Optoplan As

15 patents currently held · Updated Nov 14, 2026

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

Recorded under 3 name spellings.

Ending by 2030

Nov 2026

Next term end

When these terms end

5 yrs10 yrs20 yrs

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 Nov 26, 2026
The maintenance fee for Split-element optical hydrophone (US 9,042,202) comes due Nov 26, 2026. Unpaid by May 26, 2027, it lapses early.
1 fee due Feb 4, 2027
The maintenance fee for Rotary joint/swivel device (US 9,099,851) comes due Feb 4, 2027. Unpaid by Aug 4, 2027, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

2 terms have 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.

Patent	Title	Status	Expires	Confidence
US 7,510,349	Ocean bottom seismic station installation In force Term ends Nov 20, 2026 · From the USPTO record	In force	Term ends Nov 20, 2026	From the USPTO record
US 7,449,636	Cable bend stiffener In force Term ends Jan 3, 2027 · From the USPTO record	In force	Term ends Jan 3, 2027	From the USPTO record
US 7,715,015	Adaptive mixing for high slew rates In force Term ends Jul 15, 2028 · From the USPTO record	In force	Term ends Jul 15, 2028	From the USPTO record
US 7,916,303	Non-uniform sampling to extend dynamic range of interferometric sensors In force Term ends Feb 9, 2029 · From the USPTO record	In force	Term ends Feb 9, 2029	From the USPTO record
US 8,064,286	Seismic streamer array In force Term ends Mar 26, 2029 · From the USPTO record	In force	Term ends Mar 26, 2029	From the USPTO record
US 9,042,202	Split-element optical hydrophone In force Term ends Dec 22, 2030 · From the USPTO record	In force	Term ends Dec 22, 2030	From the USPTO record
US 9,703,007	Method of producing a seismic streamer cable In force Term ends Mar 28, 2031 · From the USPTO record	In force	Term ends Mar 28, 2031	From the USPTO record
US 8,499,638	Fibre optic accelerometer and a method of manufacturing a fibre optic accelerometer In force Term ends Jan 17, 2032 · From the USPTO record	In force	Term ends Jan 17, 2032	From the USPTO record
US 9,099,851	Rotary joint/swivel device In force Term ends Apr 1, 2032 · From the USPTO record	In force	Term ends Apr 1, 2032	From the USPTO record
US 10,153,626	Subsea cable installation unit In force Term ends Apr 16, 2032 · From the USPTO record	In force	Term ends Apr 16, 2032	From the USPTO record

10 of 15 patents shown.

Pro members see all 15.

Pro members: see all 15 patents

Also on record, not counted in the 15: 49 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.

Export every term end as CSV · Pro

Published applications

Every application published under this name has become a patent.