Peter H. Ermann
15Patents
6h-index
17Co-inventors
63Inventor score
Filing activity: Aug 3, 1984 → Aug 16, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4777252A | 2-oxo-1-[[(substituted sulfonyl)amino]-carbonyl]azetidines | Chemistry; Metallurgy | 33 | Expired |
| US4633017A | N-hydroxy protecting groups and process for the preparation of 3-acylamino-1-hydroxy-2-azetidinones | Emerging Cross-Sectional Technologies | 25 | Expired |
| US4581170A | N-hydroxyl protecting groups and process and intermediates for the preparation of 3-acylamino-1-hydroxy-2-azetidinones | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4904775A | Heteroaroylhydrazide derivatives of monocyclic beta-lactam antibiotics | Chemistry; Metallurgy | 8 | Expired |
| US5290929A | Heteroaryl derivatives of monocyclic beta-lactam antibiotics | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5037983A | 6,7-dihydroxyquinoxalines as intermediates to beta-lactam antibiotics | Chemistry; Metallurgy | 6 | Expired |
| US5270334A | 4-methoxy-5-methyl-pyran-3-ol natural products and derivatives thereof | Chemistry; Metallurgy | 4 | Expired |
| US4871841A | 2-Oxo-1-[[(substituted sulfonyl)amino]-carbonyl]azetidines | Human Necessities | 1 | Expired |
| US4801705A | 2-oxo-1-(((substituted sulfonyl)amino)-carbonyl)azetidines | Chemistry; Metallurgy | 1 | Expired |
| US5266593A | Substituted pyran derivatives having antiinfective activity | Chemistry; Metallurgy | 1 | Expired |
| US5318963A | Heterocyclic hydrazide derivatives of monocyclic .beta.-lactam antibiotics | Human Necessities | 1 | Expired |
| US5705645A | Hereroaryl derivatives of monocyclic beta-lactam antibiotics | Emerging Cross-Sectional Technologies | 0 | Expired |
| US8563766B2 | Indane derivatives for use as intermediates | Chemistry; Metallurgy | 0 | Active |
| US5420277A | Intermediates for the preparation of heteroaryl derivatives of monocyclic beta-lactam antiobiotics | Emerging Cross-Sectional Technologies | 0 | Expired |
| US9139515B2 | Synthesis of R-biphenylalaninol | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.