The Chicago Corporation investment trust is formed
The Chicago Corporation's subsidairy Tennessee Gas is incorporated as Tenneco, Inc.
Tenneco, Inc. spins-off its automotive division as Tenneco Automotive
The company rebrands as Tenneco to represent the expanding markets it served
Tenneco organizes its business into two distinct divisions: Clean Air and Ride Performance
Tenneco acquired Federal-Mogul, doubling the size of the company
Tenneco restructures its business into four business groups: Clean Air, DRiV, Performance Solutions and Powertrain
Tenneco is acquired by Apollo Global Management
