Inventor · disambiguated record
Seiji Ichijima
Also filed as: ICHIJIMA SEIJI
89 granted patents·3 pending applications·1,124 citations·filing 1974–2022
99Inventor score
Top patents by PatentIndex Score
92 records- 0198US4764454AColor photographic material with color forming ligand compounds and a method of processingFUJI PHOTO FILM CO LTD·Filed 1986·Granted Aug 16, 1988·56 cites·19 claims
- 0297US7947383B2Organic electroluminescent deviceFUJIFILM CORP·Filed 2005·Granted May 24, 2011·104 cites·11 claims
- 0397US7569692B2Organic electroluminescent devices and metal complex compoundsFUJIFILM CORP·Filed 2004·Granted Aug 4, 2009·41 cites·1 claims
- 0496US5213958ASilver halide color photographic material containing a photographic yellow dye forming couplerFUJI PHOTO FILM CO LTD·Filed 1991·Granted May 25, 1993·38 cites·13 claims
- 0596US4477563ASilver halide color photographic light-sensitive materialFUJI PHOTO FILM CO LTD·Filed 1983·Granted Oct 16, 1984·52 cites·22 claims
- 0696US4022620AMethod of forming color photographic imagesFUJI PHOTO FILM CO LTD·Filed 1975·Granted May 10, 1977·52 cites·35 claims
- 0795US4948716ASilver halide color photographic materialFUJI PHOTO FILM CO LTD·Filed 1988·Granted Aug 14, 1990·33 cites·15 claims
- 0895US4366237ASilver halide color photographic light-sensitive materialFUJI PHOTO FILM CO LTD·Filed 1981·Granted Dec 28, 1982·41 cites·16 claims
- 0992US4310619AColor photographic material and process incorporating a novel magenta couplerFUJI PHOTO FILM CO LTD·Filed 1980·Granted Jan 12, 1982·30 cites·25 claims
- 1090US5151344AMethod for processing a silver halide color photographic materialFUJI PHOTO FILM CO LTD·Filed 1991·Granted Sep 29, 1992·19 cites·8 claims
- 1190US4883746ASilver halide photographic materialFUJI PHOTO FILM CO LTD·Filed 1989·Granted Nov 28, 1989·24 cites·20 claims
- 1290US4264723ASilver halide color photographic materialsFUJI PHOTO FILM CO LTD·Filed 1979·Granted Apr 28, 1981·19 cites·14 claims
- 1389US10396299B2Organic electroluminescent devices and metal complex compoundsUDC IRELAND LTD·Filed 2017·Granted Aug 27, 2019·2 cites·23 claims
- 1489US8940415B2Organic electroluminescent devices and metal complex compoundsNII KAZUMI·Filed 2012·Granted Jan 27, 2015·5 cites·7 claims
- 1589US4880726AMethod of forming a color imageFUJI PHOTO FILM CO LTD·Filed 1988·Granted Nov 14, 1989·22 cites·19 claims
- 1688US8609259B2Organic electroluminescent device and platinum compoundIGARASHI TATSUYA·Filed 2012·Granted Dec 17, 2013·4 cites·3 claims
- 1788US8211553B2Organic electroluminescent devices and metal complex compoundsNII KAZUMI·Filed 2009·Granted Jul 3, 2012·10 cites·6 claims
- 1888US4526861ASilver halide color photographic light-sensitive material comprising coupler having nitrogen-containing heterocyclic ringFUJI PHOTO FILM CO LTD·Filed 1984·Granted Jul 2, 1985·18 cites·29 claims
- 1987US5066576ASilver halide color photographic materialFUJI PHOTO FILM CO LTD·Filed 1990·Granted Nov 19, 1991·32 cites·6 claims
- 2086US11393989B2Organic electroluminescent devices and metal complex compoundsUDC IRELAND LTD·Filed 2019·Granted Jul 19, 2022·1 cites·16 claims
- 2185US6727053B2Dye-forming coupler, silver halide photographic light-sensitive material and azomethine dye compoundFUJI PHOTO FILM CO LTD·Filed 2002·Granted Apr 27, 2004·16 cites·4 claims
- 2284US4818664AProcessing of silver halide color photographic materials containing a compound releasing a specified development inhibitorFUJI PHOTO FILM CO LTD·Filed 1987·Granted Apr 4, 1989·16 cites·19 claims
- 2383US7771845B2Organic electroluminescent deviceFUJIFILM CORP·Filed 2006·Granted Aug 10, 2010·20 cites·12 claims
- 2482US4647527ASilver halide color photographic light-sensitive materials comprising combination of color-forming coupler and colored couplerFUJI PHOTO FILM CO LTD·Filed 1984·Granted Mar 3, 1987·19 cites·6 claims
- 2582US4301235AProcess and material for forming color photographic imageFUJI PHOTO FILM CO LTD·Filed 1980·Granted Nov 17, 1981·19 cites·26 claims
- 2682US2022344601A1Organic Electroluminescent Devices and Metal Complex CompoundsUDC IRELAND LTD·Filed 2022·Application pending·0 cites
- 2781US5238803ASilver halide color photographic photosensitive material containing a yellow couplerFUJI PHOTO FILM CO LTD·Filed 1991·Granted Aug 24, 1993·11 cites·13 claims
- 2880US5104783ASilver halide color photographic materialFUJI PHOTO FILM CO LTD·Filed 1991·Granted Apr 14, 1992·11 cites·25 claims
- 2977US5254446ASilver halide color negative photosensitive materialFUJI PHOTO FILM CO LTD·Filed 1991·Granted Oct 19, 1993·10 cites·13 claims
- 3077US4985336ASilver halide photographic materialFUJI PHOTO FILM CO LTD·Filed 1989·Granted Jan 15, 1991·13 cites·19 claims
- 3176US4741994ASilver halide color photographic materialFUJI PHOTO FILM CO LTD·Filed 1985·Granted May 3, 1988·13 cites·24 claims
- 3276US3990896AColor photographic light sensitive element and method of forming color photographic imagesFUJI PHOTO FILM CO LTD·Filed 1974·Granted Nov 9, 1976·8 cites·27 claims
- 3375US4886736ASilver halide color photographic materialFUJI PHOTO FILM CO LTD·Filed 1987·Granted Dec 12, 1989·12 cites·16 claims
- 3474US8277954B2Organic electroluminescent deviceISE TOSHIHIRO·Filed 2007·Granted Oct 2, 2012·3 cites·8 claims
- 3573US5194369ASilver halide color photographic materialFUJI PHOTO FILM CO LTD·Filed 1991·Granted Mar 16, 1993·13 cites·20 claims
- 3673US4737451ASilver halide color photographic materialFUJI PHOTO FILM CO LTD·Filed 1986·Granted Apr 12, 1988·11 cites·33 claims
- 3773US4536472ASilver halide color photographic light-sensitive materialFUJI PHOTO FILM CO LTD·Filed 1984·Granted Aug 20, 1985·13 cites·14 claims
- 3872US10153444B2Organic electroluminescent devices and metal complex compoundsUDC IRELAND LTD·Filed 2014·Granted Dec 11, 2018·0 cites·3 claims
- 3972US4618571ASilver halide color photographic light-sensitive materialFUJI PHOTO FILM CO LTD·Filed 1985·Granted Oct 21, 1986·32 cites·22 claims
- 4071US8257838B2Organic electroluminescent device and platinum compoundIGARASHI TATSUYA·Filed 2009·Granted Sep 4, 2012·2 cites·11 claims
- 4171US4480052AHeat-sensitive recording materialsFUJI PHOTO FILM CO LTD·Filed 1982·Granted Oct 30, 1984·12 cites·15 claims
- 4269US5051342ASilver halide photographic materials and method for color development thereofFUJI PHOTO FILM CO LTD·Filed 1990·Granted Sep 24, 1991·7 cites·16 claims
- 4369US4729944ASilver halide photographic light-sensitive materialFUJI PHOTO FILM CO LTD·Filed 1985·Granted Mar 8, 1988·10 cites·19 claims
- 4468US4678743ASilver halide color photographic materialFUJI PHOTO FILM CO LTD·Filed 1985·Granted Jul 7, 1987·10 cites·9 claims
- 4567US5071735ASilver halide color photographic material containing a compound releasing a dir command upon reaction with an oxidized developing agentFUJI PHOTO FILM CO LTD·Filed 1989·Granted Dec 10, 1991·7 cites·19 claims
- 4667US4842994AMaterial comprising a novel bleach accelerator-releasing couplerFUJI PHOTO FILM CO LTD·Filed 1987·Granted Jun 27, 1989·25 cites·20 claims
- 4764US4959299ASilver halide color photographic materialsFUJI PHOTO FILM CO LTD·Filed 1988·Granted Sep 25, 1990·22 cites·8 claims
- 4864US4711837ASilver halide color photographic materialFUJI PHOTO FILM CO LTD·Filed 1985·Granted Dec 8, 1987·7 cites·46 claims
- 4962US4812389AProcess for processing silver halide color photographic material containing DIR coupler having a group functioning as a development inhibitorFUJI PHOTO FILM CO LTD·Filed 1986·Granted Mar 14, 1989·8 cites·16 claims
- 5061US5474886ASilver halide color photographic materialFUJI PHOTO FILM CO LTD·Filed 1993·Granted Dec 12, 1995·5 cites·12 claims
Showing the top 50 of 92 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →