Inventor
HEMPHILL MARK
US12 patents
⚠️ This page may combine multiple inventors who share the name “HEMPHILL MARK”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
UNITED STATES GYPSUM CO
7 patentsUS11186066B2Nov 30, 2021
Gypsum board from gypsum having high level of chloride salt and a perforated sheet and methods associated therewith
UNITED STATES GYPSUM CO3 citations72
US11186067B2Nov 30, 2021
Gypsum board from gypsum having high level of chloride salt and a starch layer and methods associated therewith
UNITED STATES GYPSUM CO5 citations72
US11787739B2Oct 17, 2023
Flour binder for gypsum board, and related methods, product, and slurries
UNITED STATES GYPSUM CO0 citations61
US11002010B2May 11, 2021
Methods for making high sound transmission class gypsum boards and gypsum boards made by the method
UNITED STATES GYPSUM CO1 citations57
US11702373B2Jul 18, 2023
Gypsum wallboard with enhanced fire resistance, and related coatings and methods
UNITED STATES GYPSUM CO1 citations56
US11999658B2Jun 4, 2024
High salt gypsum wallboard containing salt absorbents and methods of making same
UNITED STATES GYPSUM CO0 citations51
US11046053B2Jun 29, 2021
Composite gypsum board and related methods
UNITED STATES GYPSUM CO0 citations50
KNAUF GIPS KG
3 patentsUS12304871B2May 20, 2025
Open-celled gypsum core, gypsum acoustic panel, and method for making same
KNAUF GIPS KG0 citations59
US12448328B2Oct 21, 2025
Gypsum panel containing ammonium-exchanged vermiculite and methods
KNAUF GIPS KG0 citations51
US11760689B2Sep 19, 2023
Methods of removing chloride from gypsum having high level of chloride salt
KNAUF GIPS KG0 citations51