Inventor · disambiguated record
Katsumi Ryoke
Also filed as: RYOKE KATSUMI
48 granted patents·2 pending applications·629 citations·filing 1980–2006
98Inventor score
Files withFUJI PHOTO FILM CO LTD50
Top patents by PatentIndex Score
50 records- 0193US5633068AAbrasive tape having an interlayer for magnetic head cleaning and polishingFUJI PHOTO FILM CO LTD·Filed 1995·Granted May 27, 1997·89 cites·6 claims
- 0280US6443827B1Polishing member and process for producing the sameFUJI PHOTO FILM CO LTD·Filed 2000·Granted Sep 3, 2002·21 cites·4 claims
- 0380US4693929AMagnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 1985·Granted Sep 15, 1987·24 cites·23 claims
- 0478US5456734AAbrasive memberFUJI PHOTO FILM CO LTD·Filed 1994·Granted Oct 10, 1995·23 cites·3 claims
- 0577US5573444APolishing methodFUJI PHOTO FILM CO LTD·Filed 1994·Granted Nov 12, 1996·24 cites·2 claims
- 0676US5512350AMagnetic recording medium having a magnetic layer with a specified surface roughness and which contains ferromagnetic powder, binder, and an abrasiveFUJI PHOTO FILM CO LTD·Filed 1995·Granted Apr 30, 1996·36 cites·5 claims
- 0771US5611826AAbrasive tapeFUJI PHOTO FILM CO LTD·Filed 1996·Granted Mar 18, 1997·23 cites·5 claims
- 0870US4546038AMagnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 1983·Granted Oct 8, 1985·21 cites·17 claims
- 0969US4552799AMagnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 1984·Granted Nov 12, 1985·13 cites·11 claims
- 1067US5196265AMagnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 1991·Granted Mar 23, 1993·28 cites·5 claims
- 1163US4554220AMagnetic recording mediaFUJI PHOTO FILM CO LTD·Filed 1983·Granted Nov 19, 1985·11 cites·12 claims
- 1263US4539257AMagnetic recording medium having improved running propertiesFUJI PHOTO FILM CO LTD·Filed 1984·Granted Sep 3, 1985·18 cites·20 claims
- 1362US4886703AMagnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 1988·Granted Dec 12, 1989·12 cites·16 claims
- 1461US5672185AAbrasive memberFUJI PHOTO FILM CO LTD·Filed 1996·Granted Sep 30, 1997·28 cites·5 claims
- 1561US4304852ASilver halide photographic light-sensitive materialFUJI PHOTO FILM CO LTD·Filed 1980·Granted Dec 8, 1981·9 cites·19 claims
- 1658US4803121AMagnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 1987·Granted Feb 7, 1989·10 cites·10 claims
- 1757US4988562AMagnetic recording mediaFUJI PHOTO FILM CO LTD·Filed 1988·Granted Jan 29, 1991·17 cites·6 claims
- 1857US4880692AMagnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 1988·Granted Nov 14, 1989·10 cites·10 claims
- 1956US4499121AMethod of preparing a magnetic recording medium with a calendering treatmentFUJI PHOTO FILM CO LTD·Filed 1983·Granted Feb 12, 1985·8 cites·6 claims
- 2054US5632789AAbrasive tapeFUJI PHOTO FILM CO LTD·Filed 1995·Granted May 27, 1997·19 cites·11 claims
- 2154US5407725AMagnetic recording medium having a magnetic layer containing two carbon blacks each within specific particle size and DBP adsorption rangesFUJI PHOTO FILM CO LTD·Filed 1994·Granted Apr 18, 1995·16 cites·4 claims
- 2253US4497864AMagnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 1983·Granted Feb 5, 1985·11 cites·13 claims
- 2352US5711772AAbrasive memberFUJI PHOTO FILM CO LTD·Filed 1996·Granted Jan 27, 1998·9 cites·8 claims
- 2450US5695386ACleaning method using abrasive tapeFUJI PHOTO FILM CO LTD·Filed 1996·Granted Dec 9, 1997·14 cites·9 claims
- 2550US5639284AAbrasive memberFUJI PHOTO FILM CO LTD·Filed 1996·Granted Jun 17, 1997·14 cites·4 claims
- 2649US5089331AMagnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 1989·Granted Feb 18, 1992·8 cites·19 claims
- 2748US5702800AAbrasive tape for magnetic information reading apparatus for photographic use, abrasive tape package, and a method for cleaning the apparatusFUJI PHOTO FILM CO LTD·Filed 1996·Granted Dec 30, 1997·11 cites·11 claims
- 2847US2006289335A1Manufacturing method of tape-form recording mediumFUJI PHOTO FILM CO LTD·Filed 2006·Application pending·0 cites
- 2946US4880693AMagnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 1988·Granted Nov 14, 1989·6 cites·10 claims
- 3046US4731278AMagnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 1986·Granted Mar 15, 1988·9 cites·6 claims
- 3146US4728569AMagnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 1985·Granted Mar 1, 1988·6 cites·9 claims
- 3246US4649072AMagnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 1985·Granted Mar 10, 1987·6 cites·22 claims
- 3345US5238753AMagnetic recording medium kubbed with a super hard alloy blade containing tungsten carbide power and cobaltFUJI PHOTO FILM CO LTD·Filed 1990·Granted Aug 24, 1993·7 cites·12 claims
- 3445US4734325AMagnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 1985·Granted Mar 29, 1988·6 cites·6 claims
- 3544US4686139AMagnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 1985·Granted Aug 11, 1987·9 cites·8 claims
- 3644US4582754AMagnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 1984·Granted Apr 15, 1986·4 cites·10 claims
- 3744US4552798AMagnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 1984·Granted Nov 12, 1985·4 cites·15 claims
- 3841US5326618AMagnetic recording medium and process for production thereofFUJI PHOTO FILM CO LTD·Filed 1992·Granted Jul 5, 1994·8 cites·6 claims
- 3940US5212019AMagnetic recording medium having a magnetic layer containing ferromagnetic metal powder, binder, fatty acid ester, and a specified branched chain fatty acidFUJI PHOTO FILM CO LTD·Filed 1992·Granted May 18, 1993·4 cites·4 claims
- 4039US5063105AMagnetic recording medium in which certain physical properties of the magnetic layer and the backcoat layer are specifiedFUJI PHOTO FILM CO LTD·Filed 1990·Granted Nov 5, 1991·6 cites·8 claims
- 4139US5008147AMagnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 1988·Granted Apr 16, 1991·6 cites·10 claims
- 4238US5094908AMagnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 1990·Granted Mar 10, 1992·3 cites·19 claims
- 4337US6012969AAbrasive member for very high return loss optical connector ferrulesFUJI PHOTO FILM CO LTD·Filed 1996·Granted Jan 11, 2000·7 cites·4 claims
- 4437US4614685AMagnetic recording medium having improved running propertiesFUJI PHOTO FILM CO LTD·Filed 1984·Granted Sep 30, 1986·2 cites·7 claims
- 4535US4748090AMagnetic recording mediaFUJI PHOTO FILM CO LTD·Filed 1983·Granted May 31, 1988·2 cites·17 claims
- 4634US4868060AMagnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 1987·Granted Sep 19, 1989·2 cites·8 claims
- 4733US4758468AMagnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 1985·Granted Jul 19, 1988·2 cites·10 claims
- 4832US2003171078A1Polishing member and method for polishing end faces of optical fibersFUJI PHOTO FILM CO LTD·Filed 2003·Application pending·0 cites
- 4931US4696858AMagnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 1985·Granted Sep 29, 1987·2 cites·5 claims
- 5030US4647501AMagnetic recording mediumFUJI PHOTO FILM CO LTD·Filed 1985·Granted Mar 3, 1987·1 cites·8 claims
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