Inventor · disambiguated record
Isamu Saikawa
Also filed as: IMAIZUMI HIROYUKI · KODAMA YUTAKA · MAE MICHIKO · SAIKAWA ISAMU
48 granted patents·574 citations·filing 1975–1991
98Inventor score
Files withTOYAMA CHEMICAL CO LTD42TOYAMA CHEMICAL COMPANY LIMITE2TOYAMA CHEMICAL COMPANY LTD2HANDI PAC INC1TOYOMA CHEMICAL CO LTD1
Top patents by PatentIndex Score
48 records- 0196US4087424ANovel penicillins and cephalosporins and process for producing the sameTOYAMA CHEMICAL CO LTD·Filed 1975·Granted May 2, 1978·56 cites·4 claims
- 0295US4112090ANovel penicillins and cephalosporins and process for producing the sameTOYAMA CHEMICAL CO LTD·Filed 1976·Granted Sep 5, 1978·44 cites·40 claims
- 0395US4110327A2,3 Diketo-piperazinocarbonylamino alkanoic acids and derivativesTOYAMA CHEMICAL CO LTD·Filed 1976·Granted Aug 29, 1978·43 cites·8 claims
- 0494US4704459AProcess for producing 1-substituted aryl-1,4-dihydro-4-oxonaphthyridine derivatives, and processes for producing the intermediatesTOYAMA CHEMICAL CO LTD·Filed 1986·Granted Nov 3, 1987·67 cites·13 claims
- 0593US4379152ACephalosporinsTOYAMA CHEMICAL CO LTD·Filed 1979·Granted Apr 5, 1983·30 cites·27 claims
- 0692US4410522ACephalosporinsTOYAMA CHEMICAL CO LTD·Filed 1977·Granted Oct 18, 1983·28 cites·47 claims
- 0792US4327097ANovel penicillinsTOYAMA CHEMICAL CO LTD·Filed 1979·Granted Apr 27, 1982·28 cites·14 claims
- 0892US4317907AProcess for producing 7-(substituted)amino-3-substituted thiomethyl cephem carboxylic acidsTOYAMA CHEMICAL CO LTD·Filed 1978·Granted Mar 2, 1982·25 cites·88 claims
- 0992US4219554ANovel penicillins and cephalosporins and process for producing sameTOYAMA CHEMICAL CO LTD·Filed 1978·Granted Aug 26, 1980·28 cites·16 claims
- 1088US4698352A4-oxo-1,4-dihydronicotinic acid derivatives, salts thereof, and antibacterial agents containing the sameTOYAMA CHEMICAL CO LTD·Filed 1983·Granted Oct 6, 1987·30 cites·13 claims
- 1188US4489072ACephalosporinsTOYAMA CHEMICAL CO LTD·Filed 1981·Granted Dec 18, 1984·18 cites·30 claims
- 1285US4851535ANicotinic acid derivativesTOYAMA CHEMICAL CO LTD·Filed 1987·Granted Jul 25, 1989·24 cites·8 claims
- 1378US4656287AAminothiazole intermediate for a cephalosporinTOYOMA CHEMICAL CO LTD·Filed 1985·Granted Apr 7, 1987·13 cites·1 claims
- 1478US4263292A7α-methoxycephalosporins and pharmaceutical composition comprising the sameTOYAMA CHEMICAL CO LTD·Filed 1979·Granted Apr 21, 1981·10 cites·16 claims
- 1576US4312986AProcess for producing 7-(substituted)amino-3-substituted thiomethyl-Δ3 -cephem-4-carboxylic acidsTOYAMA CHEMICAL CO LTD·Filed 1979·Granted Jan 26, 1982·9 cites·23 claims
- 1676US3981865ABis-type penicillins and process for producing the sameTOYAMA CHEMICAL CO LTD·Filed 1975·Granted Sep 21, 1976·9 cites·14 claims
- 1774US4444753APharmaceutical composition comprising extract from poison pouch contents of beeTOYAMA CHEMICAL COMPANY LTD·Filed 1982·Granted Apr 24, 1984·13 cites·10 claims
- 1872US4614819ANovel process for producing cephalosporinsTOYAMA CHEMICAL CO LTD·Filed 1984·Granted Sep 30, 1986·9 cites·8 claims
- 1969US4385178AProcess for producing 7-(substituted)amino-3-substituted thiomethyl cephem carboxylic acidsTOYAMA CHEMICAL CO LTD·Filed 1981·Granted May 24, 1983·6 cites·6 claims
- 2068US4990508APyridone carboxylic acid derivatives and salts thereof, process for producing the same and antibacterial agents comprising the sameTOYAMA CHEMICAL CO LTD·Filed 1989·Granted Feb 5, 1991·18 cites·50 claims
- 2166US5144027ACephalosporins, process for producing the same, intermediates thereof and process for producing the intermediatesTOYAMA CHEMICAL CO LTD·Filed 1991·Granted Sep 1, 1992·8 cites·8 claims
- 2266US4436921A1-(4-Aminobenzyl)-2,3-dioxopiperazine derivatives, acid addition salts thereof and process for producing sameTOYAMA CHEMICAL CO LTD·Filed 1980·Granted Mar 13, 1984·4 cites·4 claims
- 2360US4395412A7α-MethoxycephalosporinsTOYAMA CHEMICAL CO LTD·Filed 1980·Granted Jul 26, 1983·4 cites·23 claims
- 2460US4200744ASubstituted 7α-methoxy-7β[(2,3-dioxo-1-piperazinyl)carbonylaminophenylacetamido]cephalosporinsTOYAMA CHEMICAL CO LTD·Filed 1977·Granted Apr 29, 1980·4 cites·12 claims
- 2559US4744985ANovel substances having carcinostatic and immunostimulating activity, process for preparing the same and carcinostatic agent containing the sameTOYAMA CHEMICAL CO LTD·Filed 1980·Granted May 17, 1988·8 cites·45 claims
- 2656US4736026ANovel process for producing a cephalosporinTOYAMA CHEMICAL CO LTD·Filed 1986·Granted Apr 5, 1988·4 cites·12 claims
- 2755US4129730A7α-Methoxy-cephalosporinsTOYAMA CHEMICAL CO LTD·Filed 1977·Granted Dec 12, 1978·5 cites·6 claims
- 2853US4673738ANovel intermediates of cephalosporins and process for producing 7-(substituted or unsubstituted amino)-3-substituted methyl-Δ3 -cephem-4-carboxylic acidsHANDI PAC INC·Filed 1984·Granted Jun 16, 1987·2 cites·5 claims
- 2951US4370316APharmaceutical composition comprising extract from poison pouch contents of bee useful for treating decreased immunityTOYAMA CHEMICAL COMPANY LTD·Filed 1980·Granted Jan 25, 1983·4 cites·1 claims
- 3050US4563534AProcess for producing 2-(2-aminothiazol-4-yl)glyoxylic acid derivative or a salt thereof, and intermediates therefor and process for producing the intermediatesTOYAMA CHEMICAL CO LTD·Filed 1983·Granted Jan 7, 1986·2 cites·6 claims
- 3148US4477666A1-(4-Aminobenzyl)-2,3-dioxopiperazine derivatives, acid addition salts thereof and process for producing sameTOYAMA CHEMICAL CO LTD·Filed 1982·Granted Oct 16, 1984·2 cites·3 claims
- 3246US4717767A7-amino-3-(pyrazinylmethyl) or (pyridazinylmethyl)-cephalosporinsTOYAMA CHEMICAL CO LTD·Filed 1986·Granted Jan 5, 1988·2 cites·6 claims
- 3346US4460774A1-(4-Aminobenzyl)-2,3-dioxopiperazine derivatives, acid addition salts thereof and process for producing sameTOYAMA CHEMICAL COMPANY LIMITE·Filed 1982·Granted Jul 17, 1984·1 cites·2 claims
- 3445US4304909AProcess for producing 7-(D(-)-α-(4-ethyl-2,3-dioxo-1-piperazinecarboxamido)-α-(4-hydroxyphenyl)acetamido)-3-(5-(1-methyl-1,2,3,4-tetrazolyl)thiomethyl)-.DELTA.3 -cephem-4-carboxylic acid and a pharmaceutically acceptable salt thereofTOYAMA CHEMICAL CO LTD·Filed 1979·Granted Dec 8, 1981·1 cites·12 claims
- 3543US4237280AIntermediate for cephalosporin type compoundTOYAMA CHEMICAL COMPANY LIMITE·Filed 1978·Granted Dec 2, 1980·1 cites·2 claims
- 3642US4477437ASubstances having carcinostatic and immunostimulating activityTOYAMA CHEMICAL CO LTD·Filed 1982·Granted Oct 16, 1984·3 cites·12 claims
- 3741US4477664ANovel 1-(4-piperidiniobenzyl)-2,3-dioxopiperazine derivatives or acid addition salts thereofTOYAMA CHEMICAL CO LTD·Filed 1982·Granted Oct 16, 1984·1 cites·3 claims
- 3841US4448963A4-[4-(Thiazolyl-amino)benzyl]-2,3-dioxopiperazine derivatives, acid addition salts thereof and process for producing sameTOYAMA CHEMICAL CO LTD·Filed 1982·Granted May 15, 1984·1 cites·2 claims
- 3941US4321265A7α-MethoxycephalosporinsTOYAMA CHEMICAL CO LTD·Filed 1980·Granted Mar 23, 1982·1 cites·28 claims
- 4038US4667040ANovel process for producing 2-(2-aminothiazol-4-yl)glyoxylic acid derivative or a salt thereof, and intermediates therefor and process for producing the intermediatesTOYAMA CHEMICAL CO LTD·Filed 1985·Granted May 19, 1987·1 cites·12 claims
- 4136US4199566AAntibacterial composition for medical useTOYAMA CHEMICAL CO LTD·Filed 1978·Granted Apr 22, 1980·2 cites·7 claims
- 4235US5011973ANovel process for producing bischoline-disulfonate derivativesTOYAMA CHEMICAL CO LTD·Filed 1989·Granted Apr 30, 1991·2 cites·9 claims
- 4333US4547462AProcess for preparing substance having carcinostatic and immunostimulating activityTOYAMA CHEMICAL CO LTD·Filed 1983·Granted Oct 15, 1985·1 cites·11 claims
- 4432US4618606AAntibiotic 7-(thiazolyl)-3-(pyrazinylmethyl) or (pyridazinylmethyl) cephalosporinsTOYAMA CHEMICAL CO LTD·Filed 1983·Granted Oct 21, 1986·1 cites·16 claims
- 4531US4459407A1-(4-Aminobenzyl)-2,3-dioxopiperazine derivatives and salts thereofTOYAMA CHEMICAL CO LTD·Filed 1982·Granted Jul 10, 1984·0 cites·5 claims
- 4628US4428936AAntibacterial composition for medical useTOYAMA CHEMICAL CO LTD·Filed 1980·Granted Jan 31, 1984·1 cites·1 claims
- 4727US4591558ANovel substances having antitumor and immunostimulating activity, process for preparing the same and antitumor agent containing the sameTOYAMA CHEMICAL CO LTD·Filed 1984·Granted May 27, 1986·0 cites·50 claims
- 4827US4324783AAntibacterial composition for medical useTOYAMA CHEMICAL CO LTD·Filed 1980·Granted Apr 13, 1982·0 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →