Ramxeed Limited

28 patents currently held · Updated Nov 14, 2026

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

Previously recorded as Fujitsu Semiconductor Memory Solution Limited (to 2025)

Ending by 2030

May 2027

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 Jan 23, 2027
The maintenance fee for Semiconductor Memory Having Radio Communication Function and Application Control Method (US 10,360,415) comes due Jan 23, 2027. Unpaid by Jul 23, 2027, it lapses early.
1 fee due Apr 1, 2027
The maintenance fee for Rectifier Circuit and Electronic Device (US 10,432,107) comes due Apr 1, 2027. Unpaid by Oct 1, 2027, it lapses early.
1 fee due May 17, 2027
The maintenance fee for Ferroelectric Memory Device (US 9,190,136) comes due May 17, 2027. Unpaid by Nov 17, 2027, it lapses early.
1 fee due Jul 16, 2027
The maintenance fee for Receiver, system, and operation method of receiver (US 11,876,500) comes due Jul 16, 2027. Unpaid by Jan 18, 2028, it lapses early.

Which patents, and when each one lapses · Pro

Recent changes

1 of the patents on this record was granted 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 8,064,241	Semiconductor Memory Including Voltage Detection Circuit for Generating Sense Amplifier Signal In force Term ends May 18, 2027 · High confidence	In force	Term ends May 18, 2027	High confidence
US 7,829,476	Method of Manufacturing Semiconductor Device and Semiconductor Device In force Term ends Mar 12, 2029 · High confidence	In force	Term ends Mar 12, 2029	High confidence
US 7,952,371	Integrated Circuit Device Having Ground Open Detection Circuit In force Term ends Apr 21, 2030 · High confidence	In force	Term ends Apr 21, 2030	High confidence
US 8,264,064	Semiconductor Device In force Term ends Jul 16, 2030 · High confidence	In force	Term ends Jul 16, 2030	High confidence
US 8,503,247	Semiconductor Storage Apparatus, and Method and System for Boosting Word Lines In force Term ends Jul 16, 2031 · High confidence	In force	Term ends Jul 16, 2031	High confidence
US 9,024,410	Semiconductor Device and Method of Manufacturing Semiconductor Device In force Term ends Sep 7, 2032 · High confidence	In force	Term ends Sep 7, 2032	High confidence
US 9,349,685	Semiconductor Device and Method of Manufacturing Semiconductor Device In force Term ends Sep 7, 2032 · High confidence	In force	Term ends Sep 7, 2032	High confidence
US 9,455,258	Semiconductor Device and Method of Designing the Same In force Term ends Aug 17, 2034 · High confidence	In force	Term ends Aug 17, 2034	High confidence
US 9,401,192	Semiconductor Memory Device In force Term ends Sep 5, 2034 · High confidence	In force	Term ends Sep 5, 2034	High confidence
US 9,190,136	Ferroelectric Memory Device In force Term ends Sep 12, 2034 · High confidence	In force	Term ends Sep 12, 2034	High confidence

10 of 28 patents shown.

Pro members see all 28.

Pro members: see all 28 patents

Also on record, not counted in the 28: 1 lapsed for an unpaid fee. 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