Razor Edge Systems, Inc.

9 patents currently held · Updated Nov 15, 2026

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

Ending by 2030

Jul 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 Mar 3, 2027
The maintenance fee for Protected blade edge knife sharpening apparatus (US 10,399,208) comes due Mar 3, 2027. Unpaid by Sep 3, 2027, it lapses early.
1 fee due Sep 12, 2027
The maintenance fee for Two-way protective respirator system with positive air flow against airborne contaminant particles and vapor components (US 11,925,820) comes due Sep 12, 2027. Unpaid by Mar 13, 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 9 of 9

Patent	Title	Status	Expires	Confidence
US D686,895	Scissors sharpener In force Term ends Jul 30, 2027 · From the USPTO record	In force	Term ends Jul 30, 2027	From the USPTO record
US D807,140	Scissors sharpening device In force Term ends Jan 9, 2033 · From the USPTO record	In force	Term ends Jan 9, 2033	From the USPTO record
US D807,141	Scissors sharpening device In force Term ends Jan 9, 2033 · From the USPTO record	In force	Term ends Jan 9, 2033	From the USPTO record
US 9,902,047	Sharpening apparatus for scissors In force Term ends Oct 18, 2035 · From the USPTO record	In force	Term ends Oct 18, 2035	From the USPTO record
US 10,399,208	Protected blade edge knife sharpening apparatus In force Term ends Aug 5, 2037 · From the USPTO record	In force	Term ends Aug 5, 2037	From the USPTO record
US 10,661,406	Robotic hand tool sharpening and cleaning apparatus In force Term ends Mar 18, 2038 · From the USPTO record	In force	Term ends Mar 18, 2038	From the USPTO record
US 11,474,014	Hand tool edge tester In force Term ends Nov 20, 2038 · From the USPTO record	In force	Term ends Nov 20, 2038	From the USPTO record
US 11,092,527	Hand tool edge tester In force Term ends May 7, 2039 · From the USPTO record	In force	Term ends May 7, 2039	From the USPTO record
US 11,925,820	Two-way protective respirator system with positive air flow against airborne contaminant particles and vapor components In force Term ends Sep 9, 2042 · From the USPTO record	In force	Term ends Sep 9, 2042	From the USPTO record

Also on record, not counted in the 9: 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.

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Published applications

Every application published under this name has become a patent.