Patent Assignment
Reel/Frame 051668/0476
Joint Ownership Acknowledgement
Recorded: 2020-01-22
Pages: 7
Assignor
W. R. GRACE & CO.-CONN.
Executed: 2019-02-28
Assignees
BRASKEM AMERICA, INC.
1735 MARKET STREET, 28TH FLOOR, PHILADELPHIA, PENNSYLVANIA, 19103
BRASKEM SA
RUA ETENO, 1561, POLO PETROQUIMICO DE CAMACARI, CAMACARI, BAHIA, CEP 42810-000, BRAZIL
BRASKEM EUROPE GMBH
AN DER WELLE 3, FRANKFURT AM MAIN, 60322, GERMANY
Covered Properties
(3)
Non-Phthalate Donor for Polyolefin Catalysts
PCT:
PCT/US2016/034431 ↗
Electron Donors for Ziegler-Natta Precatalyst Preparation and Catalyst System for Olefin Polymerization
PCT:
PCT/US2017/020880 ↗
Non-Phthalate Donor for Polyolefin Catalysts
Application:
62/340,347 →
Related Assignments
(10)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignor's Interest
Oct 22, 2016
From: BASF CORPORATION
To: W. R. GRACE & CO. - CONN.
Reel/Frame 040255/0136 →
Assignment of Assignor's Interest
Nov 11, 2016
From: BASF CORPORATION
To: W. R. GRACE & CO. - CONN.
Reel/Frame 040283/0358 →
Assignment of Assignor's Interest
Sep 6, 2019
From: BRASKEM EUROPE GMBH
To: BRASKEM AMERICA, INC.
Reel/Frame 050295/0922 →
Assignment of Assignor's Interest
Sep 6, 2019
From: BRASKEM SA
To: BRASKEM AMERICA, INC.
Reel/Frame 050295/0371 →
Assignment of Assignor's Interest
Jan 22, 2020
From: FERNANDES, JONAS ALVES
To: BRASKEM AMERICA, INC.
Reel/Frame 051589/0618 →
Nunc Pro Tunc Assignment
Jan 22, 2020
From: NGUYEN, BINH THANH; MARIN, VLADIMIR P.; PATEL, MUSHTAQ AHMED
To: BASF CORPORATION
Reel/Frame 051589/0686 →
Assignment of Assignor's Interest
Jan 22, 2020
From: W. R. GRACE & CO.-CONN.
To: BRASKEM AMERICA, INC.; BRASKEM SA; BRASKEM EUROPE GMBH
Reel/Frame 051589/0765 →
Assignment of Assignor's Interest
Feb 5, 2021
From: FERNANDES, JONAS ALVES
To: BRASKEM AMERICA, INC.
Reel/Frame 055166/0850 →
Assignment of Assignor's Interest
Feb 5, 2021
From: NGUYEN, BINH THANH; XI, ZHENXING
To: W.R. GRACE & CO.-CONN.
Reel/Frame 055167/0104 →
Assignment of Assignor's Interest
Mar 26, 2026
From: W.R. GRACE & CO.- CONN.
To: BRASKEM AMERICA, INC.
Reel/Frame 074192/0694 →