E. Merck
2Patents
0Active
2Granted
22Portfolio score
Filing activity: Jan 27, 1977 → Jul 20, 1977
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4116628A | Powdery pearlescent pigment composition | Chemistry; Metallurgy | 15 | Expired |
| US4120961A | Ring substituted pyrazino-isoquinoline derivatives and their preparation | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.