Patent Assignment
Reel/Frame 030065/0783
Assignment of Assignor's Interest
Recorded: 2013-03-22
Pages: 7
Assignors
ZHOU, CHANGJUN
Executed: 2013-03-21
DERWIN, DAVID J.
Executed: 2013-03-21
WAWRZOS, FRANK
Executed: 2013-03-21
Assignee
SUPERIOR GRAPHITE COMPANY
10 SOUTH RIVERSIDE, SUITE 1470, CHICAGO, ILLINOIS, 60606
Covered Property
(1)
Drilling Fluid Additive for Loss Circulation and Wellbore Strengthening
Related Assignments
(7)
Other recorded transfers of the patent in this record — the chain of ownership.
Security Interest
Apr 8, 2019
From: SUPERIOR GRAPHITE CO.
To: BMO HARRIS BANK N.A.
Reel/Frame 048818/0678 →
Security Interest
Mar 27, 2023
From: SUPERIOR GRAPHITE CO.; SUPERIOR GRAPHITE EUROPE, LTD.
To: FGI WORLDWIDE LLC
Reel/Frame 063108/0926 →
Release of Security Interest
Mar 28, 2023
From: BMO HARRIS BANK N.A.
To: SUPERIOR GRAPHITE CO.
Reel/Frame 063130/0676 →
Security Interest
Oct 24, 2024
From: SUPERIOR GRAPHITE CO.; SUPERIOR GRAPHITE EUROPE, LTD.
To: FGI WORLDWIDE LLC
Reel/Frame 069011/0548 →
Release of Security Interest
Oct 20, 2025
From: FGI WORLDWIDE LLC
To: SUPERIOR GRAPHITE CO.; SUPERIOR GRAPHITE EUROPE, LTD.
Reel/Frame 072598/0629 →
Release of Security Interest
Oct 22, 2025
From: FGI WORLDWIDE LLC
To: SUPERIOR GRAPHITE CO.; SUPERIOR GRAPHITE EUROPE LTD.
Reel/Frame 072635/0843 →
Assignment of Assignor's Interest
Jan 8, 2026
From: SUPERIOR GRAPHITE CO.
To: EXXONMOBIL ADVANCED GRAPHITE SOLUTIONS LLC
Reel/Frame 073411/0343 →