Patent assignee · DE · COMPANY

Röhm GmbH

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28Patents
26Active
28Granted
51Portfolio score

Filing activity: Jul 9, 1979 → Nov 23, 2022 · 1 expiring within 5 years

Most-cited patents

PatentTitleAreaCited byStatus
US6495861B1 Light-emitting semiconductor chip Electricity 47 Expired
US8092731B2 Method for producing a thermoplastic plastic film, film and use thereof Performing Operations; Transporting 7 Active
US10766847B2 Method for producing methylmethacrylate Chemistry; Metallurgy 6 Active
US4232123A Method for making water-soluble hydrolyzates of keratinaceous materials Human Necessities 3 Expired
US11299449B2 Process for preparing MMA in high yields Chemistry; Metallurgy 3 Active
US11472762B2 Process for producing alkyl methacrylates and optionally methacrylic acid Chemistry; Metallurgy 2 Active
US11427664B2 Process for producing optical molding materials Chemistry; Metallurgy 2 Active
US10611130B2 Extruded matt foil with improved mechanical properties and a high weathering resistance Performing Operations; Transporting 2 Active
US9744674B2 Gripper and process for manufacturing a gripper Performing Operations; Transporting 0 Active
US11858890B2 Reactor and process for producing alkyl (meth)acrylates Emerging Cross-Sectional Technologies 0 Active
US11919846B2 Continuous process for preparing methacrolein Chemistry; Metallurgy 0 Active
US11905239B2 Process for producing methacrylic acid or methacrylic acid esters Performing Operations; Transporting 0 Active
US11661392B2 Safe method for tandem C-4 oxidation to methacrylic acid Chemistry; Metallurgy 0 Active
US11680033B2 Process for preparing methacrolein from formaldehyde and propionaldehyde and preparation plant for the purpose Chemistry; Metallurgy 0 Active
US11542218B2 Process for preparing methacrolein from formaldehyde and propionaldehyde and preparation plant for the purpose Chemistry; Metallurgy 0 Active
US11731931B2 Process for purifying methyl methacrylate of low-boiling components Chemistry; Metallurgy 0 Active
US11939288B2 Process for producing alkyl methacrylates with improved water and acid management Emerging Cross-Sectional Technologies 0 Active
US11866387B2 Process for producing methacrylic acid or methacrylic acid esters Performing Operations; Transporting 0 Active
US11780944B2 Process for producing optical molding materials Chemistry; Metallurgy 0 Active
US10737334B2 Chucking means Emerging Cross-Sectional Technologies 0 Active
US11661395B2 Reactor and process for producing alkyl methacrylates Performing Operations; Transporting 0 Active
US11319433B2 Light scattering polymeric composition with improved scattering efficiency and improved mechanical properties Chemistry; Metallurgy 0 Active
US12297170B2 Simplified workup of the reactor output from an oxidative esterification Emerging Cross-Sectional Technologies 0 Active
US11560350B2 Process for producing alkyl methacrylates with improved water and acid management Emerging Cross-Sectional Technologies 0 Active
US11807699B2 Acrylic composition having an increased resistance to alcohols, oils and fats Chemistry; Metallurgy 0 Active

Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.