Assignee
MITSUBISHI GAS CHEMICAL CO
JP·1,958 granted patents·536 pending applications·23,432 citations·filing 1973–2025
Top patents by PatentIndex Score
2,494 records- 0197US7388057B2Di(meth)acrylate of epoxy-terminated polyphenylene etherMITSUBISHI GAS CHEMICAL CO·Filed 2007·Granted Jun 17, 2008·29 cites·2 claims
- 0297US6280641B1Printed wiring board having highly reliably via hole and process for forming via holeMITSUBISHI GAS CHEMICAL CO·Filed 1999·Granted Aug 28, 2001·147 cites·16 claims
- 0397US5807975AAlkyl sulfide type episulfide compoundMITSUBISHI GAS CHEMICAL CO·Filed 1996·Granted Sep 15, 1998·121 cites·15 claims
- 0497US5770765AProcess for the production of high-purity isophthalic acidMITSUBISHI GAS CHEMICAL CO·Filed 1997·Granted Jun 23, 1998·138 cites·6 claims
- 0597US4908151AOxygen absorbentMITSUBISHI GAS CHEMICAL CO·Filed 1988·Granted Mar 13, 1990·91 cites·15 claims
- 0697US4843170AProcess for producing vinyl acetateMITSUBISHI GAS CHEMICAL CO·Filed 1983·Granted Jun 27, 1989·83 cites·8 claims
- 0797US4192773AOxygen absorbentMITSUBISHI GAS CHEMICAL CO·Filed 1978·Granted Mar 11, 1980·161 cites·23 claims
- 0896US11286342B2Polycarbonate resin, method for producing same, and optical lensMITSUBISHI GAS CHEMICAL CO·Filed 2020·Granted Mar 29, 2022·5 cites·19 claims
- 0996US10303055B2Resist composition and method for forming resist patternMITSUBISHI GAS CHEMICAL CO·Filed 2015·Granted May 28, 2019·8 cites·8 claims
- 1096US9908831B2Resist composition, method for forming resist pattern, polyphenolic compound for use in the composition, and alcoholic compound that can be derived therefromMITSUBISHI GAS CHEMICAL CO·Filed 2016·Granted Mar 6, 2018·11 cites·24 claims
- 1196US9540339B2Resist composition, method for forming resist pattern, polyphenolic compound for use in the composition, and alcoholic compound that can be derived therefromMITSUBISHI GAS CHEMICAL CO·Filed 2016·Granted Jan 10, 2017·10 cites·3 claims
- 1296US7186844B2Method for producing cyclic carbamate esterMITSUBISHI GAS CHEMICAL CO·Filed 2005·Granted Mar 6, 2007·43 cites·5 claims
- 1396US7118806B2Plastic molded product having photochromic characteristic and/or polarizing characteristicsMITSUBISHI GAS CHEMICAL CO·Filed 2001·Granted Oct 10, 2006·22 cites·12 claims
- 1496US7078562B2Adamantane derivatives and resin compositions using the same as raw materialMITSUBISHI GAS CHEMICAL CO·Filed 2005·Granted Jul 18, 2006·52 cites·4 claims
- 1596US7053143B2Polyester-based resin compositionMITSUBISHI GAS CHEMICAL CO·Filed 2003·Granted May 30, 2006·64 cites·16 claims
- 1696US5712412AProcess for producing highly pure terephthalic acidMITSUBISHI GAS CHEMICAL CO·Filed 1995·Granted Jan 27, 1998·114 cites·4 claims
- 1796US5242879AActive carbon materials, process for the preparation thereof and the use thereofMITSUBISHI GAS CHEMICAL CO·Filed 1991·Granted Sep 7, 1993·189 cites·3 claims
- 1896US5004561AElectromagnetic wave-shielding thermoplastic resin compositionMITSUBISHI GAS CHEMICAL CO·Filed 1989·Granted Apr 2, 1991·81 cites·9 claims
- 1996US4856650AOxygen absorbent packageMITSUBISHI GAS CHEMICAL CO·Filed 1987·Granted Aug 15, 1989·84 cites·28 claims
- 2096US4769175ASheet-like, oxygen-scavenging agentMITSUBISHI GAS CHEMICAL CO·Filed 1986·Granted Sep 6, 1988·129 cites·14 claims
- 2196US4524015AOxygen absorbentMITSUBISHI GAS CHEMICAL CO·Filed 1983·Granted Jun 18, 1985·88 cites·8 claims
- 2296US4421235AOxygen absorbent-containing bag and container sealing member having the sameMITSUBISHI GAS CHEMICAL CO·Filed 1981·Granted Dec 20, 1983·91 cites·4 claims
- 2396US4166807AOxygen absorbentMITSUBISHI GAS CHEMICAL CO·Filed 1977·Granted Sep 4, 1979·101 cites·34 claims
- 2496US4127503AOxygen absorbentMITSUBISHI GAS CHEMICAL CO·Filed 1977·Granted Nov 28, 1978·106 cites·54 claims
- 2596US4110364ACurable resin compositions of cyanate estersMITSUBISHI GAS CHEMICAL CO·Filed 1975·Granted Aug 29, 1978·132 cites·11 claims
- 2695US10174167B2Polyimide resinMITSUBISHI GAS CHEMICAL CO·Filed 2016·Granted Jan 8, 2019·9 cites·12 claims
- 2795US9360593B2Polycarbonate resin, production method therefor, and optical molded bodyMITSUBISHI GAS CHEMICAL CO·Filed 2013·Granted Jun 7, 2016·18 cites·24 claims
- 2895US7807742B2Polyamide resin compositionMITSUBISHI GAS CHEMICAL CO·Filed 2006·Granted Oct 5, 2010·25 cites·7 claims
- 2995US7179869B2Process for producing polyester resinsMITSUBISHI GAS CHEMICAL CO·Filed 2005·Granted Feb 20, 2007·37 cites·20 claims
- 3095US6794481B2Bifunctional phenylene ether oligomer, its derivatives, its use and process for the production thereofMITSUBISHI GAS CHEMICAL CO·Filed 2002·Granted Sep 21, 2004·65 cites·6 claims
- 3195US6720651B2Semiconductor plastic package and process for the production thereofMITSUBISHI GAS CHEMICAL CO·Filed 2002·Granted Apr 13, 2004·96 cites·8 claims
- 3295US6472495B1Composition for producing resinMITSUBISHI GAS CHEMICAL CO·Filed 2000·Granted Oct 29, 2002·57 cites·12 claims
- 3395US6372410B1Resist stripping compositionMITSUBISHI GAS CHEMICAL CO·Filed 2000·Granted Apr 16, 2002·107 cites·23 claims
- 3495US6097089ASemiconductor plastic package, metal plate for said package, and method of producing copper-clad board for said packageMITSUBISHI GAS CHEMICAL CO·Filed 1999·Granted Aug 1, 2000·121 cites·11 claims
- 3595US5945504AEpisulfide compoundMITSUBISHI GAS CHEMICAL CO·Filed 1997·Granted Aug 31, 1999·115 cites·17 claims
- 3695US5286407AOxygen absorbent composition and method of preserving article with sameMITSUBISHI GAS CHEMICAL CO·Filed 1991·Granted Feb 15, 1994·119 cites·6 claims
- 3795US4366179AOxygen and carbon dioxide absorbent and process for storing coffee by using the sameMITSUBISHI GAS CHEMICAL CO·Filed 1981·Granted Dec 28, 1982·107 cites·8 claims
- 3895US4287995AContainer sealing member with oxygen absorbentMITSUBISHI GAS CHEMICAL CO·Filed 1979·Granted Sep 8, 1981·112 cites·6 claims
- 3995US4011200ANovel polyphenylene ether and process for preparing the sameMITSUBISHI GAS CHEMICAL CO·Filed 1975·Granted Mar 8, 1977·73 cites·12 claims
- 4094US10767007B2Polycarbonate resin, method for producing same, and optical lensMITSUBISHI GAS CHEMICAL CO·Filed 2017·Granted Sep 8, 2020·5 cites·8 claims
- 4194US10048404B2Polycarbonate resin and optical lensMITSUBISHI GAS CHEMICAL CO·Filed 2015·Granted Aug 14, 2018·4 cites·10 claims
- 4294US9637604B2Sterilized oxygen-absorbing resin composition, sterilized oxygen-absorbing multilayer container and method for producing the sameMITSUBISHI GAS CHEMICAL CO·Filed 2015·Granted May 2, 2017·5 cites·10 claims
- 4394US7871554B2Process for producing polyimide filmMITSUBISHI GAS CHEMICAL CO·Filed 2006·Granted Jan 18, 2011·44 cites·12 claims
- 4494US7393904B2(Meth)acrylate-terminated polyphenylene etherMITSUBISHI GAS CHEMICAL CO·Filed 2007·Granted Jul 1, 2008·22 cites·4 claims
- 4594US6835785B2Polyphenylene ether oligomer compound, derivatives thereof and use thereofMITSUBISHI GAS CHEMICAL CO·Filed 2003·Granted Dec 28, 2004·55 cites·2 claims
- 4694US6323169B1Resist stripping composition and process for stripping resistMITSUBISHI GAS CHEMICAL CO·Filed 2000·Granted Nov 27, 2001·94 cites·16 claims
- 4794US6117923AResin for optical materialMITSUBISHI GAS CHEMICAL CO·Filed 1998·Granted Sep 12, 2000·100 cites·17 claims
- 4894US5972862ACleaning liquid for semiconductor devicesMITSUBISHI GAS CHEMICAL CO·Filed 1997·Granted Oct 26, 1999·234 cites·33 claims
- 4994US5777161AProcess for producing highly pure terephthalic acid by use of dispersion medium replacement apparatusMITSUBISHI GAS CHEMICAL CO·Filed 1997·Granted Jul 7, 1998·104 cites·4 claims
- 5094US4978778AProcess for producing vinyl acetateMITSUBISHI GAS CHEMICAL CO·Filed 1983·Granted Dec 18, 1990·100 cites·16 claims
Showing the top 50 of 2,494 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when MITSUBISHI GAS CHEMICAL CO files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →