Inventor · disambiguated record
Yutaka Ohtsu
Also filed as: OHTSU YUTAKA
22 granted patents·636 citations·filing 1983–2002
96Inventor score
Top patents by PatentIndex Score
22 records- 0190US4801445ACosmetic compositions containing modified powder or particulate materialSHISEIDO CO LTD·Filed 1986·Granted Jan 31, 1989·94 cites·21 claims
- 0286US4882225AModified powder or particulate materialSHISEIDO CO LTD·Filed 1988·Granted Nov 21, 1989·76 cites·20 claims
- 0386US4818614AModified powderSHISEIDO CO LTD·Filed 1986·Granted Apr 4, 1989·90 cites·32 claims
- 0483US5738783ALiquid chromatograph having a micro- and semi-micro columnSHISEIDO CO LTD·Filed 1996·Granted Apr 14, 1998·64 cites·3 claims
- 0579USD288321SPortable television setCITIZEN WATCH CO LTD·Filed 1984·Granted Feb 17, 1987·15 cites·1 claims
- 0678USD281244SPortable television setCITIZEN WATCH CO LTD·Filed 1983·Granted Nov 5, 1985·15 cites·1 claims
- 0776US4743377APacking material for liquid chromatographySHISEIDO CO LTD·Filed 1986·Granted May 10, 1988·32 cites·29 claims
- 0876USD284473SPortable television setCITIZEN WATCH CO LTD·Filed 1984·Granted Jul 1, 1986·13 cites·1 claims
- 0975US5203991APacking material for liquid chromatographySHISEIDO CO LTD·Filed 1991·Granted Apr 20, 1993·45 cites·9 claims
- 1068US6063283AMethod for analyzing a sample by using a liquid chromatographSHISEIDO CO LTD·Filed 1998·Granted May 16, 2000·29 cites·1 claims
- 1167USD297536SPocket sized televisionCITIZEN WATCH CO LTD·Filed 1985·Granted Sep 6, 1988·11 cites·1 claims
- 1266US6482867B1Polymer packing material for liquid chromatography and a producing method thereofSHISEIDO CO LTD·Filed 1999·Granted Nov 19, 2002·33 cites·8 claims
- 1364US6360589B1Liquid chromatography and column packing materialSHISEIDO CO LTD·Filed 1998·Granted Mar 26, 2002·27 cites·15 claims
- 1461US7329386B2Column packing material and method for producing the sameSHISEIDO CO LTD·Filed 2002·Granted Feb 12, 2008·6 cites·11 claims
- 1561US5318848AModified silica gel in chromatography packing materialSHISEIDO CO LTD·Filed 1991·Granted Jun 7, 1994·21 cites·3 claims
- 1660US5135649AColumn packing material with both hydrophobic and hydrophilic groups and process for production thereofSHISEIDO CO LTD·Filed 1990·Granted Aug 4, 1992·24 cites·9 claims
- 1760USD285443SPortable television setCITIZEN WATCH CO LTD·Filed 1984·Granted Sep 2, 1986·7 cites·1 claims
- 1845US5145578APacking material for liquid chromatographySHISEIDO CO LTD·Filed 1990·Granted Sep 8, 1992·12 cites·7 claims
- 1941US5990182APolymer packing material for liquid chromatography and a producing method thereofSHISEIDO CO LTD·Filed 1998·Granted Nov 23, 1999·5 cites·14 claims
- 2041USD290010SMicro floppy disk driveCITIZEN WATCH CO LTD·Filed 1984·Granted May 26, 1987·2 cites·1 claims
- 2140US6316647B1Cation-exchanged clay mineral, packing material for chromatography using the same and method of producing the sameSHISEIDO CO LTD·Filed 1999·Granted Nov 13, 2001·7 cites·17 claims
- 2239US5672422APacking material for column and process for production thereofSHISEIDO CO LTD·Filed 1992·Granted Sep 30, 1997·8 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →