"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 |
| 6627100 | Current/voltage non-linear resistor and sintered body therefor A current/voltage non-linear resistor comprises a sintered body having a main component of ZnO, an electrode applied to a surface of the sintered body and an insulation material applied to another surface of the sintered body. The main component containin... | 09/30/2003 |
| 6586867 | Glass spacer of particular composition and electron-beam emitting display device A glass spacer for an electron-beam emitting display device is composed of non alkaline glass having almost the same linear expansion coefficient as that of soda-lime-silica glass. The glass includes SiO2 with 10 to 35 percent by mass, RO, in w... | 07/01/2003 |
| 6273969 | Alloys and methods for their preparation The present invention relates to an alloy comprising a first element A, a second element B, a third element C, and a fourth element D. In the alloy, first element A and second element B are present as a binary compound AB, and third element C and fourth e... | 08/14/2001 |
| 5523022 | Semiconductor compound Novel compound semiconductors are of the general formula, X5 YZ4, wherein X is a member selected from the group consisting of Cu, Ag and mixtures thereof, Y is a member selected from the group consisting of Al Ga, Tl and mixtures the... | 06/04/1996 |
| 5490953 | Semiconductor compound Novel compound semiconductors are of the general formula, X5 YZ4, wherein X is a member selected from the group consisting of Cu, Ag and mixtures thereof, Y is a member selected from the group consisting of Al, Ga, Tl and mixtures th... | 02/13/1996 |
| 5445766 | Superconductive conjugate photoconductive substances of the Bi-SrCa(LaY)-Cu-O system, a method for producing the same and superconductive optoelectronic devices using the same The disclosed substance has a composition of a general chemical formula of Bi2 -(Sr2 Ca1)1-x (La2 Y1)x -Cuy -Oz, where 0.4ࣘxࣘ1, y=2 and z=9-10.5, wherein said sub... | 08/29/1995 |
| 5427716 | Compound semiconductors and semiconductor light-emitting devices using the same Novel compound semiconductors are of the general formula, X5 YZ4, wherein X is a member selected from the group consisting of Cu, Ag and mixtures thereof, Y is a member selected from the group consisting of Al, Ga, Tl and mixtures thereof... | 06/27/1995 |
| 4729058 | Self-limiting capacitor formed using a plurality of thin film semiconductor ceramic layers The invention discloses a self-limiting ceramic capacitor characterized by high capacitance and transient voltage protective properties comprising a plurality of thin layers of a zinc oxide-based ceramic material having non-linear resistance characteristi... | 03/01/1988 |
| 4620968 | Monoclinic phosphorus formed from vapor in the presence of an alkali metal Monoclinic phosphorus is produced in a single source vapor transport apparatus comprising a sealed evacuated ampoule containing a mixture or compound of phosphorus and an alkali metal with the phosphorus to alkali metal ratio being 11 or greater. The char... | 11/04/1986 |
| 4490014 | Liquid crystal display with low capacitance zinc oxide varistor A highly multiplexed liquid crystal display employs nonlinear varistor elements exhibiting a particularly low capacitance value to effectively drive individual liquid crystal cells. Low varistor capacitance is achieved through controlled addition of Sb | 12/25/1984 |
| 4254200 | Electrophotographic element with bismuth oxide compound X-rays or γ-rays are detected by irradiating a beam of high energy radiation onto a crystalline bismuth oxide compound having the formula Bi10-14 X1 On wherein X is at least one element selected from the group consisting ... | 03/03/1981 |
| 4037005 | Method of making optical waveguides and product by the process An optical waveguide of niobium-doped lithium tantalate single crystal has excellent low loss waveguiding properties with strong electro-optic behavior. The waveguides are made by depositing a film of niobium on a polished lithium tantalate crystal, annea... | 07/19/1977 |
| 4035819 | Method of making a zinc sulphide ceramic body and a zinc sulphide ceramic body made thereby A method of making a zinc sulphide ceramic body having a low electrical resistance characterized by sulphurizing a starting oxide material consisting essentially of zinc oxide and from 0.01 atomic % to 6.0 atomic % of at least one oxide of a metal selecte... | 07/12/1977 |
| 3950176 | Semiconducting glasses and the method of preparation thereof Chemically stable, semiconducting glasses having a resistivity of from about 2 × 107 to about 6 × 108 ohm. cm contain 25 to 35 weight percent of vanadium pentoxide, 10 to 20 weight percent phosphorous pentoxide, and from... | 04/13/1976 |
| 3936397 | Semiconductive glass-ceramic articles This invention relates to the formation of semiconductive glass-ceramic articles. More particularly, the present invention relates to the formation of semiconductive glass-ceramic articles in the CdO--Bi2 O3 --B2 O3 | 02/03/1976 |