IP Library › Assignment 061841/0703
Patent Assignment
Reel/Frame 061841/0703

Assignment of Assignor's Interest

Recorded: 2022-11-21 Pages: 6
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: 17/592,178 →
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: FIRESTONE BUILDING PRODUCTS COMPANY, LLC
To: HOLCIM TECHNOLOGY LTD
Reel/Frame 061841/0853 →
Assignment of Assignor's Interest Nov 25, 2025
From: HOLCIM TECHNOLOGY LTD
To: AMRIZE TECHNOLOGY SWITZERLAND LLC
Reel/Frame 073701/0847 →