EntityQ7961585· pop 10· linked from 30 articlesWaldo SemonSign in to saveAmerican inventor (1898–1999)Connectionschemical engineeringEntityAcademy of AchievementEntitychemistryEntityplasticEntityWayback MachineEntitydigital object identifierEntityInternational Standard Serial NumberEntitypatentEntityformulaEntityUniversity of WashingtonEntitypolyvinyl chlorideEntityDoctor of PhilosophyEntityDemopolisEntityBachelor of ScienceEntityHudsonEntityplasticizerEntitydibutyl phthalateEntitybubblegumEntityGoodrich CorporationCompanyElliott Cresson MedalEntityCategories1898 births1999 deaths20th-century American chemists20th-century American engineers20th-century American inventorsAmerican chemical engineersAmerican men centenariansAmerican polymer scientists and engineersHistory of the chemical industryPeople from Demopolis, AlabamaScientists from OhioUniversity of Washington College of Arts and Sciences alumni