Polyearn Development Corp.

Also on record

Records under this name other than patents Polyearn Development Corp. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.

Showing 1 to 6 of 6 · Back to Polyearn Development Corp.

Patent	Title	Status	Expires	Confidence
US 6,131,605	Automatic drain for freight container Lapsed on the fee record Ended Oct 17, 2012 · From the USPTO record	Lapsed on the fee record	Ended Oct 17, 2012	From the USPTO record
US 5,107,622	Sealing for containers, in particular for refrigerated containers Term ended Term ended no later than Apr 28, 2012 · Low confidence	Term ended	Term ended no later than Apr 28, 2012	Low confidence
US 5,201,340	Automatic drainage device for cargo containers Term ended Term ended no later than Apr 13, 2013 · Low confidence	Term ended	Term ended no later than Apr 13, 2013	Low confidence
US 5,419,456	Connection between the lower end of a side wall plate and the bottom plate of a large container Term ended Term ended no later than May 30, 2015 · Low confidence	Term ended	Term ended no later than May 30, 2015	Low confidence
US 5,632,180	Method of and apparatus for producing corrugated sheet with plane-parallel outer edge surfaces Term ended Term ended no later than May 27, 2017 · Low confidence	Term ended	Term ended no later than May 27, 2017	Low confidence
US 5,987,910	Large-volume insulated shipping container Term ended Term ended no later than Nov 23, 2019 · Low confidence	Term ended	Term ended no later than Nov 23, 2019	Low confidence