Covered Property (1)

Related Assignments (10)

Other recorded transfers of the patent in this record — the chain of ownership.

Assignment of Assignors Interest. Dec 26, 1985

From: SIDDOWAY, MARK A.; HARDESTY, DONALD E.; KING, JOHN R.; MACHMER, WILLIAM C.

To: SHELL OIL COMPANY, A CORP OF DELAWARE

Reel/Frame 004493/0733 →

Assignment of Assignors Interest. Jul 5, 1990

From: SHELL OIL COMPANY

To: SHELL MINING COMPANY

Reel/Frame 005363/0704 →

Change of Name Effective on 11/23/1992 Dec 21, 1992

From: SHELL MINING COMPANY

To: SMC MINING COMPANY C/O ZEIGLER COAL HOLDING

Reel/Frame 006389/0327 →

Security Interest Dec 24, 1992

From: SMC MINING COMPANY

To: STATE STREET BANK AND TRUST COMPANY OF CONNECTICUT, NATIONAL ASSOCIATION, AS COLLATERAL AGENT.

Reel/Frame 006372/0561 →

Amendment to Patent Agreement as of October 19, 1994 Mar 6, 1995

From: SMC MINING COMPANY

To: STATE STREET BANK AND TRUST COMPANY OF CONNECTICUT, NATIONAL ASSOCIATION, AS COLLATERAL AGENT

Reel/Frame 007365/0436 →

Release of Collateral from Mortgage Aug 31, 1998

From: STATE STREET BANK AND TRUST COMPANY OF CONNECTICUT, N.A.

To: SMC MINING COMPANY

Reel/Frame 009414/0228 →

Release of Premises from Mortgage Aug 31, 1998

From: STATE STREET BANK AND TRUST COMPANY OF CONNECTICUT, N.A.

To: SMC MINING COMPANY

Reel/Frame 009414/0030 →

Security Interest Oct 15, 1998

From: ZEIGLER COAL HOLDING COMPANY; SMC MINING COMPANY (NOW KNOWN AS BLUEGRASS COAL DEVELOPMENT CO.); MOUNTAINEER COAL DEVELOPMENT COMPANY (MARROWBONE DEVELOPMENT CO. AS OWNER)

To: UBS AG, STAMFORD BRANCH

Reel/Frame 009507/0297 →

Assignment of Assignor's Interest Dec 16, 1999

From: BLUEGRASS COAL DEVELOPMENT COMPANY

To: SGI INTERNATIONAL

Reel/Frame 010499/0081 →

Grant of Patent Security Interest May 14, 2002

From: BLUEGRASS COAL DEVELOPMENT COMPANY

To: DEUTSCHE BANK TRUST COMPANY AMERICAS, AS ADMINISTRATIVE AGENT

Reel/Frame 012906/0573 →