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| Number | Title | Issue Date |
| 6908420 | Dimensionally stabilized roller body A roller body for a roller, for pressure-treating or temperature-treating or combined pressure- and temperature-treating a web-shaped medium, for example paper, includes a casting body made of an iron-based alloy comprising graphite lamellae. Particular regions of t... | 06/21/2005 |
| 6749894 | Corrosion-resistant coatings for steel tubes A method of providing a protective, corrosion-resistant thin coating of a MCrX alloy on a carbon or low-alloy steel pipe or tube where M is one of nickel, cobalt or iron or combination thereof and X is one of molybdenum, silicon, tungsten or combination thereof, and... | 06/15/2004 |
| 6547894 | Method of forming a stabilizer bar A method of making a stabilizer bar from a tubular blank to which a mixture of an adhesive and powdered metal is applied to the inside surface of opposite ends of the tube. The adhesive is cured and then the fuseweld powder is placed in an oven to melt th... | 04/15/2003 |
| 6436202 | Process of treating a stainless steel matrix Heat resistant stainless steel may be treated in a low oxidizing atmosphere in a heat/soak-heat/soak sequence to deplete its surface of Ni and Cr which tend to catalyze coking of hydrocarbons in contact with the surface of the stainless steel, and enrich ... | 08/20/2002 |
| 6231690 | Method of oxidizing inner surface of ferritic stainless pipe A method of oxidation treatment of the inner surface of a ferritic stainless steel pipe comprising feeding an oxidizing gas into steel pipe from one end thereof while moving the steel pipe in a pipe-length direction, and heating the pipe in a heating furn... | 05/15/2001 |
| 5783000 | Method for heat treatment of steel, and products of steel A method for heat-treating steel, primarily strip-like or rod-like steel material, such as steel strip, steel sheet, steel rod or steel wire which have been rolled and heated in an oven or furnace to a surface temperature above about 900 degrees C. and th... | 07/21/1998 |
| 5069728 | Process for heat treating metals in a continuous oven under controlled atmosphere Heat treating metals by continuous longitudinal passage of metallic pieces in an elongated treating zone under controlled atmosphere having a high temperature upstream end where the controlled atmosphere comprises nitrogen and reducing chemical substances... | 12/03/1991 |
| 4622080 | Gun barrel, mandrel and related processes A gun barrel which is either smooth or has lands and grooves wherein the grooves are both wider and deeper at the chamber than at the muzzle. A mandrel for producing the gun barrel. Processes for producing the gun barrel including steps of heating, quench... | 11/11/1986 |
| 4407681 | High tensile steel and process for producing the same A high tensile steel which has a satisfactory yield strength of 60 kg/mm2 or more and excellent resistances to sulfide corrosive cracking and corrosion, and which comprises, as indispensable components, 0.05 to 0.50 wt % of C, 0.1 to 1.0 wt % o... | 10/04/1983 |
| 4401478 | Process for the handling and heat treatment of cast iron or steel pipes and tubes Concave rails 17, upon which a pipe which is to be treated by at least partial immersion can be placed, are fixed in the bottom of a furnace 1 which contains a treatment bath M. In order to guarantee that the pipe is immersed over the whole of its cross s... | 08/30/1983 |
| 4177088 | Process and installation for heat treating spheroidal or lamellar graphite cast iron pipes A process for effecting an annealing treatment of a spheroidal or lamellar graphite cast iron pipe. While the pipe is driven in rotation about the axis of the pipe, it is suspended substantially horizontally as it issues from the centrifugal casting machi... | 12/04/1979 |
| 4110092 | Method of apparatus for cooling inner surface of metal pipe A cooling method and apparatus wherein in the process of continuously hardening a metal pipe by heating the metal pipe as it passes through a heating unit and then cooling the inner surface of the metal pipe, an annular cooling nozzle having a large numbe... | 08/29/1978 |
| 4070209 | Method of producing a high pressure fuel injection pipe A steel blank pipe is first subjected to the step of cutting off the hair crack layer portion including the black skin layer of the inner peripheral wall surface of the blank pipe. Thereafter, the steel blank pipe is repetitively subjected to the process ... | 01/24/1978 |
