Inventor · disambiguated record
Johannes Platzek
Also filed as: NIEDBALLA LEGAL REPRESENTATIVE · PLATZEK JOHANNES
127 granted patents·36 pending applications·1,451 citations·filing 1990–2025
99Inventor score
Top patents by PatentIndex Score
163 records- 0196US5364614ACascade polymer bound chelating compounds, their chelates and conjugates, processes for their production, and pharmaceutical agents containing themSCHERING AG·Filed 1990·Granted Nov 15, 1994·60 cites·11 claims
- 0294US10759758B2Polymorphic form of N-{6-(hydroxypropan-2-yl)-2-[2-(methylsulphonyl)ethyl]-2H-indazol-5-yl}-6-(trifluoromethyl)pyridine-2-carboxamideBayer Pharma AG·Filed 2017·Granted Sep 1, 2020·17 cites·10 claims
- 0393US12478696B2Gadolinium chelate compounds for use in magnetic resonance imagingBayer Pharma AG·Filed 2024·Granted Nov 25, 2025·1 cites·14 claims
- 0493US6039931ADerivatized DTPA complexes, pharmaceutical agents containing these compounds, their use, and processes for their productionSCHERING AG·Filed 1994·Granted Mar 21, 2000·70 cites·35 claims
- 0593US5650136ACascade polymer bound complexing compounds, their complexes and conjugates, processes for their production, and pharmaceutical agents containing themSCHERING AG·Filed 1994·Granted Jul 22, 1997·39 cites·14 claims
- 0692US12054481B2Method for the preparation of (4S)-4-(4-cyano-2-methoxyphenyl)-5-ethoxy-2,8-dimethyl-1,4-dihydro-1-6-naphthyridine-3-carbox-amide by racemate separation by means of diastereomeric tartaric acid estersBAYER AG·Filed 2019·Granted Aug 6, 2024·3 cites·34 claims
- 0792US5820849ACascade polymer complexes, process for their production and pharamceutical agents containing said complexesSCHERING AG·Filed 1996·Granted Oct 13, 1998·73 cites·14 claims
- 0892US5277895AMono-n-substituted 1,4,7,10-tetraazacyclododecane derivatives, process for their production and pharmaceutical agents containing these derivativesSCHERING AG·Filed 1991·Granted Jan 11, 1994·48 cites·6 claims
- 0991US11491245B2Gadolinium chelate compounds for use in magnetic resonance imagingBayer Pharma AG·Filed 2020·Granted Nov 8, 2022·2 cites·12 claims
- 1090US10399977B2Process for preparing (4S)- 4-(4-cyano-2-methoxyphenyl)-5-ethoxy-2,8-dimethyl-1,4-dihydro-1,6-naphthyridine-3-carboxamide and purification thereof for use as a pharmaceutical active ingredientBayer Pharma AG·Filed 2018·Granted Sep 3, 2019·7 cites·24 claims
- 1190US5695739ADerivatized DTPA complexes, pharmaceutical agents containing these compounds, their use, and processes for their productionSCHERING AG·Filed 1994·Granted Dec 9, 1997·44 cites·20 claims
- 1289US12448381B1Method for the preparation of (4S)-4-(4-cyano-2-methoxyphenyl)-5-ethoxy-2,8-dimethyl-1,4-dihydro-1-6-naphthyridine-3-carbox-amide by racemate separation by means of diastereomeric tartaric acid estersBAYER AG·Filed 2025·Granted Oct 21, 2025·0 cites·20 claims
- 1389US9447053B2Process for the preparation of calcobutrolPLATZEK JOHANNES·Filed 2010·Granted Sep 20, 2016·10 cites·13 claims
- 1488US10722601B2Gadolinium chelate compounds for use in magnetic resonance imagingBayer Pharma AG·Filed 2018·Granted Jul 28, 2020·2 cites·16 claims
- 1588US6193950B1Cascade polymer bound complexing compounds, their complexes and conjugates, processes for their production, and pharmaceutical agents containing themSCHERING AG·Filed 2000·Granted Feb 27, 2001·16 cites·18 claims
- 1688US5403572AMacrocyclic polyaza compounds containing 5 or 6 membered rings, process for producing them and pharmaceutical media containing themSCHERING AG·Filed 1994·Granted Apr 4, 1995·30 cites·60 claims
- 1787US5798092ADerivatized DTPA complexes pharmaceutical agents containing these compounds, their use, and processes for their productionSCHERING AG·Filed 1995·Granted Aug 25, 1998·37 cites·35 claims
- 1886US10501437B2Crystalline forms of N-[2-(3-Hydroxy-3-methylbutyl)-6-(2-hydroxypropan-2-yl)-2H-indazol-5-yl]-6-(trifluoromethyl)pyridine-2-carboxamideBayer Pharma AG·Filed 2017·Granted Dec 10, 2019·6 cites·12 claims
- 1986US6933385B2Protected 3,5-dihydroxy-2,2-dimethyl-valeroamides for the synthesis of epothilones and derivatives and process for the production and the useSCHERING AG·Filed 2002·Granted Aug 23, 2005·16 cites·22 claims
- 2085US6818203B2Use of perfluoroalkyl-containing metal complexes as contrast media in MR-imaging for visualization of plaque, tumors and necrosesSCHERING AG·Filed 2001·Granted Nov 16, 2004·14 cites·35 claims
- 2185US6447749B1Perfluoro-alkyl containing dye molecules and galencial formulationsSCHERING AG·Filed 2000·Granted Sep 10, 2002·17 cites·20 claims
- 2285US6194566B1Process for the production of metalloporphyrin-metal complex conjugatesSCHERING AG·Filed 1999·Granted Feb 27, 2001·32 cites·28 claims
- 2385US5386028AProcess for the production of N-β-hydroxyalkyl-tri-N-carboxyalkyl-1,4,7,10-tetraazacyclododecane and N-β-hydroxyalkyl-tri-N-carboxyalkyl-1,4,8,11-tetraazacyclotetradecane derivatives and their metal complexesSCHERING AG·Filed 1993·Granted Jan 31, 1995·33 cites·16 claims
- 2484US10501417B2Synthesis of indazolesBayer Pharma AG·Filed 2017·Granted Dec 10, 2019·5 cites·22 claims
- 2584US10137209B2Gadolinium chelate compounds for use in magnetic resonance imagingBayer Pharma AG·Filed 2016·Granted Nov 27, 2018·2 cites·13 claims
- 2684US5410043AProcess for the production of mono-N-substituted tetraaza macrocyclesSCHERING AG·Filed 1993·Granted Apr 25, 1995·25 cites·20 claims
- 2783US10633365B2Synthesis of indazolesBayer Pharma AG·Filed 2017·Granted Apr 28, 2020·4 cites·28 claims
- 2883US10336749B2Method for the preparation of (4S)-4-(4-cyano-2-methoxyphenyl)-5-ethoxy-2,8-dimethyl-1,4-dihydro-1-6-naphthyridine-3-carboxamide and the purification thereof for use as an active pharmaceutical ingredientBayer Pharma AG·Filed 2016·Granted Jul 2, 2019·3 cites·13 claims
- 2983US6461587B1Perfluoroalkylamides, their production and their use in diagnosisSCHERING AG·Filed 2000·Granted Oct 8, 2002·16 cites·19 claims
- 3083US5871709AMacrocyclic compounds as complexing compounds or agents, complexes of metal ions therewith and use thereof as contrast media for diagnostics and therapeuticsSCHERING AG·Filed 1994·Granted Feb 16, 1999·24 cites·14 claims
- 3182US10059707B2Method for the preparation of (4S)-4-(4-cyano-2-methoxyphenyl)-5-ethoxy-2,8-dimethyl-1,4-dihydro- 1-6-naphthyridine-3-carbox-amide and the purification thereof for use as an active pharmaceutical ingredientBayer Pharma AG·Filed 2015·Granted Aug 28, 2018·3 cites·24 claims
- 3282US6576222B2Cascade polymer bound complexing compounds, their complexes and conjugates, process for their production and pharmaceutical agents containing themSCHERING AG·Filed 2001·Granted Jun 10, 2003·9 cites·7 claims
- 3382US5849259A3-,8-substituted deuteroporphyrin derivatives, pharmaceutical agents containing the latter and process for their productionDIAGNOSTIKFORSCHUNG INST·Filed 1993·Granted Dec 15, 1998·26 cites·14 claims
- 3481US10435417B2Preparation of high-purity gadobutrolBAYER IP GMBH·Filed 2017·Granted Oct 8, 2019·3 cites·20 claims
- 3581US8263040B2Metal chelates having a perfluorinated PEG radical, processes for their preparation, and their usePLATZEK JOHANNES·Filed 2007·Granted Sep 11, 2012·2 cites·31 claims
- 3681US5980864A1,4,7,10-tetraazacyclododecane butyltriols, processes for their production and pharmaceutical agents containing themSCHERING AKTIENGELLSELLSCHAFT·Filed 1991·Granted Nov 9, 1999·50 cites·12 claims
- 3781US5876698AMacrocyclic polymer complexing agents, their complexes, process for their production and pharmaceutical agents containing these compoundsSCHERING AG·Filed 1992·Granted Mar 2, 1999·65 cites·24 claims
- 3881US5679852AProcess for the production of DTPA-monoamides of the central carboxylic acid and their use as pharmaceutical agentsSCHERING AG·Filed 1995·Granted Oct 21, 1997·24 cites·14 claims
- 3981US5676923ASubstituted DTPA monoamides of the central carboxylic acid group and their metal complexesSCHERING AG·Filed 1995·Granted Oct 14, 1997·24 cites·15 claims
- 4081US2024376103A1Method for the preparation of (4s)-4-(4-cyano-2-methoxyphenyl)-5-ethoxy-2,8-dimethyl-1,4-dihydro-1-6-naphthyridine-3-carbox-amide by racemate separation by means of diastereomeric tartaric acid estersBAYER AG·Filed 2024·Application pending·0 cites
- 4180US6136841A3-, 8-substituted deuteroporphyrin derivatives, pharmaceutical agents that contain the latter, process for their production and their use in photodynamic therapy and MRI diagnosisSCHERING AG·Filed 1999·Granted Oct 24, 2000·25 cites·20 claims
- 4280US6114321APorphyrin derivatives, pharmaceutical agents that contain the latter, and their use in photodynamic therapy and MRI diagnosisSCHERING AG·Filed 1999·Granted Sep 5, 2000·57 cites·21 claims
- 4379US10793532B2Method for producing the crystalline form of modification a of calcobutrolBayer Pharma AG·Filed 2017·Granted Oct 6, 2020·1 cites·8 claims
- 4479US7618957B2Perfluoroalkyl-containing complexes, process for their production as well as their useBAYER SCHERING PHARMA AG·Filed 2006·Granted Nov 17, 2009·1 cites·6 claims
- 4579US5690909AFluorine-containing macrocyclic metal complexesSCHERING AG·Filed 1994·Granted Nov 25, 1997·19 cites·15 claims
- 4679US2023113481A1New gadolinium chelate compounds for use in magnetic resonance imagingBayer Pharma AG·Filed 2022·Application pending·0 cites
- 4778US10392384B2Method for the preparation of (4S)-4-(4-cyano-2-methoxyphenyl)-5-ethoxy-2,8-dimethyl-1,4-dihydro-1-6-naphthyridine-3-carboxamide and recovery of (4S)-4-(4-cyano-2-methoxyphenyl)-5-ethoxy-2,8-dimethyl-1,4-dihydro-1-6-naphthyridine-3-carboxamide by electrochemical methodsBayer Pharma AG·Filed 2016·Granted Aug 27, 2019·4 cites·8 claims
- 4878US10072027B2Preparation of high-purity gadobutrolPLATZEK JOHANNES·Filed 2012·Granted Sep 11, 2018·4 cites·8 claims
- 4978US6916461B2Metal complexes that contain perfluoroalkyl, process for their production and their use in NMR diagnosisSCHERING AG·Filed 2002·Granted Jul 12, 2005·7 cites·7 claims
- 5078US6676928B2Perfluoroalkyl-containing complexes with polar radicals, process for their production and their useSCHERING AG·Filed 2001·Granted Jan 13, 2004·9 cites·29 claims
Showing the top 50 of 163 patent records by PatentIndex Score.
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