Inventor · disambiguated record
Stephan J. W. Platzer
Also filed as: PLATZER STEPHAN · PLATZER STEPHAN J · PLATZER STEPHAN J W
60 granted patents·2 pending applications·744 citations·filing 1982–2012
99Inventor score
Top patents by PatentIndex Score
62 records- 0193US4808508ANegative working color proofing process comprising diazo compound and polyvinyl acetal/polyvinyl alcohol/polyvinyl acetate resinHOECHST CELANESE CORP·Filed 1986·Granted Feb 28, 1989·76 cites·23 claims
- 0286US4650738ANegative working diazo color proofing methodHOECHST CO AMERICAN·Filed 1984·Granted Mar 17, 1987·44 cites·19 claims
- 0383US4902594ATransferrable, thermoplastic, antiblocking/adhesive protecting layer for imagesHOECHST CELANESE CORP·Filed 1988·Granted Feb 20, 1990·33 cites·11 claims
- 0483US4895787APhotopolymerizable positive working, peel developable, single sheet color proofing systemHOECHST CELANESE CORP·Filed 1988·Granted Jan 23, 1990·36 cites·28 claims
- 0582US4719169AProtective coating for imagesHOECHST CELANESE CORP·Filed 1986·Granted Jan 12, 1988·39 cites·19 claims
- 0682US4659642APositive working naphthoquinone diazide color proofing transfer processHOECHST CO AMERICAN·Filed 1984·Granted Apr 21, 1987·37 cites·18 claims
- 0781US6458503B1Fluorinated aromatic acetal polymers and photosensitive compositions containing such polymersKODAK POLYCHROME GRAPHICS LLC·Filed 2001·Granted Oct 1, 2002·22 cites·28 claims
- 0881US4999266AProtected color image on substrate with thermal adhesive and antiblocking overlayersHOECHST CELANESE CORP·Filed 1989·Granted Mar 12, 1991·52 cites·12 claims
- 0980US5282918AApparatus for separating and drawing off a film laminated on a carrier materialHOECHST AG·Filed 1992·Granted Feb 1, 1994·40 cites·29 claims
- 1078US7892386B2Radiation-curable fluorescing compositionsDYMAX CORP·Filed 2007·Granted Feb 22, 2011·4 cites·37 claims
- 1170US7802910B2Light guide exposure deviceDYMAX CORP·Filed 2008·Granted Sep 28, 2010·7 cites·24 claims
- 1270US5049476APhotopolymerizable, positive working, peel developable, single sheet color proofing systemHOECHST CELANESE CORP·Filed 1990·Granted Sep 17, 1991·24 cites·30 claims
- 1365US5900345ASurfactant in precoat for lithographic platesKODAK POLYCHROME GRAPHICS LLC·Filed 1997·Granted May 4, 1999·29 cites·18 claims
- 1465US4427500AMethod for producing an aluminum support useful for lithographyHOECHST CO AMERICAN·Filed 1982·Granted Jan 24, 1984·18 cites·9 claims
- 1562US4581996AAluminum support useful for lithographyHOECHST CO AMERICAN·Filed 1982·Granted Apr 15, 1986·16 cites·9 claims
- 1660US4948693APositive working color proofing system comprising polyvinyl acetal/polyvinyl alcohol/polyvinyl acetate resinHOECHST CELANESE CORP·Filed 1988·Granted Aug 14, 1990·15 cites·29 claims
- 1758US4935331APigment transfer to photopolymerizable positive-working imaging systemHOECHST CELANESE CORP·Filed 1988·Granted Jun 19, 1990·13 cites·22 claims
- 1857US5094931AImage transfer to diverse paper stocksHOECHST CELANESE CORP·Filed 1990·Granted Mar 10, 1992·14 cites·20 claims
- 1957US4751166ANegative working diazo color proofing methodHOECHST CELANESE CORP·Filed 1986·Granted Jun 14, 1988·13 cites·17 claims
- 2056US5108868ANegative working, peel developable, single sheet color proofing methodHOECHST CELANESE CORP·Filed 1988·Granted Apr 28, 1992·12 cites·23 claims
- 2155US8052829B2Photopolymerizable compositions containing an oxonol dyeDYMAX CORP·Filed 2007·Granted Nov 8, 2011·0 cites·26 claims
- 2254US5053310ANegative working diazo resin color proofing material comprising polyvinyl acetal/polyvinyl, alcohol/polyvinyl acetate resinHOECHST CELANESE CORP·Filed 1990·Granted Oct 1, 1991·12 cites·22 claims
- 2354US4910120APreparation of receiver sheet materials for peel developable, single sheet color proofing systemHOECHST CELANESE CORP·Filed 1988·Granted Mar 20, 1990·13 cites·20 claims
- 2453US4937168ASolid transfer negative- or positive-working color proofing method on diverse paper stocksHOECHST CELANESE CORP·Filed 1988·Granted Jun 26, 1990·11 cites·23 claims
- 2553US4752346AApparatus and method for separating adherent filmsHOECHST CELANESE CORP·Filed 1987·Granted Jun 21, 1988·12 cites·22 claims
- 2652US5008174AColor proofing system having a graduated layer of resins with different solubilitiesHOECHST CELANESE CORP·Filed 1989·Granted Apr 16, 1991·10 cites·11 claims
- 2750US5192630AImage transfer to diverse paper stocksHOECHST CELANESE CORP·Filed 1991·Granted Mar 9, 1993·10 cites·21 claims
- 2849US6638679B2Photosensitive compositions having mixtures of alkoxy and non-alkoxy diazonium salt containing compoundsKODAK POLYCHROME GRAPHICS LLC·Filed 2001·Granted Oct 28, 2003·2 cites·49 claims
- 2948US5374184APhotopolymerizable material and process for the production of a colored imageHOECHST AG·Filed 1994·Granted Dec 20, 1994·10 cites·20 claims
- 3047US5792588ANegative working, peel developable, single sheet color proofing systemBAYER AG·Filed 1996·Granted Aug 11, 1998·9 cites·17 claims
- 3147US5100757AMethod for forming a colored image on a degradable sheet materialHOECHST CELANESE CORP·Filed 1988·Granted Mar 31, 1992·9 cites·22 claims
- 3246US5545506AMethod of producing an image using a negative working, peel developable, single sheet color proofing systemHOECHST CELANESE CORP·Filed 1992·Granted Aug 13, 1996·7 cites·18 claims
- 3346US5258247APhotoimaged article having a colored image protected by a transparent, flexible nonself supporting layer containing a thermoplastic, antiblocking resinHOECHST CELANESE CORP·Filed 1989·Granted Nov 2, 1993·10 cites·20 claims
- 3444US5534384APhotosensitive material for the production of a multicolored imageHOECHST AG·Filed 1993·Granted Jul 9, 1996·9 cites·20 claims
- 3544US4772533APositive working naphthoquinone diazide color proofing element with polyvinyl acetate adhesive layerHOECHST CO AMERICAN·Filed 1986·Granted Sep 20, 1988·7 cites·16 claims
- 3643US8846981B21,1-di[(alkylphenoxy)ethoxy]cyclohexanesBONHAM JAMES A·Filed 2012·Granted Sep 30, 2014·0 cites·22 claims
- 3743US5478694AProcess for the production of a multicolored image and photosensitive material for carrying out this processHOECHST AG·Filed 1993·Granted Dec 26, 1995·6 cites·11 claims
- 3843US2005277053A1Increased sensitivity, IR, and UV imageable photographic elementsANOCOIL CORP·Filed 2004·Application pending·0 cites
- 3942US5492791APhotosensitive material and method for making color-proofing filmsHOECHST AG·Filed 1995·Granted Feb 20, 1996·7 cites·11 claims
- 4042US5236806APhotopolymerizable, positive working, peel developable, single sheet color proofing systemHOECHST CELANESE CORP·Filed 1991·Granted Aug 17, 1993·6 cites·31 claims
- 4141US6861196B2Photosensitive compositions having mixtures of alkoxy and non-alkoxy diazonium salt containing compoundsKODAK POLYCHROME GRAPHICS LLC·Filed 2003·Granted Mar 1, 2005·0 cites·27 claims
- 4241US5269873AApparatus for peeling-off a film laminated on a carrier materialHOECHST AG·Filed 1992·Granted Dec 14, 1993·9 cites·27 claims
- 4340US5213941ASolid transfer negative- or positive-working color proofing methodHOECHST CELANESE CORP·Filed 1988·Granted May 25, 1993·4 cites·11 claims
- 4439US2005277051A1Increased sensitivity, UV imageable photographic elementsANOCOIL CORP·Filed 2004·Application pending·0 cites
- 4538US7671543B2Light exposure control device and apparatusDYMAX CORP·Filed 2007·Granted Mar 2, 2010·0 cites·26 claims
- 4637US5775977AProcess for the mechanical roughening of the surface of a printing plate substrateAGFA GEVAERT AG·Filed 1996·Granted Jul 7, 1998·6 cites·11 claims
- 4737US5443939ALight-sensitive material for producing a multi-color imageHOECHST AG·Filed 1994·Granted Aug 22, 1995·3 cites·14 claims
- 4837US5039590ACoating positive or negative working color proofing systemHOECHST CELANESE CORP·Filed 1989·Granted Aug 13, 1991·4 cites·14 claims
- 4936US6261734B1Peel-developable single sheet color proofing system with laminated adhesive layersAFGA CORP·Filed 1995·Granted Jul 17, 2001·7 cites·22 claims
- 5034US5725988ASolid transfer negative- or positive-working color proofing elementBAYER AG·Filed 1993·Granted Mar 10, 1998·2 cites·13 claims
Showing the top 50 of 62 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →