IP Library › Assignment 016468/0158
Patent Assignment
Reel/Frame 016468/0158

Assignment of Assignor's Interest

Recorded: 2004-10-25 Pages: 2
Assignors
GRICHAR, CHARLES NEWTON
Executed: 2004-10-25
SEYFFERT, KENNETH WAYNE
Executed: 2004-10-25
MCCLUNG, GUY LAMONTE, III
Executed: 2004-10-25
Assignee
VARCO I/P, INC.
2000 SAM HOUSTON PARKWAY, HOUSTON, TEXAS, 77042
Covered Property (1)
Shale Shaker
Patent: 7,581,647 →
Application: 10/512,372 →
Publication: US 2006/0016768
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Aug 30, 2005
From: GRICHAR, CHARLES NEWTON; SEYFFERT, KENNETH WAYNE; MCCLUNG, GUY LAMONT III
To: VARCO I/P, INC.
Reel/Frame 016690/0784 →
Merger Jul 17, 2025
From: VARCO I/P, INC.
To: GRANT PRIDECO, INC.
Reel/Frame 071747/0694 →