CompanyCompetitive AnalysisCompany Patent Opposition Analysis

Explore Idemitsu Kosan's recently opposed patents, revealing key competitive challenges and strategic patent disputes in the industry. Track oppositions filed by competitors to understand technology battlegrounds and assess potential risks.

Last updated on: Aug 7, 2025
Patent NumberGrant DateTitleTotal Oppositions
Feb 12, 2025Polycarbonate Resin Composition Including Polycarbonate-Polyorganosiloxane Copolymer, And Molded Article Of Same1
Jul 17, 2024Polycarbonate-Type Resin Composition And Molded Article1
May 8, 2024Lubricant Composition For Gasoline Engines And Method For Producing Same1
Jan 17, 2024Lubricating Oil Composition1
Jun 22, 2022Polycarbonate Resin Composition And Molded Polycarbonate Resin1
Mar 16, 2022Lubricating Oil Composition And Method For Reducing Friction In Internal Combustion Engines1
May 6, 2020Aromatic Polycarbonate Resin Molding1
Jun 12, 2019Lubricating Oil Composition1
Jan 30, 2019Polycarbonate-Polyorganosiloxane Copolymer And Method For Continuously Producing Same1
Dec 5, 2018Lubricant Composition1

Top competitors of Idemitsu Kosan

List of top competitors of Idemitsu Kosan based on patent oppositions.