Inventor · Krefeld, DE

Manfred Schreckenberg

23Patents
14h-index
27Co-inventors
81Inventor score

Filing activity: Jun 11, 1975 → Jul 19, 1995

Most-cited inventions

PatentTitleAreaCited byStatus
US4333809A Cross-linkable polycarbonate elastomers, a process for their preparation and use for packaging medicines Chemistry; Metallurgy 56 Expired
US4506066A Thermoplastic polycarbonates, their preparation and their use as shaped articles and films Chemistry; Metallurgy 43 Expired
US4297455A Process for the preparation of carbonic acid aryl esters of polyester-diols lengthened via carbonate groups and their use for the preparation of polyester-diol bis-diphenol carbonates and polyester/polycarbonates Chemistry; Metallurgy 32 Expired
US4216298A Process for the preparation of carbonic acid bis-diphenol esters of polyester-diols and their use for the preparation of high-molecular segmented polyester/polycarbonates which can be processed as thermoplastics Chemistry; Metallurgy 24 Expired
US4169868A Process for the preparation of new high-molecular segmented polyester-polycarbonates which can be processed by thermoplastic methods and new polyester-polycarbonates obtained according to the process Chemistry; Metallurgy 18 Expired
US4267303A Process for the preparation of polymers with diphenol carbonate end groups Chemistry; Metallurgy 18 Expired
US4196276A High-molecular weight, segmented, polycarbonate elastomers Chemistry; Metallurgy 18 Expired
US4191705A Process for the preparation of carbonic acid esters of polyester-polyols Chemistry; Metallurgy 16 Expired
US4281101A Process for the preparation of aliphatic-aromatic polycarbonates with diphenol carbonate end groups and their use for the preparation of high-molecular, segmented, aliphatic-aromatic polycarbonate elastomers which can be processed as thermoplastics Chemistry; Metallurgy 16 Expired
US4631319A Thermosetting cyanate resin and the use thereof for the production of composite materials and IPNs Emerging Cross-Sectional Technologies 16 Expired
US4217437A Process for the preparation of carbonic acid bis-diphenol esters of polyalkylene oxide-diols lengthened via carbonate groups and their use for the preparation of high-molecular, segmented polyether/polycarbonates which can be processed as thermoplastics Chemistry; Metallurgy 16 Expired
US4754001A Thermosetting cyanate resin and the use thereof for the production of composite materials and IPNs Emerging Cross-Sectional Technologies 15 Expired
US5004779A Process for the preparation of aqueous, oxidatively drying alkyd resins and their use in or as aqueous lacquers and coating compounds Chemistry; Metallurgy 15 Expired
US4217297A Process for the preparation of carbonic acid aryl esters of polyester-diols lengthened via carbonate groups Chemistry; Metallurgy 14 Expired
US4014889A Process for preparing ketones Chemistry; Metallurgy 14 Expired
US4607070A Polyether-copolycarbonates for dialysis membranes Performing Operations; Transporting 14 Expired
US4927903A Diphenol monoesters of carboxylic acids and process for their preparation Chemistry; Metallurgy 13 Expired
US4252922A Polycarbonate molding compositions with improved resilience properties Chemistry; Metallurgy 9 Expired
US4563516A Polyether-polycarbonates for dialysis membranes Performing Operations; Transporting 9 Expired
US4430492A High-molecular, segmented, thermoplastically processable, aromatic polycarbonates containing co-condensed dimeric fatty acid esters, their preparation and their use Chemistry; Metallurgy 5 Expired
US4435544A Mixtures of polycarbonate elastomers, containing hydrogenated dimeric fatty acid esters as condensed units, and polyolefines and, optionally, other polycarbonates Chemistry; Metallurgy 2 Expired
US5578827A Process for monitoring polycondensation or polyaddition reactions Physics 2 Expired
US4735721A Polyether-copolycarbonates for dialysis membranes Performing Operations; Transporting 1 Expired

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