Inventor
YAO CHUNHUA
US20 patents
⚠️ This page may combine multiple inventors who share the name “YAO CHUNHUA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HOLCIM TECHNOLOGY LTD
7 patentsUS12291620B2May 6, 2025
Isocyanate-based foam construction boards
HOLCIM TECHNOLOGY LTD0 citations62
US11913222B2Feb 27, 2024
Polyisocyanurate coverboards with improved fire resistance
HOLCIM TECHNOLOGY LTD0 citations62
US11618235B2Apr 4, 2023
Encapsulated fragile insulation materials
HOLCIM TECHNOLOGY LTD0 citations62
US11999833B2Jun 4, 2024
Process for producing isocyanate-based foam construction boards
HOLCIM TECHNOLOGY LTD0 citations61
US12358190B1Jul 15, 2025
Process to yield foam construction boards with low surface irregularities
HOLCIM TECHNOLOGY LTD0 citations55
US12006414B2Jun 11, 2024
Process for producing isocyanate-based foam construction boards
HOLCIM TECHNOLOGY LTD0 citations52
US12263622B1Apr 1, 2025
Process for producing isocyanate-based foam construction boards
HOLCIM TECHNOLOGY LTD0 citations51
FIRESTONE BUILDING PROD CO LLC
3 patentsUS10870987B1Dec 22, 2020
Isocyanate-based foam construction boards
FIRESTONE BUILDING PROD CO LLC7 citations84
US11174364B2Nov 16, 2021
Process for producing isocyanate-based foam construction boards
FIRESTONE BUILDING PROD CO LLC2 citations71
US11242681B2Feb 8, 2022
Polyisocyanurate coverboards with improved fire resistance
FIRESTONE BUILDING PROD CO LLC0 citations62