Csignum Ltd.

8 patents currently held · Updated Nov 14, 2026

Held is read from USPTO's recorded assignments; a transfer never recorded there does not appear.

Ending by 2030

Jul 2027

Next term end

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

20262027202820292030203120322033203420352036203720382039204020412042204320442045

Fee deadlines

No maintenance fee falls due on this company's record before Nov 14, 2027.

Recent changes

1 term has ended since Aug 16, 2026

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 8 of 8

Patent	Title	Status	Expires	Confidence
US 8,305,227	Wireless auxiliary monitoring and control system for an underwater installation In force Term ends Jul 24, 2027 · From the USPTO record	In force	Term ends Jul 24, 2027	From the USPTO record
US 7,742,007	Transmission of underwater electromagnetic radiation through the seabed In force Term ends Dec 14, 2027 · From the USPTO record	In force	Term ends Dec 14, 2027	From the USPTO record
US 7,711,322	Underwater communications system and method In force Term ends Mar 4, 2029 · From the USPTO record	In force	Term ends Mar 4, 2029	From the USPTO record
US 8,326,220	Underwater data transfer system In force Term ends Jan 21, 2030 · From the USPTO record	In force	Term ends Jan 21, 2030	From the USPTO record
US 10,945,211	Underwater power saving mechanism for use in an communication network In force Term ends Jul 4, 2034 · From the USPTO record	In force	Term ends Jul 4, 2034	From the USPTO record
US 11,125,062	Flow monitoring system In force Term ends Mar 23, 2038 · From the USPTO record	In force	Term ends Mar 23, 2038	From the USPTO record
US 12,072,430	Underwater navigation In force Term ends Mar 25, 2041 · From the USPTO record	In force	Term ends Mar 25, 2041	From the USPTO record
US 8,515,343	Water based vehicle communications system In force Term ended Sep 30, 2026 · From the USPTO record	In force	Term ended Sep 30, 2026	From the USPTO record

Also on record, not counted in the 8: 4 lapsed for an unpaid fee · 15 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.

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Published applications

Every application published under this name has become a patent.