IP Library › Assignment 054606/0058
Patent Assignment
Reel/Frame 054606/0058

Assignment of Assignor's Interest

Recorded: 2020-12-10 Pages: 4
Assignors
LETTS, JOHN B.
Executed: 2019-01-31
YAO, CHUNHUA
Executed: 2019-01-31
HUBBARD, MICHAEL J.
Executed: 2019-06-21
Assignee
FIRESTONE BUILDING PRODUCTS COMPANY, LLC
200 4TH AVENUE SOUTH, NASHVILLE, TENNESSEE, 37201
Covered Property (1)
Isocyanate-Based Foam Construction Boards
Application: 17/117,667 →
Publication: US 2021/0095090
Related Assignments (2)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Jun 14, 2022
From: FIRESTONE BUILDING PRODUCTS COMPANY, LLC
To: HOLCIM TECHNOLOGY LTD
Reel/Frame 060366/0033 →
Assignment of Assignor's Interest Sep 2, 2025
From: HOLCIM TECHNOLOGY LTD
To: AMRIZE TECHNOLOGY SWITZERLAND LLC
Reel/Frame 072795/0105 →