Inventor · disambiguated record
Kiyokazu Tohma
Also filed as: TOHMA KIYOKAZU
32 granted patents·1 pending application·657 citations·filing 1987–2003
97Inventor score
Files withMATSUSHITA ELECTRIC INDUSTRIAL CO LTD32
Top patents by PatentIndex Score
33 records- 0198US6347016B1Master information carrier, process for producing the carrier, and method and apparatus for recording master information signal on magnetic recording medium by using the carrierMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1997·Granted Feb 12, 2002·292 cites·16 claims
- 0290US6529341B1Magnetic recording/reproduction device using preformat informationMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1998·Granted Mar 4, 2003·67 cites·29 claims
- 0389US6606208B2Master information carrier, method for producing the carrier, method and apparatus for writing information into magnetic record medium using the carrierMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Aug 12, 2003·18 cites·11 claims
- 0486US6567227B2Master information carrier, method for producing the carrier, method and apparatus for writing information into magnetic record medium using the carrierMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted May 20, 2003·14 cites·9 claims
- 0585US6466385B1Method and apparatus of forming a magnetic disk with a servo sector and a data sector on a spiral trackMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2000·Granted Oct 15, 2002·25 cites·6 claims
- 0684US6606209B2Master information carrier, method for producing the carrier, method and apparatus for writing information into magnetic record medium using the carrierMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Aug 12, 2003·11 cites·5 claims
- 0782US6961196B2Master information carrier, method for producing the carrier, method and apparatus for writing information into magnetic record medium using the carrierMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Nov 1, 2005·9 cites·23 claims
- 0877US6242085B1Magnetic recording medium and method for producing the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1998·Granted Jun 5, 2001·30 cites·16 claims
- 0976US6858329B2Master disc and method for manufacturing magnetic disc using the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Feb 22, 2005·11 cites·11 claims
- 1072US6587290B2Master information carrier, method for producing the carrier, and method apparatus for writing information into magnetic record medium using the carrierMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2002·Granted Jul 1, 2003·5 cites·8 claims
- 1169US6898032B2Method and apparatus for magnetic printingMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted May 24, 2005·6 cites·7 claims
- 1269US6590727B2Master information carrier, method for producing the carrier, method and apparatus for writing information into magnetic record medium using the carrierMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2001·Granted Jul 8, 2003·4 cites·12 claims
- 1366US5851660AMethod of fabricating a thin-film magnetic recording medium and thin-film magnetic recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1996·Granted Dec 22, 1998·19 cites·17 claims
- 1463US5679410AContinuous fabrication of thin film magnetic recording medium with vacuum depositionMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1995·Granted Oct 21, 1997·17 cites·10 claims
- 1561US6858328B1Master information supportMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Feb 22, 2005·15 cites·14 claims
- 1661US6611388B1Master information magnetic recorderMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Aug 26, 2003·15 cites·4 claims
- 1756US5534324AMagnetic recording medium and method for producing the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1993·Granted Jul 9, 1996·17 cites·8 claims
- 1855US5418059AMagnetic recording medium and method for producing the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1993·Granted May 23, 1995·15 cites·4 claims
- 1953US5472506AMethod and apparatus for producing magnetic recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1995·Granted Dec 5, 1995·9 cites·12 claims
- 2048US5087476AMethod of producing thin filmMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1990·Granted Feb 11, 1992·13 cites·13 claims
- 2146US6909565B2Magnetic transfer method and magnetic transfer apparatusMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 2003·Granted Jun 21, 2005·0 cites·13 claims
- 2246US6714367B1Master information medium and method of master information recordingMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1999·Granted Mar 30, 2004·7 cites·15 claims
- 2343US5298282AProduction of magnetic recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1993·Granted Mar 29, 1994·5 cites·5 claims
- 2443US5202149AMethod for making a magnetic recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1992·Granted Apr 13, 1993·5 cites·6 claims
- 2541US2003236974A1Content receiving and distributing systemFiled 2003·Application pending·0 cites
- 2640US5665460AMagnetic recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1995·Granted Sep 9, 1997·7 cites·16 claims
- 2739US5458914AMethod for producing magnetic recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1995·Granted Oct 17, 1995·3 cites·1 claims
- 2838US5554440AMagnetic recording medium and method for producing the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1993·Granted Sep 10, 1996·6 cites·6 claims
- 2935US5549936AManufacturing method of magnetic recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1994·Granted Aug 27, 1996·2 cites·21 claims
- 3034US5427869AMagnetic recording medium and method for producing the sameMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1993·Granted Jun 27, 1995·2 cites·1 claims
- 3134US4999220AMethod for manufacturing perpendicular magnetic recording mediumMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1989·Granted Mar 12, 1991·5 cites·11 claims
- 3229US5433999AMagnetic recording medium comprising specific backcoat layerMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1993·Granted Jul 18, 1995·0 cites·6 claims
- 3329US4859501AMethod for providing a perpendicular recording medium for use with a ring-shaped recording and reproducing headMATSUSHITA ELECTRIC INDUSTRIAL CO LTD·Filed 1987·Granted Aug 22, 1989·3 cites·14 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →