Inventor · Chiba, JP

Koichi Ito

35Patents
10h-index
65Co-inventors
78Inventor score

Filing activity: Sep 25, 1979 → Jan 27, 2014

Most-cited inventions

PatentTitleAreaCited byStatus
US4803243A Block-graft copolymer Chemistry; Metallurgy 280 Expired
US7667041B2 Cinnamide compound Chemistry; Metallurgy 41 Active
US6737425B1 N,N-substituted cyclic amine derivatives Chemistry; Metallurgy 25 Expired
US6949571B2 1,2-dihydropyridine compounds, process for preparation of the same and use thereof Chemistry; Metallurgy 21 Expired
US7939549B2 1,2-dihydropyridine compounds, manufacturing method thereof and use thereof Chemistry; Metallurgy 19 Active
US7923563B2 Amorphous object of cinnamide compound Human Necessities 16 Active
US7618960B2 Morpholine type cinnamide compound Chemistry; Metallurgy 13 Active
US7687640B2 Cinnamide compound Chemistry; Metallurgy 12 Active
US7935815B2 Imidazoyl pyridine compounds and salts thereof Chemistry; Metallurgy 12 Active
US7737141B2 Prodrug of cinnamide compound Chemistry; Metallurgy 11 Active
US7897632B2 Multi-cyclic cinnamide derivatives Chemistry; Metallurgy 10 Active
US4328216A Novel organosilicon compounds and anti-tumor agents containing the same Human Necessities 8 Expired
US4731424A Process for producing polymer compound containing alkenylsilyl group Chemistry; Metallurgy 7 Expired
US7880009B2 Cinnamide compound Chemistry; Metallurgy 7 Active
US4864003A Block-graft polymer and process for producing it Chemistry; Metallurgy 5 Expired
US4560679A Organosilicon compounds and antitumor agents containing the compound as effective component Chemistry; Metallurgy 5 Expired
US7563811B2 1,2-dihydropyridine compounds, manufacturing method thereof and use thereof Chemistry; Metallurgy 4 Expired
US7973033B2 Multi-cyclic cinnamide derivatives Chemistry; Metallurgy 4 Active
US7713993B2 Multi-cycle cinnamide derivatives Chemistry; Metallurgy 4 Active
US8048878B2 Two cyclic cinnamide compound Chemistry; Metallurgy 3 Active
US8008293B2 Bicyclic oxomorpholine derivative Human Necessities 3 Active
US6825192B1 Heterodiazinone derivatives Chemistry; Metallurgy 3 Expired
US4778797A Organo-silicon compounds, process for the manufacture of same, and anti-tumor agent comprising the compound Human Necessities 2 Expired
US8754100B2 Nitrogen-containing fused heterocyclic compounds and their use as beta amyloid production inhibitors Chemistry; Metallurgy 2 Active
US7718807B2 Salt of 1,2-dihydropyridine compound Human Necessities 2 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.