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| Number | Title | Issue Date |
| 7410547 | Method and device for inhibiting contamination of a workpiece A method and device for inhibiting contamination of a workpiece during the heating of a workpiece by a contaminant. The method includes placing the workpiece in a first container, and, in a first step, filling the first container with a protective gas. The first con... | 08/12/2008 |
| 6837948 | Process of production of compressor shoe A process of production of a compressor shoe superior in durability and reduced in manufacturing cost, wherein a process of quenching the shoe is performed in a vacuum, inert gas, or modified gas so as to prevent oxidation of the chrome and manganese of the surface ... | 01/04/2005 |
| 6290790 | Method for reducing the resistivity of the corrosion-induced oxide layer, and applications A method for reducing the electrical resistance caused by a corrosion oxide coating at the current-carrying transition of a chromium steel component includes annealing the chromium steel component a temperature of at least 950° C. and removing any oxide ... | 09/18/2001 |
| 6024809 | Fe-Ni alloy materials for electronic parts Fe--Ni alloy with improved etch factors for electronic parts are provided which are characterized by the composition consisting of, all by weight, 30-55% Ni, 0.8% or less Mn, 0.0030-0.0100% N, or 0.02% less Al, and the balance Fe and unavoidable impuritie... | 02/15/2000 |
| 5916388 | Method and apparatus for the treatment of stainless steel surfaces The invention includes an apparatus and associated method of increasing the pump-out efficiency of H2 O by, for example, reducing the staying time or the probability of sticking of H2 O or analogous molecules on a stainless steel sur... | 06/29/1999 |
| 5261976 | Control system for a soft vacuum furnace A control arrangement is disclosed for a conventional, atmosphere heat treating furnace which is operated at high temperature and fitted with a vacuum pump to draw rough or soft vacuum levels when heating the work to heat treat temperatures. The control a... | 11/16/1993 |
| 4992112 | Annealing and quenching method Annealing and quenching method and apparatus for the implementation of the method. An annealing and quenching method for materials or parts referred to as a charge that is finish-annealed in a vacuum annealing plant and that then proceeds into a sluice ch... | 02/12/1991 |
| 4612064 | Method for heat-treating a charge using a vacuum furnace A method and vacuum furnace for heat-treating a charge. Pursuant to the method, after the charge is placed in the receiving vessel, the latter is evacuated and flooded with inert gas. Subsequently, the charge is heated to the maximum permissible operating... | 09/16/1986 |
| 3945858 | Method of manufacturing steel for low temperature services A low alloy steel substantially consisting of Ni-Cr-Cu-Nb system and further adding 0.01 to 0.10% rare earth metals or their alloy thereto, and then being as only hot-rolled by 30 to 80% rolling rate at a temperature of less than 950°C. The steel exhibit... | 03/23/1976 |
