IP Library › Assignment 061841/0853
Patent Assignment
Reel/Frame 061841/0853

Assignment of Assignor's Interest

Recorded: 2022-11-21 Pages: 5
Assignor
Assignee
HOLCIM TECHNOLOGY LTD
GRAFENAUWEG 10, 6300 ZUG, SWITZERLAND
Covered Property (1)
Polyisocyanurate Coverboards with Improved Fire Resistance
Application: 17/592,178 →
Publication: US 2022/0154453
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Nov 21, 2022
From: LETTS, JOHN B.; YAO, CHUNHUA; HUBBARD, MICHAEL J.
To: FIRESTONE BUILDING PRODUCTS COMPANY, LLC
Reel/Frame 061841/0703 →
Assignment of Assignor's Interest Nov 25, 2025
From: HOLCIM TECHNOLOGY LTD
To: AMRIZE TECHNOLOGY SWITZERLAND LLC
Reel/Frame 073701/0847 →