| Patents for C09B 23 - Methine or polymethine dyes, e.g. cyanine dyes (4,654) |
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| 07/11/1989 | US4847378 Chromogenic polycyclic azamethines |
| 07/06/1989 | DE3743833A1 Amphiphile hemicyanine Amphiphilic hemicyanines |
| 07/04/1989 | US4845235 Pyrroline derivative |
| 06/29/1989 | WO1989005843A1 Non-linear optical material containing a hemicyanine compound and process for producing it |
| 06/21/1989 | EP0321284A2 Laser-sensitive electrophotographic material |
| 06/15/1989 | WO1989005478A1 Silver halide photographic material |
| 06/14/1989 | EP0319728A1 Naphthalactam trimethine dyestuffs and optical recording medium containing these dyestuffs |
| 06/13/1989 | US4839336 Alpha-cyano arylidene pyrazolone magenta dye-donor element for thermal dye transfer |
| 06/13/1989 | US4839274 Novel polymethine dyes and UV absorbers containing a triarylborylisocyano group and imaging compositions containing these dyes |
| 06/13/1989 | US4839271 Sensitizers |
| 06/13/1989 | US4839260 Novel polymethine dyes and UV absorbers and imaging materials for their use |
| 05/31/1989 | EP0318294A2 Dimeric and trimeric cationic dyes |
| 05/30/1989 | CA1254743A1 Yellow dye-donor element used in thermal dye transfer |
| 05/24/1989 | EP0317308A2 Photographic element containing yellow filter dyes having tricyanovinyl groups |
| 05/23/1989 | US4833246 Novel pyrazolone dye |
| 05/17/1989 | EP0315901A2 Tetraindolyl-heptamethine ethers, alcohols and dyestuffs |
| 05/11/1989 | DE3836797A1 Leuco dyes |
| 04/26/1989 | EP0313051A1 Silver halide photographic material |
| 04/26/1989 | EP0313022A1 Silver halide photosensitive material |
| 04/26/1989 | EP0313021A1 Silver halide photographic material |
| 04/19/1989 | EP0312122A1 Tellurazolylidene and tellurazolium dye intermediates |
| 04/18/1989 | CA1252667A1 Infrared sensitive photoconductor composition |
| 04/05/1989 | EP0310080A2 Azulene-squarillic dyes, azulenes as their intermediary products, and optical recording medium |
| 04/05/1989 | EP0310059A2 Optical information recording medium |
| 04/04/1989 | US4818616 Alternate layers of chromophores with electron donor-acceptor pairs reversed |
| 03/21/1989 | US4814265 Containing methane dye |
| 03/01/1989 | EP0304613A1 Benzopyran derivatives |
| 02/28/1989 | US4808719 1H-imidazo[2,3-a]indol-2-ones as color-forming agents |
| 02/22/1989 | EP0304051A2 Nonlinear optically responsive inorganic-organic composite compositions |
| 02/22/1989 | EP0304050A1 Optical information recording medium |
| 02/21/1989 | US4806488 Bonding to a specific binding pair |
| 02/16/1989 | DE3826697A1 Cyanin-verbindungen Cyanine compounds |
| 02/16/1989 | DE3725928A1 Bis-styryl compounds |
| 02/14/1989 | US4804599 Optical sensitizing dyes |
| 02/08/1989 | EP0302441A2 Bis-styryl compounds |
| 02/07/1989 | CA1249821A1 Photographic elements incorporating antihalation and/or acutance dyes |
| 02/01/1989 | EP0301769A2 Radiation-curable compositions and their use for printing and coating |
| 01/24/1989 | US4800154 Silver halide photographic emulsion |
| 01/18/1989 | EP0299435A2 Photographic oxonol colour filter dyes |
| 01/17/1989 | CA1248804A1 Sensitive electrophotographic plates containing squaric acid methine dyes suspended in a binder |
| 01/12/1989 | DE3721850A1 Indoline-carbocyanine dyes |
| 01/11/1989 | EP0298361A1 Liquid detergene containing disulfonated optical brighteners |
| 01/10/1989 | CA1248396A1 Spectrally sensitized silver halide photothermographic material |
| 01/04/1989 | EP0297873A2 Novel polymethine dyes and imaging compositions |
| 01/04/1989 | EP0297872A2 Novel polymethine dyes and UV absorbers and imaging materials for their use |
| 01/04/1989 | EP0297871A2 Novel polymethine dyes and UV absorbers and imaging materials for their use |
| 01/03/1989 | US4795712 Using 1,2-bis/0-aminoaryloxy)ethane-n,n,n*,n*-tetraacetic acid derivative |
| 12/28/1988 | EP0296873A2 Direct positive dimethine cyanine dyes containing 1-aryl-2-heteroaryl indole nucleus |
| 12/27/1988 | US4794045 Langmuir-Blodgett films usable in nonlinear optics |
| 12/21/1988 | EP0295698A2 Silver halide photographic light-sensitive materials |
| 12/14/1988 | EP0295144A1 Optical recording medium |
| 12/14/1988 | EP0294461A1 Solid particle dispersion filter dyes for photographic compositions. |
| 12/07/1988 | EP0294099A2 Colour photothermographic elements |
| 11/30/1988 | EP0292522A1 Colour former manufacture |
| 11/29/1988 | US4788121 Electrostatography |
| 11/23/1988 | EP0292433A2 Cationic compounds |
| 11/23/1988 | EP0292322A2 Dyes suitable for sensitization of photoconductive systems |
| 11/23/1988 | EP0291853A2 Thienon compounds |
| 11/22/1988 | US4786571 Photosensitive member with hydrazone charge transport material |
| 11/17/1988 | EP0291456A2 Polycyclic chromogene azamethine compounds, their preparation and their use |
| 11/15/1988 | US4785088 Pigments and their preparation |
| 11/02/1988 | EP0289122A1 Unsaturated derivatives of methylene dianiline |
| 10/26/1988 | EP0288261A1 Infra-red sensitising dyes for silver halide |
| 10/26/1988 | EP0288076A2 Infrared filter dyes for photographic elements |
| 10/25/1988 | CA1243524A1 Narrow band light absorbing filter |
| 10/18/1988 | US4778619 Substituted indigo dyes having improved solubilities |
| 10/12/1988 | EP0286402A2 Calcium complexing dyes and their use in analytical compositions, elements and methods |
| 10/12/1988 | EP0285782A1 Dry toners containing methine fanal pigments |
| 09/28/1988 | EP0284560A2 Disperse dyes containing a tricyanovinyl group |
| 09/21/1988 | CN88100324A Lamination of transparent or translucent materials using ionic dye-counter ion complexes |
| 09/20/1988 | US4772541 Sensitive at longer wavelengths |
| 09/14/1988 | EP0282448A2 Pyrazoline compounds |
| 09/13/1988 | US4770984 Motion picture projection film; sharpness |
| 09/13/1988 | US4770973 Readable by optical devices and fixed by light |
| 08/25/1988 | DE3704263A1 IR methine dye |
| 08/03/1988 | EP0277034A2 Lamination of two substrates |
| 08/02/1988 | US4761365 Pyrazolone, cyanine dyes |
| 07/20/1988 | EP0275219A1 Langmuir-Blodgett films for use in non-linear optics |
| 07/20/1988 | EP0275139A2 Assay method using particles with associated fluorescer |
| 07/20/1988 | EP0274723A1 Filter dye for photographic element |
| 07/12/1988 | US4756995 Support, emulsion layer, dye, rhodium desensitizer |
| 07/12/1988 | US4756987 Optical recording medium |
| 06/30/1988 | WO1988004794A1 Solid particle dispersion filter dyes for photographic compositions |
| 06/21/1988 | US4752548 Light-sensitive bisazulenium salt compound compositions and electrophotographic photoreceptors formed therewith |
| 06/16/1988 | WO1988004296A1 Colour former manufacture |
| 06/14/1988 | US4751309 Methine dyes and preparation thereof |
| 06/14/1988 | US4751178 Substrate which produces aminostyrylquinolinium dye-colorimetric analysis |
| 06/14/1988 | US4751102 Radiation-curable ink and coating compositions containing ionic dye compounds as initiators |
| 06/14/1988 | US4750228 Brilliant, intense, lightfast dyes for polyesters |
| 06/08/1988 | EP0270489A1 Anionic cyclo-diylidene compounds, their preparation and their use in detergents as shade dyestuffs |
| 05/31/1988 | US4748148 Recording system utilizing phthalide derivatives as colorless chromogenic material |
| 05/04/1988 | CN87209029U Mathematics learning device with compass and chessboard |
| 05/03/1988 | US4742523 Semi-passive Q-switch |
| 04/19/1988 | US4738908 Photothermal transducing type of recording medium |
| 04/13/1988 | CN86105748A Hanging demonstration chart of hydrostatic and mechanical transmission |
| 03/15/1988 | US4731793 Dye laser |
| 03/09/1988 | EP0258856A2 Dye transfer method |
| 03/02/1988 | EP0258180A2 Disperse dyes |
| 02/16/1988 | US4725685 Yellow |
| 02/16/1988 | US4725574 Photostability |