Inventor · disambiguated record
Ren Ishikawa
Also filed as: ISHIKAWA REN
17 granted patents·15 pending applications·69 citations·filing 2002–2025
91Inventor score
Top patents by PatentIndex Score
32 records- 0193US7347397B2Reel and recording tape cartridgeFUJIFILM CORP·Filed 2007·Granted Mar 25, 2008·17 cites·30 claims
- 0289US7562842B2ReelFUJIFILM CORP·Filed 2007·Granted Jul 21, 2009·12 cites·8 claims
- 0389US7523887B2Reel and recording tape cartridgeFUJIFILM CORP·Filed 2007·Granted Apr 28, 2009·11 cites·10 claims
- 0486US7881013B2Recording tape cartridgeFUJIFILM CORP·Filed 2008·Granted Feb 1, 2011·7 cites·8 claims
- 0580US7201341B2Recording tape cartridgeFUJIFILM CORP·Filed 2006·Granted Apr 10, 2007·4 cites·12 claims
- 0676US8177158B2Reel and recording tape cartridgeISHIKAWA REN·Filed 2008·Granted May 15, 2012·4 cites·16 claims
- 0774US7232088B2Reel and recording tape cartridgeFUJIFILM CORP·Filed 2006·Granted Jun 19, 2007·2 cites·11 claims
- 0872US7293650B2Tape cassette storage case having a bumper portionFUJIFILM CORP·Filed 2005·Granted Nov 13, 2007·2 cites·7 claims
- 0971US7954750B2Reel and recording tape cartridgeFUJIFILM CORP·Filed 2009·Granted Jun 7, 2011·2 cites·7 claims
- 1061US12014756B2Tape reel, magnetic tape cartridge, and magnetic tape driveFUJIFILM CORP·Filed 2023·Granted Jun 18, 2024·0 cites·13 claims
- 1161US6992861B2Head suspension for swing arm actuatorFUJITSU LTD·Filed 2002·Granted Jan 31, 2006·4 cites·14 claims
- 1261US2009078809A1Reel and method of designing sameFUJIFILM CORP·Filed 2008·Application pending·0 cites
- 1361US2023302763A1FilmFUJIFILM CORP·Filed 2023·Application pending·0 cites
- 1460US12374363B2Magnetic tape device and method of operating magnetic tape deviceFUJIFILM CORP·Filed 2023·Granted Jul 29, 2025·0 cites·13 claims
- 1558US7913946B2Insert body, reel, and recording tape cartridgeFUJIFILM CORP·Filed 2007·Granted Mar 29, 2011·0 cites·8 claims
- 1658US2008093493A1ReelFUJIFILM CORP·Filed 2007·Application pending·0 cites
- 1757US7644886B2ReelFUJIFILM CORP·Filed 2008·Granted Jan 12, 2010·1 cites·7 claims
- 1857US7066421B2Recording tape cartridgeFUJI PHOTO FILM CO LTD·Filed 2004·Granted Jun 27, 2006·3 cites·19 claims
- 1956US2025187296A1Water-stop filmFUJIFILM CORP·Filed 2025·Application pending·0 cites
- 2055US2023039137A1Film and water stopping tapeFUJIFILM CORP·Filed 2022·Application pending·0 cites
- 2155US2023050406A1Film and water stopping tapeFUJIFILM CORP·Filed 2022·Application pending·0 cites
- 2253US2006043227A1Reel and method of designing sameIINO WATARU·Filed 2005·Application pending·0 cites
- 2352US2009224091A1Reel and recording tape cartridgeFUJIFILM CORP·Filed 2009·Application pending·0 cites
- 2448US2007063085A1Reel, recording tape cartridge, metal mold and method for molding reelFUJI PHOTO FILM CO LTD·Filed 2006·Application pending·0 cites
- 2547US2009084880A1Magnetic tape reel and magnetic tape cartridgeFUJIFILM CORP·Filed 2008·Application pending·0 cites
- 2647US2010320643A1ReelFUJIFILM CORP·Filed 2010·Application pending·0 cites
- 2745US2023129110A1Magnetic tape device, method of operating magnetic tape device, and magnetic tapeFUJIFILM CORP·Filed 2022·Application pending·0 cites
- 2844US12112770B2Magnetic tape cartridge, magnetic tape drive, tension control method, method of handling magnetic tape, and programFUJIFILM CORP·Filed 2023·Granted Oct 8, 2024·0 cites·16 claims
- 2944US2023127017A1Magnetic tape drive and method of operating magnetic tape driveFUJIFILM CORP·Filed 2022·Application pending·0 cites
- 3043US2023142229A1Magnetic tape device and method of operating magnetic tape deviceFUJIFILM CORP·Filed 2023·Application pending·0 cites
- 3139US8123158B2Reel and recording tape cartridgeISHIKAWA REN·Filed 2010·Granted Feb 28, 2012·0 cites·14 claims
- 3239US2003227718A1Suspension and disk unitFiled 2003·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →