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...that the first rickshaw was invented in 1869 by an American Baptist minister, the Rev. E. Jonathan Scobie, to transport his invalid wife around the streets of Yokohama?
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| Number | Title | Issue Date |
| 6881698 | Ion liquids derived from Lewis acid based on titanium, niobium, tantalum, tin or antimony, and uses thereof The ionic liquids according to the invention result from the reaction of a halogenated or oxyhalogenated Lewis acid based on titanium, niobium, tantalum, tin or antimony with an organic salt of formula X+A− in which A− is a halid... | 04/19/2005 |
| 6649560 | Bulk catalysts based on chromium and on nickel for the gas-phase fluorination of halogenated hydrocarbons Catalysts which are useful in the fluorination of halogenated hydrocarbons by HF in the gas phase are obtained by simple impregnation of a bulk chromium oxide with a solution of a nickel derivative, the chromium oxide used exhibiting a BET specific surfac... | 11/18/2003 |
| 6482383 | Method for preparing hydrazine hydrate A method for preparing hydrazine hydrate comprising: (a) reacting ammonia, hydrogen peroxide and methyl ethyl ketone in a working solution to form an azine; (b) separating the working solution from a mixture comprising the azine, methyl ethyl ketone oxime... | 11/19/2002 |
| 6251821 | Solid mixed oxide composition containing molybdenum, cobalt and bismuth, which is suitable for the manufacture of acrolein from propylene by a redox reaction A mixed oxide solid composition of the formulas (I): (a) Mo12 Co4.7 Bi1 Ni2.6 Fe3.7 W0.5 Sn0.5 Si1 K0.08 Ox ; (b) Mo12 Co3.5 Bi1... | 06/26/2001 |
| 6080893 | Process for the manufacture of acrolein from propylene by a redox reaction and use of a solid mixed oxide composition as redox system in the said reaction A mixed oxide solid composition of formula (I): Mo12 Wa Bib Fec Cod Nie Sif Kg Snh Ox (I) where Oࣘaࣘ5, 0.5ࣘb... | 06/27/2000 |
| 6025523 | Process for the manufacture of acrylic acid from acrolein by a redox reaction and use of a solid mixed oxide composition as redox system in the said reaction Solid mixed oxides composition of formula (I): Mo12 Va Srb Wc Cud Sie Ox(I) 2ࣘaࣘ14, 0.1ࣘBࣘ6, 0ࣘcࣘ12, 0ࣘdࣘ6, 0ࣘeࣘ15; x is the quantity of oxygen bonded to the other... | 02/15/2000 |
| 6019870 | Process for the preparation of delignified and bleached chemical paper pulps A process of dignifying lignocellulosic pulp with oxygen followed by treatment of the delignified pulp with a chelating agent, followed by washing, followed by treatment with hydrogen peroxide at an alkaline pH in the presence of an alkali metal silicate ... | 02/01/2000 |
| 5750810 | Method for coproducing difluoromethane and 1,1,1,2-tetrafluoroethane The present invention relates to the simultaneous manufacture of difluoromethane (F32) and 1,1,1,2-tetrafluoroethane (F134a) by pyrolysis of chlorodifluoromethane in the presence of hydrogen, working at a temperature above 500° C. in the absence of any c... | 05/12/1998 |
| 5600039 | Process for the preparation of 1,1,1,2-tetrafluoroethane The subject of the invention is a continuous process for the preparation of 1,1,1,2-tetrafluoroethane (134a) from 2-chloro-1,1,1-trifluoroethane (133a) and hydrofluoric acid in the gaseous phase in the presence of a chromium-based catalysts. According to ... | 02/04/1997 |
| 5252309 | Azine synthesis in the absence of CO2 Azines, well suited for hydrolysis into hydrazine, are prepared in high yields by reacting ammonia, aqueous hydrogen peroxide and a carbonyl compound reactant in the presence of a catalytically effective amount of a catalyst medium therefor, i.e., an aque... | 10/12/1993 |
