Inventor · disambiguated record
Seiji Sakamoto
Also filed as: SAKAMOTO SEIJI
28 granted patents·2 pending applications·339 citations·filing 1976–2020
97Inventor score
Files withDIAFOIL CO LTD11HARISON TOSHIBA LIGHTING CORP7DIAFOIL HOECHST CO LTD5JFE STEEL CORP2MITSUBISHI CHEM IND2
Top patents by PatentIndex Score
30 records- 0183US6830660B1Method for producing metallurgical cokeJFE STEEL CORP·Filed 1999·Granted Dec 14, 2004·51 cites·7 claims
- 0283US4320207APolyester film containing fine powder of crosslinked polymerDIAFOIL CO LTD·Filed 1980·Granted Mar 16, 1982·34 cites·2 claims
- 0379US10080713B2Surface-treated spherical calcium carbonate particles for cosmetics and method for producing sameSAKAI CHEMICAL INDUSTRY CO·Filed 2013·Granted Sep 25, 2018·2 cites·10 claims
- 0478US5096773ABiaxially oriented polyester filmDIAFOIL CO LTD·Filed 1990·Granted Mar 17, 1992·31 cites·8 claims
- 0575US5006589APolyester film for magnetic recording mediaDIAFOIL CO LTD·Filed 1989·Granted Apr 9, 1991·29 cites·6 claims
- 0673US6875316B1High reactivity and high strength coke for blast furnace and method for producing the sameJFE STEEL CORP·Filed 2000·Granted Apr 5, 2005·10 cites·10 claims
- 0772US5164439APolyester film for magnetic recording mediaDIAFOIL CO LTD·Filed 1991·Granted Nov 17, 1992·20 cites·14 claims
- 0871US4101523APolyester filmsMITSUBISHI CHEM IND·Filed 1976·Granted Jul 18, 1978·16 cites·2 claims
- 0965US12496635B2Sintered material, sizing device, and method for manufacturing sintered materialSUMITOMO ELECTRIC SINTERED ALLOY LTD·Filed 2020·Granted Dec 16, 2025·0 cites·6 claims
- 1065US5023291APolyester compositionDIAFOIL CO LTD·Filed 1989·Granted Jun 11, 1991·15 cites·6 claims
- 1162US4732799APolyethylene naphthalate filmDIAFOIL CO LTD·Filed 1986·Granted Mar 22, 1988·20 cites·14 claims
- 1256US4096109APolyester films useful as magnetic tapesMITSUBISHI CHEM IND·Filed 1976·Granted Jun 20, 1978·15 cites·4 claims
- 1354US2022273601A1Collagen production promoter, wrinkle improver, topical skin care composition, and beauty food or beverageREFINE HOLDINGS CO LTD·Filed 2020·Application pending·0 cites
- 1450US5061571ABiaxially oriented polyester filmDIAFOIL CO LTD·Filed 1990·Granted Oct 29, 1991·10 cites·5 claims
- 1549US5670236ABiaxially oriented polyester film for magnetic recording mediumDIAFOIL HOECHST CO LTD·Filed 1995·Granted Sep 23, 1997·9 cites·14 claims
- 1649US4767657APolyester films suitable for use in magnetic tapesDIAFOIL CO LTD·Filed 1986·Granted Aug 30, 1988·12 cites·8 claims
- 1746US5863641APolyester film for sublimation type thermal transfer printingDIAFOIL HOECHST CO LTD·Filed 1997·Granted Jan 26, 1999·12 cites·16 claims
- 1846US5401558ABiaxially oriented polyester film for capacitor dielectricDIAFOIL HOECHST CO LTD·Filed 1993·Granted Mar 28, 1995·9 cites·6 claims
- 1945USD598158STubular lampHARISON TOSHIBA LIGHTING CORP·Filed 2007·Granted Aug 11, 2009·6 cites·1 claims
- 2044US5364684AMagnetic recording medium comprising a polyethylene-2,6-naphthalate multilayered film coated on both sides by a coating layerDIAFOIL HOECHST CO LTD·Filed 1992·Granted Nov 15, 1994·6 cites·13 claims
- 2144US2010072892A1Heater lampHARISON TOSHIBA LIGHTING CORP·Filed 2007·Application pending·0 cites
- 2240US4729915AElectrical insulating materialDIAFOIL CO LTD·Filed 1986·Granted Mar 8, 1988·6 cites·12 claims
- 2339USD586495STubular lampHARISON TOSHIBA LIGHTING CORP·Filed 2007·Granted Feb 10, 2009·4 cites·1 claims
- 2438USD586941STubular lampHARISON TOSHIBA LIGHTING CORP·Filed 2007·Granted Feb 17, 2009·3 cites·1 claims
- 2537US4886705APolyphenylene sulfide filmDIAFOIL CO LTD·Filed 1988·Granted Dec 12, 1989·5 cites·17 claims
- 2635USD586940STubular lampHARISON TOSHIBA LIGHTING CORP·Filed 2007·Granted Feb 17, 2009·2 cites·1 claims
- 2733US4840830APolyester film for magnetic recording tapeDIAFOIL CO LTD·Filed 1987·Granted Jun 20, 1989·6 cites·5 claims
- 2830USD586939STubular lampHARISON TOSHIBA LIGHTING CORP·Filed 2007·Granted Feb 17, 2009·1 cites·1 claims
- 2930USD586494STubular lampHARISON TOSHIBA LIGHTING CORP·Filed 2007·Granted Feb 10, 2009·1 cites·1 claims
- 3030US5324574ABiaxially stretched polyester filmDIAFOIL HOECHST CO LTD·Filed 1992·Granted Jun 28, 1994·4 cites·19 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →