Inventor · disambiguated record
Masa Hamada
Also filed as: HAMADA MASA · ISHIZUKA MASAAKI · TAKEUCHI TOMIO
51 granted patents·2 pending applications·666 citations·filing 1974–2013
98Inventor score
Files withMICROBIAL CHEM RES FOUND30ZAIDAN HOJIN BISEIBUTSU16AZIDAN HOJIN BISEIBUTSU KAGAKU1BRISTOL MYERS CO1HOKKO CHEM IND CO1
Top patents by PatentIndex Score
53 records- 0197US4242453ACultivating streptomyces to produce an esterase inhibitorMICROBIAL CHEM RES FOUND·Filed 1979·Granted Dec 30, 1980·72 cites·4 claims
- 0297US4189438APhysiologically active substance esterastinMICROBIAL CHEM RES FOUND·Filed 1978·Granted Feb 19, 1980·82 cites·1 claims
- 0391US6214340B1Physiologically active substance sulphostin, process for producing the same, and use thereofZAIDAN HOJIN BISEIBUTSU·Filed 1998·Granted Apr 10, 2001·66 cites·6 claims
- 0489US6514946B1Macrolide antibiotics and treatment and prophylaxis of pasteurellosis using the sameZAIDAN HOJIN BISEIBUTSU·Filed 2000·Granted Feb 4, 2003·36 cites·7 claims
- 0589US3974184AMicrobial production of certain isoflavonesMICROBIAL CHEM RES FOUND·Filed 1974·Granted Aug 10, 1976·19 cites·3 claims
- 0687US5162500APoststatin and related compounds or salts thereofZAIDAN HOJIN BISEIBUTSU·Filed 1990·Granted Nov 10, 1992·31 cites·4 claims
- 0786US5359138APoststatin and related compounds or salts thereofZAIDAN HOJIN BISEIBUTSU·Filed 1992·Granted Oct 25, 1994·70 cites·3 claims
- 0882US3973608AMicrobial production of certain isoflavonesMICROBIAL CHEM RES FOUND·Filed 1975·Granted Aug 10, 1976·37 cites·6 claims
- 0981US5527820AAntibiotics having immunosuppressive activity, delaminomycins and processes for the production of the sameZAIDAN HOJIN BISEIBUTSU·Filed 1993·Granted Jun 18, 1996·21 cites·5 claims
- 1080US4699879AProcess for microbial production of an optically active 3-(3,4-dihydroxyphenyl)serineMICROBIAL CHEM RES FOUND·Filed 1984·Granted Oct 13, 1987·24 cites·6 claims
- 1179US7482439B2Caprazene as novel compound and derivatives thereof, and caprazol as novel compound and derivatives thereofZAIDAN HOJIN BISEIBUTSU·Filed 2004·Granted Jan 27, 2009·7 cites·18 claims
- 1279US3988315AAntibiotics aclacinomycins A and BMICROBIAL CHEM RES FOUND·Filed 1975·Granted Oct 26, 1976·28 cites·3 claims
- 1376US5055453ABenanomicins a and antibiotic compositionsZAIDAN HOJIN BISEIBUTSU·Filed 1988·Granted Oct 8, 1991·13 cites·3 claims
- 1474US6780616B1Antibiotic caprazamycins and process for producing the sameZAIDAN HOJIN BISEIBUTSU·Filed 2000·Granted Aug 24, 2004·7 cites·10 claims
- 1574US4052449ABiologically active substance, bestatin, and production thereofMICROBIAL CHEM RES FOUND·Filed 1976·Granted Oct 4, 1977·14 cites·5 claims
- 1673US4358602AEbelactones and production thereofMICROBIAL CHEM RES FOUND·Filed 1981·Granted Nov 9, 1982·15 cites·9 claims
- 1770US7271147B2Antibiotics, tripropeptins and process for producing the sameZAIDAN HOJIN BISEIBUTSU·Filed 2001·Granted Sep 18, 2007·1 cites·10 claims
- 1869US4745067AL-aminoacylasesMICROBIAL CHEM RES FOUND·Filed 1986·Granted May 17, 1988·14 cites·3 claims
- 1963US8710198B2Caprazene as a novel compound and derivatives thereof, and caprazol as a novel compound and derivatives thereofMIYAKE TOSHIAKI·Filed 2008·Granted Apr 29, 2014·0 cites·2 claims
- 2061US4742155APlipastatin and method for preparation thereofMICROBIAL CHEM RES FOUND·Filed 1985·Granted May 3, 1988·9 cites·7 claims
- 2160US5109122AAntibiotics, dexylosylbenanomicin BZAIDAN HOJIN BISEIBUTSU·Filed 1991·Granted Apr 28, 1992·9 cites·1 claims
- 2260US4029547ABiologically active substance, bestatin, and production thereofMICROBIAL CHEM RES FOUND·Filed 1976·Granted Jun 14, 1977·15 cites·8 claims
- 2358US4147778AAntibiotic baumycin complex and components thereofMICROBIAL CHEM RES FOUND·Filed 1977·Granted Apr 3, 1979·4 cites·14 claims
- 2456US5096924AAnticancer antibiotic mi43-37f11 substanceAZIDAN HOJIN BISEIBUTSU KAGAKU·Filed 1990·Granted Mar 17, 1992·7 cites·2 claims
- 2556US2014005371A1Caprazene as a novel compound and derivatives thereof, and caprazol as a novel compound and derivatives thereofMEIJI SEIKA KAISHA·Filed 2013·Application pending·0 cites
- 2654US4663342APharmaceutical composition and method for immunopotentiationMICROBIAL CHEM RES FOUND·Filed 1985·Granted May 5, 1987·6 cites·2 claims
- 2752US4550159AAnthracycline compoundsMICROBIAL CHEM RES FOUND·Filed 1983·Granted Oct 29, 1985·4 cites·4 claims
- 2851US4595698APhysiologically active substance, arphamenine and production thereofMICROBIAL CHEM RES FOUND·Filed 1983·Granted Jun 17, 1986·3 cites·7 claims
- 2949US4420473AAntibiotic, MF266 substance and production thereofMICROBIAL CHEM RES FOUND·Filed 1981·Granted Dec 13, 1983·4 cites·5 claims
- 3047US4686308ANovel physiologically active substance MH435MICROBIAL CHEM RES FOUND·Filed 1986·Granted Aug 11, 1987·4 cites·3 claims
- 3146US4859593ANew physiologically active substance, arphamenine and production thereofMICROBIAL CHEM RES FOUND·Filed 1985·Granted Aug 22, 1989·3 cites·2 claims
- 3246US4049497AProduction of antibiotics neothramycin A and neothramycin BMICROBIAL CHEM RES FOUND·Filed 1976·Granted Sep 20, 1977·3 cites·21 claims
- 3345US6589984B1Benzofurylpyrone derivativesTEIJIN LTD·Filed 1999·Granted Jul 8, 2003·8 cites·19 claims
- 3445US4127714AAnthracycline glycosidesMICROBIAL CHEM RES FOUND·Filed 1977·Granted Nov 28, 1978·7 cites·7 claims
- 3543US3992524AAntitumor antibiotic macracidmycinMICROBIAL CHEM RES FOUND·Filed 1975·Granted Nov 16, 1976·4 cites·9 claims
- 3643US2003186976A1Benzofurylpyrone derivativesTEIJIN LTD MICROBIAL CHEMISTRY·Filed 2003·Application pending·0 cites
- 3741US4179573A(2S,3R)-3-amino-2-hydroxy-4-phenylbutanoic acidMICROBIAL CHEM RES FOUND·Filed 1977·Granted Dec 18, 1979·2 cites·1 claims
- 3839US4495347AAntibiotic oxanosine and process for the preparation thereofMICROBIAL CHEM RES FOUND·Filed 1982·Granted Jan 22, 1985·1 cites·1 claims
- 3939US4394446AProcess for the preparation of the antibiotic oxanosineMICROBIAL CHEM RES FOUND·Filed 1981·Granted Jul 19, 1983·1 cites·3 claims
- 4038US4565861ASerirubicumMICROBIAL CHEM RES FOUND·Filed 1984·Granted Jan 21, 1986·1 cites·1 claims
- 4138US4126606APhysiologically active peptides and a process for preparation thereofMICROBIAL CHEM RES FOUND·Filed 1977·Granted Nov 21, 1978·2 cites·9 claims
- 4237US4071411AAntitumor antibiotics aclacinomycins A and B [RD-9187A]MICROBIAL CHEM RES FOUND·Filed 1976·Granted Jan 31, 1978·4 cites·21 claims
- 4336US5278052AProcess for the simultaneous production of benanomicins A and BZAIDAN HOJIN BISEIBUTSU·Filed 1991·Granted Jan 11, 1994·1 cites·2 claims
- 4436US4105658ANeothramycin antibioticsMICROBIAL CHEM RES FOUND·Filed 1976·Granted Aug 8, 1978·1 cites·7 claims
- 4535US4198480AProcess for producing antibiotic baumycin complex and componentsMICROBIAL CHEM RES FOUND·Filed 1978·Granted Apr 15, 1980·3 cites·4 claims
- 4634US5098935ACarcinostatic or antitumor antibiotic, conagenin, and production and uses thereofZAIDAN HOJIN BISEIBUTSU·Filed 1990·Granted Mar 24, 1992·1 cites·4 claims
- 4734US5021549APhysiologically active substances, probestin and prostatin and production thereofZAIDAN HOJIN BISEIBUTSU·Filed 1988·Granted Jun 4, 1991·1 cites·3 claims
- 4833US5665779APharmaceutical composition for inhibiting the infection with AIDS virusZAIDAN HOJIN BISEIBUTSU·Filed 1992·Granted Sep 9, 1997·1 cites·1 claims
- 4932US5215981APolyether antibiotic mi215-nf3 substance, production process thereof, and agent for control of chicken coccidiosisHOKKO CHEM IND CO·Filed 1989·Granted Jun 1, 1993·0 cites·2 claims
- 5032US5117052APhysiologically active substances, benastatins a and b, and production and use thereofZAIDAN HOJIN BISEIBUTSU·Filed 1991·Granted May 26, 1992·0 cites·3 claims
Showing the top 50 of 53 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →