Inventor · disambiguated record
Tohru Shibata
Also filed as: SHIBATA TOHRU
49 granted patents·2 pending applications·722 citations·filing 1985–2021
98Inventor score
Top patents by PatentIndex Score
51 records- 0194US5863652ATobacco smoke filter materials, fibrous cellulose esters, and production processesDAICEL CHEM·Filed 1997·Granted Jan 26, 1999·85 cites·4 claims
- 0287US4818394ASeparating agentDAICEL CHEM·Filed 1988·Granted Apr 4, 1989·48 cites·20 claims
- 0386US5663310ACellulose acetate solution and process for the preparation of the sameFUJI PHOTO FILM CO LTD·Filed 1996·Granted Sep 2, 1997·53 cites·17 claims
- 0485US4786415ASeparation agent comprising aliphatic ester of polysaccharideDAICEL CHEM·Filed 1987·Granted Nov 22, 1988·32 cites·10 claims
- 0580US8455637B2Process for adjusting degree of acetyl substitution of cellulose acetateSHIBATA TOHRU·Filed 2011·Granted Jun 4, 2013·2 cites·7 claims
- 0680US7671193B2Method for adjusting the degree of substitution with acetyl group of cellulose acetateDAICEL CHEM·Filed 2002·Granted Mar 2, 2010·13 cites·7 claims
- 0778US5705632AProcess for the preparation of cellulose acetate filmFUJI PHOTO FILM CO LTD·Filed 1996·Granted Jan 6, 1998·37 cites·8 claims
- 0877US4708951AAnticoagulative high-molecular compositionsDAICEL CHEM·Filed 1985·Granted Nov 24, 1987·25 cites·15 claims
- 0975US4879038ASeparation agent comprising acyl- or carbamoyl-substituted polysaccharideDAICEL CHEM·Filed 1988·Granted Nov 7, 1989·14 cites·15 claims
- 1074US5856006ATobacco filter material and a method for producing the sameDAICEL CHEM·Filed 1995·Granted Jan 5, 1999·50 cites·14 claims
- 1173US6344239B1Method for producing a tobacco filter materialDAICEL CHEM·Filed 1998·Granted Feb 5, 2002·46 cites·11 claims
- 1273US5927287ATobacco filter material and a tobacco filter as produced using the sameDAICEL CHEM·Filed 1997·Granted Jul 27, 1999·46 cites·17 claims
- 1372USRE34457ESeparating agentDAICEL CHEM·Filed 1992·Granted Nov 30, 1993·29 cites·21 claims
- 1472US5032281ASeparating membrane and separation methodDAICEL CHEM·Filed 1990·Granted Jul 16, 1991·35 cites·8 claims
- 1572US4966694ASeparation agent comprising acyl- or carbamoyl-substituted polysaccharideDAICEL CHEM·Filed 1989·Granted Oct 30, 1990·12 cites·2 claims
- 1671US4786416AResolving agentDAICEL CHEM·Filed 1987·Granted Nov 22, 1988·8 cites·7 claims
- 1770US5489387ASeparation agent comprising acyl- or carbamoyl-substituted polysaccharideDAICEL CHEM·Filed 1995·Granted Feb 6, 1996·11 cites·9 claims
- 1869US7302954B1Cigarette filter comprising grape proanthocyanidinDAICEL CHEM·Filed 2000·Granted Dec 4, 2007·13 cites·14 claims
- 1969US4830752ASeparation agent comprising 1,3-glucanDAICEL CHEM·Filed 1987·Granted May 16, 1989·6 cites·12 claims
- 2068US2009062525A1Method of adjusting the degree of substitution with acetyl group of cellulose acetateDAICEL CHEM·Filed 2008·Application pending·0 cites
- 2167US11643476B2Cellulose ester and molded article thereofDAICEL CORP·Filed 2021·Granted May 9, 2023·0 cites·4 claims
- 2267US4714555AAgent for separationDAICEL CHEM·Filed 1987·Granted Dec 22, 1987·14 cites·12 claims
- 2364US5017290ASeparation agent comprising acyl- or carbamoyl-substituted polysaccharideDAICEL CHEM·Filed 1989·Granted May 21, 1991·4 cites·9 claims
- 2464US4683341AOptical resolution of oxycyclopentenoneDAICEL CHEM·Filed 1985·Granted Jul 28, 1987·8 cites·10 claims
- 2563US10926230B2Semipermeable membraneDAICEL CORP·Filed 2017·Granted Feb 23, 2021·0 cites·9 claims
- 2663US5692527ATobacco smoke filter materials, fibrous cellulose esters, and production processesDAICEL CHEM·Filed 1995·Granted Dec 2, 1997·14 cites·13 claims
- 2762US5678577ATobacco filter material and a tobacco filter as produced using the sameDAICEL CHEM·Filed 1995·Granted Oct 21, 1997·27 cites·19 claims
- 2861US5041226ASeparating with an agent comprising aliphatic ester of polysaccharideDAICEL CHEM·Filed 1989·Granted Aug 20, 1991·9 cites·7 claims
- 2961US4892659ASeparation agent comprising aliphatic ester of polysaccharideDAICEL CHEM·Filed 1988·Granted Jan 9, 1990·9 cites·9 claims
- 3059US5415769ASeparation agent comprising aliphatic or aromatic ester of polysaccharideDAICEL CHEM·Filed 1994·Granted May 16, 1995·3 cites·1 claims
- 3158US10927190B2Cellulose ester and molded article thereofDAICEL CORP·Filed 2017·Granted Feb 23, 2021·0 cites·3 claims
- 3258USRE38435ESeparating agentDAICEL CHEM·Filed 1997·Granted Feb 24, 2004·6 cites·28 claims
- 3357US5690126ATobacco filter materials and tobacco filter as produced by using the sameDAICEL CHEM·Filed 1996·Granted Nov 25, 1997·24 cites·18 claims
- 3454US5059328ASeparation agent comprising 1,3-glucanDAICEL CHEM·Filed 1991·Granted Oct 22, 1991·3 cites·9 claims
- 3552US5415780ASeparation agent comprising acyl- or carbamoyl-substituted polysaccharideDAICEL CHEM·Filed 1994·Granted May 16, 1995·3 cites·9 claims
- 3650US5137638ASeparation agent comprising acyl- or carbamoyl-substituted polysaccharideDAICEL CHEM·Filed 1991·Granted Aug 11, 1992·2 cites·9 claims
- 3746US5089138ASeparating with an agent comprising an aliphatic ester of a polysaccharideDAICEL CHEM·Filed 1991·Granted Feb 18, 1992·5 cites·10 claims
- 3846US4846968AResolving agentDAICEL CHEM·Filed 1988·Granted Jul 11, 1989·2 cites·11 claims
- 3946US2020270368A1Cellulose mixed ester and molded article of sameDAICEL CORP·Filed 2018·Application pending·0 cites
- 4044US5002669ASeparation agent comprising 1,3-glucanDAICEL CHEM·Filed 1989·Granted Mar 26, 1991·1 cites·9 claims
- 4144US4897198ASeparation agent comprising 1,3-glucanDAICEL CHEM·Filed 1989·Granted Jan 30, 1990·1 cites·9 claims
- 4243US5135653AOptical resolution with β-1,4-xylan dibenzoateDAICEL CHEM·Filed 1991·Granted Aug 4, 1992·2 cites·2 claims
- 4338US5032277AOptical resolution with β-1,4-mannan tribenzoateDAICEL CHEM·Filed 1990·Granted Jul 16, 1991·6 cites·2 claims
- 4438US4931184AOptical resolution with tribenzoyl-b-1,4-chitosanDAICEL CHEM·Filed 1988·Granted Jun 5, 1990·4 cites·2 claims
- 4537US5472599ASeparation agent comprising aliphatic or aromatic ester of polysaccharideDAICEL CHEM·Filed 1995·Granted Dec 5, 1995·2 cites·1 claims
- 4637US5334311ASeparation agent comprising aliphatic or aromatic ester of polysaccharideDAICEL CHEM·Filed 1993·Granted Aug 2, 1994·2 cites·1 claims
- 4737US5192444ASeparating with an agent comprising an aliphatic ester of a polysaccharideDAICEL CHEM·Filed 1991·Granted Mar 9, 1993·4 cites·9 claims
- 4836US5075009ASeparation agent comprising acyl- or carbamoyl-substituted polysaccharideDAICEL CHEM·Filed 1991·Granted Dec 24, 1991·1 cites·9 claims
- 4933US5229002ASeparation agent comprising acyl- or carbamoyl-substituted polysaccharideDAICEL CHEM·Filed 1992·Granted Jul 20, 1993·1 cites·9 claims
- 5031US5368737ASeparation agent comprising acyl-or carbamoyl-substituted polysaccharideDAICEL CHEM·Filed 1993·Granted Nov 29, 1994·0 cites·9 claims
Showing the top 50 of 51 patent records by PatentIndex Score.
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