"The abolishment of pain in surgery is a chimera. It is absurd to go on seeking it...knife and pain are two words in surgery that must forever be associated in the consciousness of the patient."
Dr. Alfred Velpeau, French surgeon ; 1839
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 6328855 | Method for producing (+)-exo-6-phenyl-3-azabicyclo-[3.2.0]heptanes A process for preparing (+)-exo-6-phenyl-3-azabicyclo[3.2.0]heptanes of the formula I ##STR1## where R is hydrogen, chlorine, bromine, fluorine or methoxy, which comprises photocyclizing a bisallylammonium salt of the formula II ##STR2## where R has ... | 12/11/2001 |
| 5235119 | Nitrocubanes An efficient direct functionalization of nitrocubanes has been achieved by irradiation of a solution in an oxalyl halide to yield halogenated and halocarbonylated derivatives of nitrocubanes.... | 08/10/1993 |
| 5214222 | Nitrocubanes An efficient direct functionalization of nitrocubanes has been achieved by rradiation of a solution in an oxalyl halide to yield halogenated and halocarbonylated derivatives of nitrocubanes.... | 05/25/1993 |
| 4997988 | Oxa-organic sulfur compounds, their preparation and use Oxa-organic sulfur compounds, methods of preparing such compounds and methods of using the compounds as polymer chain length terminating agents are provided. The compounds are prepared by reacting allyl alcohol in the presence of a basic catalyst with a c... | 03/05/1991 |
| 4855025 | Polyfluoro compounds and method for preparing them This invention relates to compounds which simultaneously contain a perfluorinated chain and a hydrogenated chain and which correspond to the general formula: ##STR1## in which RF is a perfluoroalkyl radical, m an integer from 0 to 2, ... | 08/08/1989 |
| 4046656 | Photochlorination process for methyl aromatic compounds The rate of photochlorination of methyl aromatic compounds, such as toluene, cresol, xylene, toluenesulfonyl chloride, methylnaphthalene, diphenylmethane, etc., is increased when carried out in the presence of bromine.... | 09/06/1977 |
| 4030994 | Substitutive fluorination of organic compounds Organic compounds having at least one replaceable hydrogen atom are fluorinated in the liquid or solid state by treatment with fluoroxyperfluoroalkanes or fluoroxypentafluorosulfur under the influence of a free radical initiator.... | 06/21/1977 |
| 4004996 | Fluorination of organic compounds Organic amines, amino acids, polyamides and vinylpolymers are fluorinated by the action of fluorine in liquid hydrogen fluoride optionally containing boron trifluoride or antimony pentafluoride at about -80° to 15° C. and optionally under irradiation wi... | 01/25/1977 |
| 4004572 | Solar energy collection and retrieval employing reversible photochemical isomerization A process for photochemical collection, storage, and retrieval of solar energy, including solar energy in the visible and near-infrared light spectrum, comprising: exposing to solar radiation of a trans-isomer of particular geometrically isomerizable comp... | 01/25/1977 |