Patent assignee · JP · COMPANY

TOYAMA CHEMICAL CO., LTD.

157Patents
51Active
157Granted
45Portfolio score

Filing activity: Nov 6, 1974 → Apr 19, 2016 · 31 expiring within 5 years

Most-cited patents

PatentTitleAreaCited byStatus
US4372949A Treatment of cancer with carcinostatic and immunostimulating agent containing lysophospholipid and phospholipid Human Necessities 107 Expired
US5877174A 2,3-diketopiperazine derivatives or their salts Emerging Cross-Sectional Technologies 104 Expired
US4954518A 4H-1-benzopyran-4-one derivative or its salt, process for producing the same and pharmaceutical composition comprising the same as active ingredient Chemistry; Metallurgy 43 Expired
US4087424A Novel penicillins and cephalosporins and process for producing the same Chemistry; Metallurgy 36 Expired
US4704459A Process for producing 1-substituted aryl-1,4-dihydro-4-oxonaphthyridine derivatives, and processes for producing the intermediates Emerging Cross-Sectional Technologies 32 Expired
US8492582B2 N-acyl anthranilic acid derivative or salt thereof Chemistry; Metallurgy 32 Active
US4110327A 2,3 Diketo-piperazinocarbonylamino alkanoic acids and derivatives Chemistry; Metallurgy 31 Expired
US4112090A Novel penicillins and cephalosporins and process for producing the same Chemistry; Metallurgy 29 Expired
US4643849A Intermediates for urea and thiourea derivatives Chemistry; Metallurgy 26 Expired
US5578627A 1,2-benzoisoxazole derivative or its salt and brain-protecting agent comprising the same Chemistry; Metallurgy 24 Expired
US4219554A Novel penicillins and cephalosporins and process for producing same Chemistry; Metallurgy 17 Expired
US4410522A Cephalosporins Chemistry; Metallurgy 16 Expired
US4317907A Process for producing 7-(substituted)amino-3-substituted thiomethyl cephem carboxylic acids Chemistry; Metallurgy 16 Expired
US4327097A Novel penicillins Chemistry; Metallurgy 16 Expired
US4698352A 4-oxo-1,4-dihydronicotinic acid derivatives, salts thereof, and antibacterial agents containing the same Emerging Cross-Sectional Technologies 15 Expired
US4713376A Dementia-improving and therapeutic agents Human Necessities 15 Expired
US4379152A Cephalosporins Chemistry; Metallurgy 15 Expired
US5922755A Immunomodulator, cell adhesion inhibtor, and agent for treating, and preventing autoimmune diseases Chemistry; Metallurgy 15 Expired
US5935952A Quinolone- or naphthylidone-carboxylic acid derivates or their salts Emerging Cross-Sectional Technologies 14 Expired
US7087594B2 Alkyl ether derivatives or salts thereof Chemistry; Metallurgy 13 Expired
US4610983A N-acyl acidic amino acid diamide derivative, a salt thereof, and an anti-ulcer agent containing the same Chemistry; Metallurgy 13 Expired
US4489072A Cephalosporins Chemistry; Metallurgy 12 Expired
US4948796A Piperazine derivative or its salt, process for producing the same and pharmaceutical composition comprising the same as active ingredient Chemistry; Metallurgy 12 Expired
US4851535A Nicotinic acid derivatives Chemistry; Metallurgy 11 Expired
US5280032A 1,2-ethanediol derivative and salt thereof, process for producing the same, and cerebral function-improving agent comprising the same Chemistry; Metallurgy 11 Expired

Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.