Patent Assignment
Reel/Frame 009347/0028
Assignment of Assignor's Interest
Recorded: 1998-07-23
Pages: 3
Assignor
WELCH, VINCENT A.
Executed: 1998-06-30
Assignee
RAYTHEON ENGINEERS & CONSTRUCTORS, INC.
141 SPRING STREET, LEXINGTON, MASSACHUSETTS, 02173
Covered Property
(1)
Cascade Reboiling of Ethylbenzene/Styrene Columns
Patent:
6,171,449 →
Application:
09/100,433 →
Related Assignments
(6)
Other recorded transfers of the patent in this record — the chain of ownership.
Merger-Name Change
Mar 26, 2001
From: RAYTHEON ENGINEERS & CONSTRUCTORS, INC.
To: WASHINGTON GROUP INTERNATIONAL, INC.
Reel/Frame 011648/0758 →
Security Interest
Jun 28, 2001
From: WASHINGTON GROUP INTERNATIONAL, INC. F/K/A MORRISON KNUDSEN CORP.
To: CREDIT SUISSE FIRST BOSTON
Reel/Frame 011958/0038 →
Release of Security Agreement
Apr 24, 2003
From: CREDIT SUISSE FIRST BOSTON
To: WASHINGTON GROUP INTERNATIONAL, INC.
Reel/Frame 013986/0457 →
Release of Security Agreement
Apr 24, 2003
From: CREDIT SUISSE FIRST BOSTON
To: WASHINGTON GROUP INTERNATIONAL, INC.
Reel/Frame 013986/0470 →
Assignment of Assignor's Interest
Jul 10, 2003
From: WASHINGTON GROUP INTERNATIONAL, INC.
To: STONE & WEBSTER, INC.
Reel/Frame 014261/0158 →
Assignment of Assignor's Interest
May 14, 2012
From: STONE & WEBSTER, INC.
To: STONE & WEBSTER PROCESS TECHNOLOGY, INC.
Reel/Frame 028204/0349 →