Patent US6723483 - Sulfonium salt compounds - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More ??Sign inAdvanced Patent SearchPatentsA triphenyl sulfonium salt compound shown by the general formula [1] or [3]. (wherein R1 and R2 are each independently a hydrogen atom or a lower alkyl group, provided that at least one of R1 and R2 are a lower alkyl group, R3s are each independent