United States Patent and Trademark Office, Patent Assignment 44539/955:
Assignment Of Assignors Interest

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Assignor
Assignee

Alexco Environmental Group (us) Inc.
Paperwork Executed December 28, 2017

Transfer

Recorded
January 4, 2018

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Alexco Water And Environment Inc.

Alexco Water And Environment Inc.
12150 E Briarwood Ave., #135
Centennial, CO 80112

Patents
Correspondent

In-situ Treatment Of Waste Stacks, Soils Or Earth Materials To Immobilize Metals Contained Therein

USX0Patent Application No. 08772174, Filed December 18, 1996

USB1Utility Patent No. 5710361, Issued January 20, 1998

Inhibiting Acidmine Drainage By Displacing Oxygen In Rock Heap

USX0Patent Application No. 09187471, Filed November 6, 1998

USB1Utility Patent No. 6196765, Issued March 6, 2001

In Situ Immobilization Of Metals In Waste Stacks And Waste Stack Affected Zones

USX0Patent Application No. 08573230, Filed December 15, 1995

USB1Utility Patent No. 5632715, Issued May 27, 1997

In situ immobilization within density variant bodies of water

USX0Patent Application No. 09678272, Filed October 3, 2000

USB1Utility Patent No. 6350380, Issued February 26, 2002

Gas-phase Modification In Earth Materials

USX0Patent Application No. 09800636, Filed March 6, 2001

USA1Application Publication No. 20010032725, Issued October 25, 2001

Gas-phase Modification In Earth Materials

USB2Utility Patent No. 6435769, Issued August 20, 2002

In Situ Immobilization Of Metals Within Density Variant Bodies Of Water

USX0Patent Application No. 10398703, Filed August 13, 2003

USA1Application Publication No. 20040020848, Issued February 5, 2004

In Situ Immobilization Of Metals Within Density Variant Bodies Of Water

USB2Utility Patent No. 7011756, Issued March 14, 2006

Pantea Garroussi
Davis Graham & Stubbs, LLP
1550 Seventeenth Street, Suite 500
Denver, CO 80202
Phone: +1 303 892 9400
Fax: +8931 893 893 1379

Updated January 5, 2018

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