Inventor · Sarnia, ON, CA

Douglas C. Edwards

14Patents
8h-index
5Co-inventors
61Inventor score

Filing activity: Jul 25, 1974 → Jun 16, 1987

Most-cited inventions

PatentTitleAreaCited byStatus
US4659754A Dispersions of fibres in rubber Chemistry; Metallurgy 93 Expired
US4357432A Vulcanizates Chemistry; Metallurgy 26 Expired
US4482657A Silica-polymer mixtures Chemistry; Metallurgy 24 Expired
US4588780A Fibre containing polymers and process for production thereof Chemistry; Metallurgy 10 Expired
US4150014A Vulcanizates containing siliceous fillers Chemistry; Metallurgy 10 Expired
US4138389A Polymeric antioxidants Chemistry; Metallurgy 8 Expired
US4152308A Siliceous filled vulcanizates Chemistry; Metallurgy 8 Expired
US4150015A Vulcanizates containing silica Chemistry; Metallurgy 8 Expired
US4179421A Silica filled vulcanizates Chemistry; Metallurgy 7 Expired
US4026933A Particulate oil-black masterbatch Chemistry; Metallurgy 7 Expired
US4486562A Process for making vulcanized carbon black-reinforced bromobutyl rubber films Chemistry; Metallurgy 6 Expired
US4101434A Mineral oil compositions with an isobutylene polymer containing bound 2,6-di-t-butyl phenol groups Chemistry; Metallurgy 3 Expired
US4786690A Process for polymer production Chemistry; Metallurgy 3 Expired
US4614772A Low molecular weight polymer process Chemistry; Metallurgy 3 Expired

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.