"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Number | Title | Issue Date |
| 5869651 | Hydrazide derivatives of polyamides and their medical use as chelating agents The invention relates to certain substituted derivatives of aminopolycarboxylic acids and metal chelates thereof. The compounds are particularly suitable for use as diagnostic agent. For example, the compounds can be used as radiodiagnostic agents, detoxi... | 02/09/1999 |
| 5688486 | Use of fullerenes in diagnostic and/or therapeutic agents Compounds including tight molecular meshes, preferably curved in one or two directions, such as fullerenes and met-cars, can be used as carriers for diagnostic or therapeutic agents, especially diagnostic contrast agents.... | 11/18/1997 |
| 5650133 | Macrocyclic polyaza dichelates linked through ring nitrogens via an amide or ester functionality This invention relates to dichelants, in particular compounds having two macrocyclic chelant groups linked by a bridge containing an ester or amide bond, especially compounds of formula Vb ##STR1## (wherein each X which may be the same or different i... | 07/22/1997 |
| 5614168 | Multinuclear complexes for X-ray imaging The invention relates to the use as contrast enhancing agents in medical imaging, especially X-ray imaging, of multinuclear complexes, i.e. complexes, such as those of W202 (U20) 2, in which the complexed entity comprises at least two contrast enhancing a... | 03/25/1997 |
| 5556968 | Polyazamacrocycle chelating agents with amide linkages Macrocyclic chelating agents, optionally possessing more than one macrocyclic ring having at least two peptide linkages within the macrocyclic skeleton. The chelating agents are used for the preparation of paramagnetic metal chelates for use as MRI contra... | 09/17/1996 |
| 5482699 | Multinuclear complexes for x-ray imaging An imaging contrast medium comprising a physiologically tolerable multinuclear complex (as defined in claim 1) is disclosed. The multinuclear complex contains at least two, but preferably three or more contrast enhancing atoms. For X-ray or ultrasound ima... | 01/09/1996 |
| 5458869 | Multinuclear complexes for X-ray imaging The invention relates to the use as contrast enhancing agents in medical imaging, especially X-ray imaging, of multinuclear complexes, i.e. complexes, such as those of W2O2 (u2O)2, in which the complexed entity comprises at least two contrast enhancing at... | 10/17/1995 |
| 5446145 | Polychelant compounds There are disclosed polychelant compounds, that is multi-site metal chelating agents, and chelates formed therewith. The polychelants and especially their paramagnetic metal, heavy metal or radioactive metal polychelates are particularly suitable for use ... | 08/29/1995 |