Dosilicon Co., Ltd.

9 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

Mar 2034

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 Apr 29, 2027
The maintenance fee for NAND flash memory device having facing bar and method of fabricating the same (US 10,461,091) comes due Apr 29, 2027. Unpaid by Oct 29, 2027, it lapses early.
3 fees due Oct 12 to 26, 2027 · next Oct 12

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 9 of 9

Patent	Title	Status	Expires	Confidence
US 9,087,589	Flash Memory Device Reducing Layout Area In force Term ends Mar 10, 2034 · High confidence	In force	Term ends Mar 10, 2034	High confidence
US 9,312,033	NOR-type flash memory device configured to reduce program malfunction In force Term ends Apr 9, 2034 · From the USPTO record	In force	Term ends Apr 9, 2034	From the USPTO record
US 9,117,539	Flash Memory Device Reducing Noise Peak and Program Time and Programming Method Thereof In force Term ends Jun 12, 2034 · High confidence	In force	Term ends Jun 12, 2034	High confidence
US 9,312,024	Flash memory device having efficient refresh operation In force Term ends Dec 4, 2034 · From the USPTO record	In force	Term ends Dec 4, 2034	From the USPTO record
US 9,324,445	High-voltage switching circuit for flash memory device In force Term ends May 28, 2035 · From the USPTO record	In force	Term ends May 28, 2035	From the USPTO record
US 10,177,153	DRAM cell for reducing layout area and fabricating method thereof In force Term ends Jul 25, 2037 · From the USPTO record	In force	Term ends Jul 25, 2037	From the USPTO record
US 10,461,091	NAND flash memory device having facing bar and method of fabricating the same In force Term ends Dec 31, 2037 · From the USPTO record	In force	Term ends Dec 31, 2037	From the USPTO record
US 10,811,418	DRAM cell array using facing bar and method of fabricating the same In force Term ends Apr 11, 2038 · From the USPTO record	In force	Term ends Apr 11, 2038	From the USPTO record
US 11,049,548	Multi-bank type semiconductor memory device with reduced current consumption in data lines In force Term ends Aug 12, 2040 · From the USPTO record	In force	Term ends Aug 12, 2040	From the USPTO record

Also on record, not counted in the 9: 13 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.