Inventor · disambiguated record
Walter Heitmann
Also filed as: HEITMANN WALTER
15 granted patents·1 pending application·211 citations·filing 1988–2002
93Inventor score
Files withDEUTSCHE TELEKOM AG6KALI CHEMIE PHARMA GMBH3ELECTRONIC PRODUCTION PARTNERS1HERAEUS QUARZGLAS1HERAEUS SCHOTT QUARZSCHMELZE1
Top patents by PatentIndex Score
16 records- 0186US5609666AProcess of producing preforms for silica glass optical waveguides while flowing gas through a tubular substrateHERAEUS QUARZGLAS·Filed 1993·Granted Mar 11, 1997·37 cites·7 claims
- 0284US5291514AHeater autotone control apparatus and methodIBM·Filed 1991·Granted Mar 1, 1994·31 cites·16 claims
- 0376US5390266AOptical elementELECTRONIC PRODUCTION PARTNERS·Filed 1993·Granted Feb 14, 1995·61 cites·33 claims
- 0470US4965369AMethod for preparing indole carboxylic acid derivativesKALI CHEMIE PHARMA GMBH·Filed 1990·Granted Oct 23, 1990·15 cites·17 claims
- 0560US6975800B2Fused silica-based optical waveguide and method for its manufactureDEUTSCHE TELEKOM AG·Filed 2001·Granted Dec 13, 2005·2 cites·4 claims
- 0657US6490399B1Glass for optical waveguides or the likeTELEKOM DEUTSCHE·Filed 1998·Granted Dec 3, 2002·20 cites·14 claims
- 0755US6760513B1Method using photonic crystals for the dispersion compensation of optical signals of different wavelengths which are transmitted togetherDEUTSCHE TELEKOM AG·Filed 2000·Granted Jul 6, 2004·6 cites·8 claims
- 0854US7359605B2Photonic crystalsDEUTSCHE TELEKOM AG·Filed 2002·Granted Apr 15, 2008·4 cites·10 claims
- 0950US5324732ACrystalline fumaric acid salts of 9,9-alkylene-3,7-diazabicyclononane compounds and pharmaceutical compositions containing themKALI CHEMIE PHARMA GMBH·Filed 1992·Granted Jun 28, 1994·9 cites·7 claims
- 1049US6501894B2Plastic optical fiberFiled 2001·Granted Dec 31, 2002·2 cites·7 claims
- 1145US6067396APhysical-contact optical fiber connectorDEUTSCHE TELEKOM AG·Filed 1998·Granted May 23, 2000·11 cites·12 claims
- 1241US6786991B1Method for manufacturing preforms for polymer optical fibersDEUTSCHE TELEKOM AG·Filed 2000·Granted Sep 7, 2004·0 cites·22 claims
- 1338US6041156AOptical connectionDEUTSCHE TELEKOM AG·Filed 1998·Granted Mar 21, 2000·7 cites·10 claims
- 1436US4915474ATransmission line for optical radiation and applications thereofHERAEUS SCHOTT QUARZSCHMELZE·Filed 1988·Granted Apr 10, 1990·6 cites·8 claims
- 1535US2004114860A1Optical system for injection of light from a light source into a mediumFiled 2002·Application pending·0 cites
- 1627US5175347AProcess for preparing cis-dihydronopolKALI CHEMIE PHARMA GMBH·Filed 1991·Granted Dec 29, 1992·0 cites·4 claims
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