
US 12,478,910Apparatus for Collecting Powder in Exhaust Gas Having a Filter Dedusting Function and Exhaust Gas Treatment Equipment Provided with Same
In force
 · High confidence
In forceHigh confidence
US 12,290,778Scrubber, ALD Process System Including the Scrubber and Method for Fabricating Semiconductor Device Using the Scrubber
In force
 · High confidence
In forceHigh confidence
US 12,643,064Apparatus for Collecting Powder in Exhaust Gas with an Increased Collection Capacity and Exhaust Gas Treatment Equipment Provided with Same
In force
 · High confidence
In forceHigh confidence
Also on record, not counted in the 5: 4 lapsed for an unpaid fee · 30 ended at full term. List them

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

US patent applications published under this name that have not become patents. An application is published about eighteen months after its earliest filing; one that has not been published is in no public record.

6 no status recorded

List them

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