Inventor
LEFEVER JOANNE
US11 patents
⚠️ This page may combine multiple inventors who share the name “LEFEVER JOANNE”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ARMSTRONG WORLD IND INC
6 patentsUS9702142B1Jul 11, 2017
Water stain and sag resistant acoustic building panel
ARMSTRONG WORLD IND INC15 citations91
US6693512B1Feb 17, 2004
Device location and identification system
ARMSTRONG WORLD IND INC49 citations91
US10435888B2Oct 8, 2019
Water stain and sag resistant acoustic building panel
ARMSTRONG WORLD IND INC3 citations72
US12208602B2Jan 28, 2025
Humidity and sag resistant building panel
ARMSTRONG WORLD IND INC0 citations58
US11633935B2Apr 25, 2023
Humidity and sag resistant building panel
ARMSTRONG WORLD IND INC0 citations58
US10639865B2May 5, 2020
Humidity and sag resistant building panel
ARMSTRONG WORLD IND INC0 citations47
GARDINIER INC
3 patentsUS4247522AJan 27, 1981
Method of purifying uranium tetrafluoride hydrate and preparing uranium (VI) peroxide hydrate using a fluoride precipitating agent
GARDINIER INC12 citations68
US4250155AFeb 10, 1981
Method of purifying phosphoric acid after solvent extraction
GARDINIER INC4 citations53
US4258012AMar 24, 1981
Method of purifying uranium tetrafluoride hydrate and preparing uranium (VI) peroxide hydrate using a fluoride complexing agent
GARDINIER INC3 citations50