Assignment of Assignor's Interest

Recorded: 2015-05-12 Pages: 12

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Assignors

VAN PETEGEM, RONALD

Executed: 2010-07-27

KAKADJIAN, SARKIS R.

Executed: 2010-04-05

ZAMORA, FRANK

Executed: 2010-04-05

Assignee

WEATHERFORD/LAMB, INC.

2000 ST. JAMES PLACE, HOUSTON, TEXAS, 77056

Covered Property (1)

Weakly Consolidated, Semi Consolidated Formation, or Unconsolidated Formations Treated with Zeta Potential Altering Compositions to Form Conglomerated Formations

Patent: 9,725,634 →

Application: 14/587,755 →

Publication: US 2015/0111791

Related Assignments (2)

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

Assignment of Assignor's Interest Oct 6, 2017

From: WEATHERFORD TECHNOLOGY HOLDINGS, LLC

To: LUBRIZOL OILFIELD SOLUTIONS, INC.

Reel/Frame 043803/0179 →

Assignment of Assignor's Interest Jan 18, 2018

From: LUBRIZOL OILFIELD SOLUTIONS, INC.

To: THE LUBRIZOL CORPORATION

Reel/Frame 044655/0922 →