Bi-Mirth Corp.

10 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 2031

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 Feb 1, 2027
The maintenance fee for Fast chip removal reaming screw (US 11,713,779) comes due Feb 1, 2027. Unpaid by Aug 2, 2027, it lapses early.
1 fee due Mar 29, 2027
The maintenance fee for Anti-split wood screw (US 9,145,911) comes due Mar 29, 2027. Unpaid by Sep 29, 2027, it lapses early.
1 fee due May 19, 2027
The maintenance fee for Self-tapping screw head structure (US 10,480,562) comes due May 19, 2027. Unpaid by Nov 19, 2027, 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 10 of 10

Patent	Title	Status	Expires	Confidence
US 8,348,571	Screw In force Term ends Mar 24, 2031 · From the USPTO record	In force	Term ends Mar 24, 2031	From the USPTO record
US 9,145,911	Anti-split wood screw In force Term ends Oct 19, 2033 · From the USPTO record	In force	Term ends Oct 19, 2033	From the USPTO record
US 9,850,935	Hole expanding screw In force Term ends Apr 14, 2036 · From the USPTO record	In force	Term ends Apr 14, 2036	From the USPTO record
US 9,970,470	Flooring screw In force Term ends Jul 28, 2036 · From the USPTO record	In force	Term ends Jul 28, 2036	From the USPTO record
US 10,480,562	Self-tapping screw head structure In force Term ends Jun 8, 2038 · From the USPTO record	In force	Term ends Jun 8, 2038	From the USPTO record
US 11,371,546	Self-drilling screw structure In force Term ends Sep 8, 2040 · From the USPTO record	In force	Term ends Sep 8, 2040	From the USPTO record
US 11,371,547	Wood screw structure In force Term ends Sep 21, 2040 · From the USPTO record	In force	Term ends Sep 21, 2040	From the USPTO record
US 11,598,363	Low-wear screw structure In force Term ends Sep 9, 2041 · From the USPTO record	In force	Term ends Sep 9, 2041	From the USPTO record
US 11,713,779	Fast chip removal reaming screw In force Term ends Oct 8, 2041 · From the USPTO record	In force	Term ends Oct 8, 2041	From the USPTO record
US 12,276,296	Self-drilling screw structure and manufacturing method thereof In force Term ends Jul 7, 2043 · From the USPTO record	In force	Term ends Jul 7, 2043	From the USPTO record

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.