Assignee
SONY MAGNESCALE INC
JP·42 granted patents·704 citations·filing 1982–1996
Top patents by PatentIndex Score
42 records- 0194US4676645AOptical instrument for measuring displacementSONY MAGNESCALE INC·Filed 1984·Granted Jun 30, 1987·81 cites·9 claims
- 0285US5016359ALinear scale arrangementSONY MAGNESCALE INC·Filed 1989·Granted May 21, 1991·52 cites·8 claims
- 0382US5366174ATape winding apparatusSONY MAGNESCALE INC·Filed 1993·Granted Nov 22, 1994·35 cites·14 claims
- 0481US5225918AHologram scale, apparatus for making hologram scale, moving member having hologram scale assembled hologram scale and apparatus for making assembled hologram scaleSONY MAGNESCALE INC·Filed 1991·Granted Jul 6, 1993·55 cites·6 claims
- 0580US5325349AHard disc drive and a servo signal writing apparatusSONY MAGNESCALE INC·Filed 1992·Granted Jun 28, 1994·30 cites·15 claims
- 0680US5148403AProduction of prerecorded tape cassettesSONY MAGNESCALE INC·Filed 1991·Granted Sep 15, 1992·29 cites·39 claims
- 0775US4484391AMagnetic scaling deviceSONY MAGNESCALE INC·Filed 1982·Granted Nov 27, 1984·24 cites·10 claims
- 0874US5243280AMagnetic sensor and position detectorSONY MAGNESCALE INC·Filed 1992·Granted Sep 7, 1993·33 cites·3 claims
- 0973US5475209ADisplacement measurement apparatus having first and second servo control circuits and a zone decision circuitSONY MAGNESCALE INC·Filed 1994·Granted Dec 12, 1995·28 cites·6 claims
- 1071US5943639ADisplacement detection apparatus including an error correction systemSONY MAGNESCALE INC·Filed 1995·Granted Aug 24, 1999·29 cites·27 claims
- 1169US5488782AScale plate arrangementSONY MAGNESCALE INC·Filed 1994·Granted Feb 6, 1996·25 cites·12 claims
- 1267US4843729AMounting structure for magnetic linear scale unitSONY MAGNESCALE INC·Filed 1987·Granted Jul 4, 1989·27 cites·16 claims
- 1366US5635833AMagnetic linear scaling device having protective resin tapeSONY MAGNESCALE INC·Filed 1994·Granted Jun 3, 1997·28 cites·9 claims
- 1462US5172250AHologram scale having moisture resistanceSONY MAGNESCALE INC·Filed 1990·Granted Dec 15, 1992·22 cites·7 claims
- 1562US4649648ALinear scaleSONY MAGNESCALE INC·Filed 1985·Granted Mar 17, 1987·22 cites·32 claims
- 1660USD310041SMagnetic measuring scaleSONY MAGNESCALE INC·Filed 1987·Granted Aug 21, 1990·9 cites·1 claims
- 1758US5637868AFixed point detecting device using detection of light diffracted by holographic diffraction gratingsSONY MAGNESCALE INC·Filed 1995·Granted Jun 10, 1997·20 cites·14 claims
- 1855US5706219AInterpolation deviceSONY MAGNESCALE INC·Filed 1996·Granted Jan 6, 1998·16 cites·12 claims
- 1954US5485407AInterpolation device for scale arrangementSONY MAGNESCALE INC·Filed 1993·Granted Jan 16, 1996·15 cites·8 claims
- 2053US4663588ADetector for use for measuring dimensions of an objectSONY MAGNESCALE INC·Filed 1984·Granted May 5, 1987·12 cites·8 claims
- 2151US5499096AOptical instrument and measurement for measuring displacement of scale using different order diffraction of a diffraction gratingSONY MAGNESCALE INC·Filed 1994·Granted Mar 12, 1996·13 cites·13 claims
- 2249US4558312APosition detecting deviceSONY MAGNESCALE INC·Filed 1983·Granted Dec 10, 1985·12 cites·40 claims
- 2346US5663643APosition detecting apparatus using offset calculated from sum of three-phase signalsSONY MAGNESCALE INC·Filed 1995·Granted Sep 2, 1997·13 cites·7 claims
- 2442US4868688AElongated strip storage apparatus and recorder tape duplicator system utilizing endless tape stored in storage apparatusSONY MAGNESCALE INC·Filed 1987·Granted Sep 19, 1989·5 cites·34 claims
- 2541US5363034APosition detector with magnetic scale and magnetic sensor that has magnetic reluctance elements in non-overlapping relationshipSONY MAGNESCALE INC·Filed 1991·Granted Nov 8, 1994·9 cites·4 claims
- 2641US5227926ADuplicator system manageable of life of mother tapeSONY MAGNESCALE INC·Filed 1990·Granted Jul 13, 1993·5 cites·18 claims
- 2739US5164031ATape splicing method and apparatusSONY MAGNESCALE INC·Filed 1991·Granted Nov 17, 1992·7 cites·4 claims
- 2839US4523381AScaling deviceSONY MAGNESCALE INC·Filed 1982·Granted Jun 18, 1985·6 cites·10 claims
- 2938US5383625AReel holder for use in tape winding apparatusSONY MAGNESCALE INC·Filed 1993·Granted Jan 24, 1995·6 cites·18 claims
- 3038US5095390AApparatus for storing and feeding endless tape and recorded tape duplicator system utilizing the sameSONY MAGNESCALE INC·Filed 1989·Granted Mar 10, 1992·4 cites·22 claims
- 3133US5157621ACircuit and method for forming pulse train output in response to carry/borrow output of count pulse trainSONY MAGNESCALE INC·Filed 1990·Granted Oct 20, 1992·3 cites·13 claims
- 3232US5814732ALaser doppler speed measuring apparatusSONY MAGNESCALE INC·Filed 1996·Granted Sep 29, 1998·10 cites·9 claims
- 3331US5521394ACompact displacement detecting system with optical integrated circuit and connector in-line with optical axisSONY MAGNESCALE INC·Filed 1994·Granted May 28, 1996·5 cites·14 claims
- 3430US5154786AMethod of manufacturing an endless tapeSONY MAGNESCALE INC·Filed 1991·Granted Oct 13, 1992·2 cites·2 claims
- 3529US5432443ALinear position detector including a phase shifter and a sample-and-hold circuit for synchronizing a sample pulse period with the reference period of the equilibrium modulated signalSONY MAGNESCALE INC·Filed 1993·Granted Jul 11, 1995·5 cites·8 claims
- 3629USD310045SMagnetic measuring scale accessorySONY MAGNESCALE INC·Filed 1987·Granted Aug 21, 1990·0 cites·1 claims
- 3726US5389189ASplicing tape feeding device for use in a tape splicerSONY MAGNESCALE INC·Filed 1993·Granted Feb 14, 1995·1 cites·5 claims
- 3826US5273196ATape transport apparatusSONY MAGNESCALE INC·Filed 1992·Granted Dec 28, 1993·2 cites·3 claims
- 3926US5151798AHologram scaleSONY MAGNESCALE INC·Filed 1991·Granted Sep 29, 1992·0 cites·6 claims
- 4025US5477333ADisplacement detecting apparatusSONY MAGNESCALE INC·Filed 1994·Granted Dec 19, 1995·4 cites·5 claims
- 4125US5169466AMethod of manufacturing an endless tapeSONY MAGNESCALE INC·Filed 1991·Granted Dec 8, 1992·0 cites·2 claims
- 4224US5909329AHigh-speed video printer with tracking adjustment of slave tapeSONY MAGNESCALE INC·Filed 1995·Granted Jun 1, 1999·0 cites·9 claims
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