Greentech Environment Co., Ltd.

11 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

Sep 2039

Next term end

When these terms end

5 yrs10 yrs20 yrs

Held patents by the year their term ends

20262027202820292030203120322033203420352036203720382039204020412042204320442045

Fee deadlines

No maintenance fee falls due on this company's record before Nov 14, 2027.

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.

Patent	Title	Status	Expires	Confidence
US 11,046,593	System for treating reverse-osmosis concentrated water with permanent hardness In force Term ends Sep 17, 2039 · From the USPTO record	In force	Term ends Sep 17, 2039	From the USPTO record
US 12,023,628	Drinking water purification system with a backwashable filter cartridge and a nanofiltration system In force Term ends Dec 8, 2041 · From the USPTO record	In force	Term ends Dec 8, 2041	From the USPTO record
US 11,440,819	Dosing control method and system for micro-flocculation in ultrafiltration In force Term ends Mar 24, 2042 · From the USPTO record	In force	Term ends Mar 24, 2042	From the USPTO record
US 11,772,995	Total Nitrogen Removal Device for Sewage and Method for Operating the Same In force Term ends Mar 25, 2043 · High confidence	In force	Term ends Mar 25, 2043	High confidence
US 11,760,675	System and Method for Treating Printed Circuit Board (PCB) Wastewater In force Term ends Mar 31, 2043 · High confidence	In force	Term ends Mar 31, 2043	High confidence
US 11,772,999	System and Method for Treating Reverse-Osmosis Concentrated Water with High Temporary Hardness In force Term ends Mar 31, 2043 · High confidence	In force	Term ends Mar 31, 2043	High confidence
US 12,486,179	Control method for delaying nanofiltration membrane aluminum fouling of water treatment system In force Term ends Feb 29, 2044 · From the USPTO record	In force	Term ends Feb 29, 2044	From the USPTO record
US 12,145,869	Hollow Fiber Nanofiltration Membrane System and Control Method Thereof In force Term ends May 23, 2044 · High confidence	In force	Term ends May 23, 2044	High confidence
US 12,162,783	Saline Wastewater Treatment Method and System In force Term ends May 24, 2044 · High confidence	In force	Term ends May 24, 2044	High confidence
US 12,151,210	Method for Controlling Hollow Fiber Nanofiltration Membrane System with Controllable Power Consumption In force Term ends May 28, 2044 · High confidence	In force	Term ends May 28, 2044	High confidence

10 of 11 patents shown.

Pro members see all 11.

Pro members: see all 11 patents

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.