Inventor · disambiguated record
Hartwig Ruell
Also filed as: PEKAU DIETLIND · RUELL HARTWIG · RUELL HARTWIG E
21 granted patents·1,588 citations·filing 1973–1984
97Inventor score
Top patents by PatentIndex Score
21 records- 0198US4394773AFingerprint sensorSIEMENS CORP·Filed 1980·Granted Jul 19, 1983·280 cites·19 claims
- 0296US4368979AAutomobile identification systemSIEMENS CORP·Filed 1980·Granted Jan 18, 1983·188 cites·27 claims
- 0396US4014602AIdentification card having a hologram superimposed on printed dataSIEMENS AG·Filed 1976·Granted Mar 29, 1977·96 cites·26 claims
- 0495US4356396AFiber optical measuring device with compensating propertiesSIEMENS CORP·Filed 1980·Granted Oct 26, 1982·65 cites·13 claims
- 0594US4449189APersonal access control system using speech and face recognitionSIEMENS CORP·Filed 1981·Granted May 15, 1984·209 cites·13 claims
- 0691US4532508APersonal authentication systemSIEMENS CORP RES & SUPPORT·Filed 1983·Granted Jul 30, 1985·159 cites·4 claims
- 0791US4171766AFalsification-proof identification card having a Lippmann-Bragg hologramSIEMENS AG·Filed 1977·Granted Oct 23, 1979·44 cites·3 claims
- 0890US4269473AIdentification card with a hologram and a process for the production thereofSIEMENS AG·Filed 1979·Granted May 26, 1981·72 cites·29 claims
- 0984US4428670AFingerprint sensing device for deriving an electric signalSIEMENS CORP·Filed 1981·Granted Jan 31, 1984·79 cites·17 claims
- 1084US4340300AInput sensor unit for a fingerprint identification systemSIEMENS CORP·Filed 1980·Granted Jul 20, 1982·67 cites·3 claims
- 1183US4586195AMicrophone range finderSIEMENS CORP RES & SUPPORT·Filed 1984·Granted Apr 29, 1986·48 cites·9 claims
- 1282US4358677ATransducer for fingerprints and apparatus for analyzing fingerprintsSIEMENS CORP·Filed 1980·Granted Nov 9, 1982·73 cites·7 claims
- 1380US4385831ADevice for investigation of a finger reliefSIEMENS CORP·Filed 1980·Granted May 31, 1983·56 cites·7 claims
- 1478US3947640AMethod and device for recording data as holograms in a multi-channel storage tapeSIEMENS AG·Filed 1974·Granted Mar 30, 1976·19 cites·1 claims
- 1575US3936140AArrangement for sequential data storageSIEMENS AG·Filed 1974·Granted Feb 3, 1976·14 cites·3 claims
- 1671US4427881ASensor device for measuring a physical parameterSIEMENS CORP·Filed 1981·Granted Jan 24, 1984·28 cites·4 claims
- 1766US4355238ALiquid level indicatorSIEMENS CORP·Filed 1981·Granted Oct 19, 1982·19 cites·10 claims
- 1865US4175823AProcess for holographic recording of data in the form of electrical signalsSIEMENS AG·Filed 1976·Granted Nov 27, 1979·16 cites·1 claims
- 1961US4336998AFingerprint transducer and reading apparatusSIEMENS CORP·Filed 1980·Granted Jun 29, 1982·46 cites·14 claims
- 2059US4135251AMethod for coded sequential non-coherent, redundant optical data-storageSIEMENS AG·Filed 1973·Granted Jan 16, 1979·10 cites·5 claims
- 2129US3944321ARecording unidimensional holograms with reduced positional sensitivity during readoutSIEMENS AG·Filed 1974·Granted Mar 16, 1976·0 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →