Tsumura & Co.
60Patents
21Active
60Granted
41Portfolio score
Filing activity: Feb 10, 1988 → Mar 15, 2017 · 9 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5968899A | Medicinal compositions of peptides with EACA or tranexamic acid for enhanced mucosal absorption | Human Necessities | 24 | Expired |
| US5734014A | Elafin derivative | Human Necessities | 19 | Expired |
| US5629340A | Angiogenesis inhibitor and novel compound | Human Necessities | 16 | Expired |
| US4918107A | Glutamate receptor inhibitor and insecticidal composition | Chemistry; Metallurgy | 12 | Expired |
| US5393740A | Neurotensin Hexapeptides | Human Necessities | 11 | Expired |
| US6022888A | Iridoid derivatives and neovascularization inhibitors containing the same as active ingredient | Chemistry; Metallurgy | 10 | Expired |
| US4904694A | Biphenyl derivative useful in the treatment of liver diseases | Human Necessities | 9 | Expired |
| US5447719A | .beta.-glucuronidase inhibitor | Human Necessities | 9 | Expired |
| US5318798A | Process for producing kampo medicine hard capsules | Human Necessities | 7 | Expired |
| US6054484A | Transparent aqueous solution of diclofenac sodium and medicinal compositions with the use of the same | Human Necessities | 7 | Expired |
| US5795916A | Composition of external preparation | Human Necessities | 6 | Expired |
| US6413995B1 | Cinnamamide derivatives and drug compositions containing the same | Human Necessities | 5 | Expired |
| US5106871A | Anti-ulcer agent comprising chalcone derivative as effective ingredient and novel chalcone derivative | Chemistry; Metallurgy | 5 | Expired |
| US6313153A | Compositions and methods for treating nephritis and inhibiting TGF -.beta. related conditions using pyridylacrylamide derivatives | Chemistry; Metallurgy | 5 | Expired |
| US5041580A | Novel binuclear platinum complex and antitumor agent comprising this complex as active ingredient | Human Necessities | 5 | Expired |
| US5484595A | Process for preparation of dibenzocyclooctadiene type lignan | Chemistry; Metallurgy | 5 | Expired |
| US5353830A | Apparatus for automatically switching conduit pipes of liquid treating plant | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5521216A | Chromone derivative, and aldose reductase inhibitor comprising said compound as active ingredient | Human Necessities | 5 | Expired |
| US5627204A | Chromone derivative, and aldose reductase inhibitor comprising said compound as active component | Chemistry; Metallurgy | 4 | Expired |
| US6225478A | Iridoid derivatives and neovascularization inhibitors containing the same as active ingredient | Chemistry; Metallurgy | 4 | Expired |
| US5272172A | Iridoid derivatives and the use thereof as a drug | Chemistry; Metallurgy | 4 | Expired |
| US5344845A | Compound and use of the same as medicine | Chemistry; Metallurgy | 3 | Expired |
| US4996331A | Novel biphenyl derivative and preparation and use thereof | Chemistry; Metallurgy | 3 | Expired |
| US5675023A | Chromone derivative, and aldose reductase inhibitor comprising said compound as active component | Chemistry; Metallurgy | 3 | Expired |
| US5459160A | Iridoid derivatives and the use thereof as a drug | Chemistry; Metallurgy | 2 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.