Patent Assignment
Reel/Frame 022712/0631
Assignment of Assignor's Interest
Recorded: 2009-05-20
Pages: 2
Assignor
ISHIZAWA, TOSHITAKA
Executed: 2009-05-08
Assignee
HITACHI METALS, LTD.
2-1, SHIBAURA 1-CHOME, MINATO-KU, TOKYO, JAPAN
Covered Property
(1)
Ceramic Honeycomb Filter and Its Production Method
Related Assignments
(4)
Other recorded transfers of the patent in this record — the chain of ownership.
Change of Address
Nov 20, 2025
From: HITACHI METALS, LTD.
To: HITACHI METALS, LTD.
Reel/Frame 073636/0806 →
Change of Address
Dec 9, 2025
From: HITACHI METALS, LTD.
To: HITACHI METALS, LTD.
Reel/Frame 073917/0124 →
Change of Name
Dec 9, 2025
From: HITACHI METALS, LTD.
To: PROTERIAL, LTD.
Reel/Frame 073917/0160 →
Security Interest
Jun 29, 2026
From: MIRAI CASTING AMERICA, INC.
To: SECOND AVENUE CAPITAL PARTNERS, LLC
Reel/Frame 075121/0147 →