Patent Assignment
Reel/Frame 004125/0108
Assignment of Assignors Interest.
Recorded: 1983-05-09
Pages: 1
Assignor
MATTHEWS, J. DAVID
Executed: 1982-04-14
Assignee
ATLANTIC RICHFIELD COMPANY
A PA CORP, CITY OF LOS ANGELES, CALIFORNIA
Covered Property
(1)
Reducing the Tendency of Dried Coal to Spontaneously Ignite
Patent:
4,421,520 →
Application:
06/333,146 →
Related Assignments
(2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Jan 24, 2000
From: ATLANTIC RICHFIELD COMPANY
To: ARCH COAL, INC.
Reel/Frame 010557/0264 →
Patent Security Agreement
Oct 5, 2016
From: ARCH COAL, INC.
To: WILMINGTON TRUST, NATIONAL ASSOCIATION, IN ITS CAPACITY AS ADMINISTRATIVE AGENT AND COLLATERAL AGENT FOR THE SECURED PARTIES
Reel/Frame 040234/0699 →