IP Library › Assignment 054731/0596
Patent Assignment
Reel/Frame 054731/0596

Assignment of Assignor's Interest

Recorded: 2020-12-22 Pages: 5
Assignors
LETTS, JOHN B.
Executed: 2020-12-06
YAO, CHUNHUA
Executed: 2020-06-12
HUBBARD, MICHAEL J.
Executed: 2020-08-13
Assignee
FIRESTONE BUILDING PRODUCTS COMPANY, LLC
200 4TH AVENUE SOUTH, NASHVILLE, TENNESSEE, 37201
Covered Property (1)
Polyisocyanurate Coverboards with Improved Fire Resistance
Application: 17/131,160 →
Publication: US 2021/0108408
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Sep 19, 2022
From: FIRESTONE BUILDING PRODUCTS COMPANY, LLC
To: HOLCIM TECHNOLOGY LTD
Reel/Frame 061141/0683 →
Assignment of Assignor's Interest Sep 2, 2025
From: HOLCIM TECHNOLOGY LTD
To: AMRIZE TECHNOLOGY SWITZERLAND LLC
Reel/Frame 072795/0105 →