Patent Assignment
Reel/Frame 006537/0058
Assignment of Assignor's Interest
Recorded: 1993-05-17
Pages: 2
Assignor
YUN, CHONG S.
Executed: 1993-02-24
Assignee
ATLANTIC RICHFIELD COMPANY
2300 WEST PLANO PARKWAY, PLANO, TEXAS, 75075
Covered Property
(1)
Fabric Equipment Guard
Patent:
5,346,754 →
Application:
08/023,656 →
Related Assignments
(6)
Other recorded transfers of the patent in this record — the chain of ownership.
First Amendment to Patent Sec. Agmnt.
Feb 23, 1999
From: NATONAL ELECTRICAL BENEFIT FUND
To: RAMTRON INTERNATIONAL CORPORATION
Reel/Frame 009756/0085 →
Assignment of Assignor's Interest
Jan 24, 2000
From: ATLANTIC RICHFIELD COMPANY
To: ARCH COAL, INC.
Reel/Frame 010557/0264 →
Security Agreement
Jan 10, 2005
From: ARCH COAL, INC.
To: PNC BANK, NATIONAL ASSOCIATION
Reel/Frame 015541/0001 →
Security Agreement
Jun 14, 2011
From: ARCH COAL, INC.
To: PNC BANK, NATIONAL ASSOCIATION
Reel/Frame 026440/0760 →
Acknowledgment of Security Interest in Patents (Borrower)
May 2, 2014
From: ARCH COAL, INC.
To: UMB BANK NATIONAL ASSOCIATION
Reel/Frame 032815/0292 →
Release of Security Interest
Jun 24, 2016
From: PNC BANK NATIONAL ASSOCIATION
To: ARCH COAL, INC.
Reel/Frame 039003/0400 →