Patent assignee · CH · COMPANY

ROLIC AG

138Patents
52Active
138Granted
47Portfolio score

Filing activity: Jan 28, 1991 → Sep 12, 2019 · 21 expiring within 5 years

Most-cited patents

PatentTitleAreaCited byStatus
US5686931A Device for displaying colors produced by controllable cholesteric color filters Physics 111 Expired
US6160597A Optical component and method of manufacture Physics 100 Expired
US5903330A Optical component with plural orientation layers on the same substrate wherein the surfaces of the orientation layers have different patterns and direction Physics 85 Expired
US6496287B1 Optical identification element Physics 72 Expired
US6369869B2 Optical component and method of manufacture Physics 62 Expired
US6717644B2 Optical component and method of manufacture Physics 60 Expired
US6201087A Coumarin and quinolinone derivatives for the production of orienting layers for liquid crystals Physics 52 Expired
US5784139A Image display device Electricity 51 Expired
US5838407A Liquid crystal display cells Physics 49 Expired
US6107427A Cross-linkable, photoactive polymer materials Physics 47 Expired
US6597422B1 Orientation layer for a liquid crystal material Physics 46 Expired
US6340506B1 Photocrosslinkable polyimides Physics 46 Expired
US6496239B2 Optical component for producing linearly polarized light Physics 40 Expired
US5965761A Photoactive silane derivatives for liquid crystals Physics 36 Expired
US6734936B1 Optical element containing an optically anisotropic layer having at least two regions with different molecular orientations Physics 36 Expired
US6746729B1 Liquid crystal compounds Chemistry; Metallurgy 35 Expired
US6806930B2 Optical security device Chemistry; Metallurgy 30 Expired
US6300991A Photo-oriented polymer network material having desired azimuthal orientation and tilt angle and method for its production Physics 28 Expired
US5800733A Photo cross-linkable liquid crystal derivatives Chemistry; Metallurgy 27 Expired
US6649230B1 Photoactive polymers Physics 25 Expired
US6144428A Optical component Performing Operations; Transporting 23 Expired
US6277502A Photocrosslinkable silane derivatives Chemistry; Metallurgy 23 Expired
US6733690B1 Laterally substituted curable liquid crystals Chemistry; Metallurgy 22 Expired
US6395351B1 Polymerisable liquid crystalline compounds Chemistry; Metallurgy 22 Expired
US6215539A Photo-oriented polymer network material having desired azimuthal orientation and tilt angle and method for its production Physics 22 Expired

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