Inventor
LETTS JOHN
US7 patents
⚠️ This page may combine multiple inventors who share the name “LETTS JOHN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FIRESTONE BUILDING PROD CO LLC
4 patentsUS10000922B1Jun 19, 2018
Construction boards with coated inorganic facer
FIRESTONE BUILDING PROD CO LLC14 citations81
US11174364B2Nov 16, 2021
Process for producing isocyanate-based foam construction boards
FIRESTONE BUILDING PROD CO LLC2 citations71
US10450741B2Oct 22, 2019
Construction boards with coated inorganic facer
FIRESTONE BUILDING PROD CO LLC0 citations49
US9221234B2Dec 29, 2015
High density polyurethane and polyisocyanurate construction boards and composite boards
FIRESTONE BUILDING PROD CO LLC0 citations46