Cysay Inc.

8 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 QUARRYMEN & Co. Inc. (to 2023)

Ending by 2030

Mar 2033

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 Jun 3, 2027
The maintenance fee for Immortalized stem cell, compositions, preparations and uses thereof (US 10,494,606) comes due Jun 3, 2027. Unpaid by Dec 3, 2027, it lapses early.
1 fee due Nov 5, 2027
The maintenance fee for Method of making conditioned medium from immortalized dental pulp stem cells (US 10,639,355) comes due Nov 5, 2027. Unpaid by May 5, 2028, 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 8 of 8

Patent	Title	Status	Expires	Confidence
US 10,494,606	Immortalized stem cell, compositions, preparations and uses thereof In force Term ends Mar 28, 2033 · From the USPTO record	In force	Term ends Mar 28, 2033	From the USPTO record
US 10,639,355	Method of making conditioned medium from immortalized dental pulp stem cells In force Term ends Jan 23, 2035 · From the USPTO record	In force	Term ends Jan 23, 2035	From the USPTO record
US 10,918,726	Carbosilane dendrimer and aggregatable carrier obtained using said dendrimer for drug delivery system In force Term ends Nov 30, 2035 · From the USPTO record	In force	Term ends Nov 30, 2035	From the USPTO record
US 10,668,261	Sheet-like piece, sheet for promoting hair growth comprising sheet-like piece, and whitening and wrinkle ameliorating agent comprising sheet-like piece In force Term ends Aug 16, 2036 · From the USPTO record	In force	Term ends Aug 16, 2036	From the USPTO record
US 11,015,171	Immortalized stem cells and method for producing same In force Ends no later than Nov 7, 2036 · From the USPTO record	In force	Ends no later than Nov 7, 2036	From the USPTO record
US 10,772,973	Targeted shell for use in drug delivery system utilizing carbosilane dendrimer In force Term ends Dec 3, 2036 · From the USPTO record	In force	Term ends Dec 3, 2036	From the USPTO record
US 11,160,877	Capsule for drug delivery systems of targeted tissue-specific delivery type using carbosilane dendrimer In force Ends no later than May 26, 2037 · From the USPTO record	In force	Ends no later than May 26, 2037	From the USPTO record
US 11,510,987	Endocytosis Enhancer for Drug Delivery System In force Ends no later than Dec 1, 2037 · Medium confidence	In force	Ends no later than Dec 1, 2037	Medium confidence

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

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.

2 pending

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