Bizarre Patents
Pizza Pie With Concentric Rings of Crust
A pizza mold for forming a plurality of concentric raised ridges of dough (i.e., crust) on the surface of a pizza pie.
PatentStorm News
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 |
| 5749939 | Melting of NI laterite in making NI alloyed iron or steel A multiple stage process for obtaining Ni units from Ni laterite ores and sulfur-bearing Ni concentrates during production of nickel-alloyed iron, nickel-alloyed steel or nickel-alloyed stainless steel in a reactor equipped with top- and bottom-blowing me... | 05/12/1998 |
| 5743938 | Method of decarburizing refining molten steel containing Cr A method of decarburizing refining molten steel containing Cr in such a manner that oxygen gas, inert gas or a mixture of inert gas and oxygen gas is blown to the surface of bath of molten steel containing Cr in a refining chamber and to a position below ... | 04/28/1998 |
| 5575829 | Direct use of sulfur-bearing nickel concentrate in making Ni alloyed stainless steel A process for obtaining Ni units from sulfur-bearing nickel concentrate during refining a nickel-alloyed steel or a stainless steel. Sulfur of the concentrate is transferred to and held within the slag by controlling slag composition and temperature, degr... | 11/19/1996 |
| 5085691 | Method of producing general-purpose steel The invention contemplates smelting in a steelmaking unit a carbon-containing semiproduct, tapping it into a ladle, supplying to the ladle slag-forming materials, a reducer and thermally pretreated oxide materials containing alloying elements. The supply ... | 02/04/1992 |
| 4891063 | Process for stirring steel in a ladle with the aid of carbon dioxide A killed steel is stirred in a ladle with the aid of gaseous carbon dioxide. Before the beginning of the stirring in the ladle, there is added to the quantity of deoxidizer usually employed, a supplementary quantity of deoxidizer in the molten metal, the ... | 01/02/1990 |
| 4830666 | Removal of nitrogen from iron A method of reducing the nitrogen content in iron and iron alloys comprises introducing hydrogen into the melt in the form of a gas or hydrogen compound in sufficient quantity and for a sufficient time to reduce the nitrogen content and subsequently treat... | 05/16/1989 |
| 4762555 | Process for the production of nodular cast iron A process for the production of nodular cast iron is disclosed. The process comprises adding magnesium to molten iron and then desulphurizing the melt. Next, the melt is after-treated with a neutral gas. The neutral gas which is introduced into the melt m... | 08/09/1988 |
| 4741772 | Si contained ferroalloy addition as a weak pre-deoxidation process in steelmaking The present invention relates to a Weak Pre-Deoxidation Process (abbreviated as W.P.D. process) for producing Al-killed and/or Ti-Killed steel. In this process the proper amount of Si-containing ferro-alloy is added into molten steel during tapping, as We... | 05/03/1988 |
| 4690385 | Method for storing and maintaining the temperature of molten metal An apparatus (1) for storing and maintaining the temperature level of molten metals, such as a cast iron melt which has been treated with pure magnesium. The apparatus includes a heatable furnace chamber (3) having a pressure-tight cover (4) and an inlet ... | 09/01/1987 |
| 4681625 | Methods for simultaneously desulfurizing and degassing steels A method is provided for removing sulfur and hydrogen from steel by the steps of pouring a stream of steel, low in oxygen and free of slag into a vertical tube installed in a ladle which extends from the bottom of the ladle to the top of the ladle, provid... | 07/21/1987 |
| 4643766 | Process for refining phosphoric pig iron An improved two phase basic steel refining process for phosphoric pig iron is described which comprises forming a steel having a phosphorus content of not greater than 0.025% by using a substantially stoichiometric amount of lime to neutralize silicon and... | 02/17/1987 |
| 4636249 | Treatment of molten metal The invention is directed to a method of and apparatus for, introducing into a bath of molten metal (e.g. ferrous metal) contained in a vessel an alloying component (e.g. lead) or a reagent. The method includes the steps of connecting a plurality of plugs... | 01/13/1987 |
| 4615730 | Method for refining molten metal bath to control nitrogen A method for refining a molten metal bath is provided including introducing a refining gas containing substantially a combination of oxygen and nitrogen to the molten bath to reduce the carbon content of the bath to a selected level; thereafter an inert g... | 10/07/1986 |
| 4592777 | Method, process and composition for desulfurizing pig-iron melts A method and composition for desulfurization of hot metal is disclosed. To the hot metal there is added a composition comprising calcium carbide, a hydrogen releasing compound and magnesium.... | 06/03/1986 |
| 4586956 | Method and agents for producing clean steel A method for producing exceptionally clean steel wherein desulphurization agents are added to the tap ladle during the first one-third volume of steel tapped and then adding a reduced amount of a deoxidizing agent and then adding slag conditioner agents w... | 05/06/1986 |
| 4564390 | Decarburizing a metal or metal alloy melt A process is disclosed for reducing the carbon content of a melt of metal or metal alloy, carbon, and at least one strong oxide forming metallic alloying element from an initial value of about 0.1 wt % carbon to a final value of not less than about 0.003 ... | 01/14/1986 |
| 4560406 | Process for refining of chromium-containing molten steel The refining of chromium-containing molten steel by the treatments of decarburization, reduction, and desulfurization is improved in terms of consumption of argon gas used for blowing molten steel, amount of refractories of an AOD furnace, and CaO and CaF... | 12/24/1985 |
| 4551173 | Method for adjusting composition of molten steel in arc process Molten steel is refined in a converter and is poured from the converter to a ladle. A ferro-alloy containing a component to be adjusted is added to the molten steel as needed. An amount of the alloy to be added to the molten steel in the ladle is calculat... | 11/05/1985 |
| 4544405 | Method of producing steels of great purity and low gas content in steel mills and steel foundries and apparatus therefor A method for producing steels of high purity and low gas content in steel mills and steel foundries comprises melting the steel with the desired alloying components in a ladle, directing an inert gas and oxygen mixture to the ladle with the molten steel t... | 10/01/1985 |
| 4507149 | Desulfurization of fluid materials A method for desulfurizing fluid materials, comprising reacting sulfur to be removed with a rare earth compound, thereby forming rare earth sulfides, oxysulfides or mixtures thereof. The reaction is conducted under conditions of low oxygen potential. Rare... | 03/26/1985 |
| 4490172 | Method of melting and refining steel and other ferrous alloys Our invention is an improved process for removing gases and elements from a melt of molten ferrous metal; the process includes bubbling carbon dioxide through the melt, flushing the carbon dioxide from the melt with an inert gas and deoxidizing the melt w... | 12/25/1984 |
| 4481032 | Process for adding calcium to a bath of molten ferrous material A process for adding calcium to a bath of molten ferrous material is disclosed in which a calcium metal-containing wire is fed through a refractory lance into the bath. Recirculatory stirring of the molten ferrous material is accomplished with an inert ga... | 11/06/1984 |
| 4397683 | Desulfurization of fluid materials A method for desulfurizing fluid materials, comprising reacting sulfur to be removed with a rare earth compound, thereby forming rare earth sulfides, oxysulfides or mixtures thereof. The reaction is conducted under conditions of low oxygen potential. Rare... | 08/09/1983 |
| 4391633 | Process for dephosphorization, desulfurization and denitrification of chromium-containing pig iron A process for dephosphorization, desulfurization and denitrification of chromium-containing pig iron comprising contacting the melt of said iron with a slag comprising not less than 10% and less than 40% of CaO, not less than 5% and not more than 40% of i... | 07/05/1983 |
| 4373949 | Method for increasing vessel lining life for basic oxygen furnaces A method for increasing the life of the refractory lining of a basic-refractory-lined vessel for the production of steel by blowing oxygen into a ferrous melt from above the surface of the melt, comprising: (a) introducing into the vessel slag forming ingredie... | 02/15/1983 |
| 4238227 | Cleansing of steel by gas rinsing A method for deoxidizing steel to effect exceptional cleanliness wherein a relatively high amount of aluminum is added to the tap ladle before the first one-third volume of steel is tapped, and then adding conventional deoxidizers while the final two-thir... | 12/09/1980 |
| 4224058 | Methods of desulphurizing fluid materials A method for desulphurizing fluid materials such as molten iron, steel, stack gases, synthetic natural gases, boiler gases, coal gasification and liquification products and the like is provided in which one of the group rare earth oxides, rare earth fluoc... | 09/23/1980 |
| 4214899 | Method for the addition of a reactive metal to a molten metal bath A method for the addition of a reactive metal to a molten metal bath wherein the vapor pressure of the reactive metal at the bath temperature exceeds the total ambient pressure above the surface of the bath by establishing a gaseous atmosphere containing ... | 07/29/1980 |
| 4194903 | Method of producing steel with the lowest possible sulfur content by desulfurization of pig iron with magnesium coke A method of producing steel with the lowest possible desired sulfur content by desulfurization of pig iron with magnesium coke. The magnesium coke is introduced into the pig iron smelt which is to be desulfurized. An inert gas such as nitrogen is then int... | 03/25/1980 |
| 4161400 | Methods of desulphurizing fluid materials A method for desulphurizing fluid materials such as molten iron, steel, stack gases, synthetic natural gases, boiler gases, coal gasification and liquification products and the like is provided in which one of the group rare earth oxides, rare earth fluoc... | 07/17/1979 |
| 4072511 | Method of producing silicon containing cast iron A method of producing cast iron including the steps of providing an initial cupola charge having a silicon content less than the silicon content required, melting the charge, conducting the melt to a mixing vessel, substantially increasing the silicon con... | 02/07/1978 |
| 4043798 | Process for producing steel having improved low temperature impact characteristics Herein disclosed is a process for the addition of calcium to a molten steel which achieves an excellent yield and effect. The process is applied to molten steels having a chemical composition of carbon 0.02 to 0.55%, Silicon less than 0.50%, Manganese 0.2... | 08/23/1977 |
| 3971655 | Method for treatment of molten steel in a ladle Treatment of molten steel in a ladle, which comprises blowing inert gas into the ladle from its bottom, partially immersing a receptacle which covers the portion of the molten steel where the inert gas bubbles out and maintain non-oxidizing atmospheres wi... | 07/27/1976 |
| 3936297 | Method of producing austenitic stainless steel A substantially nonporous, austenitic stainless steel, and a method for producing it; consisting essentially of, in weight percent, from 10 to 30% chromium, from 15 to 45% manganese, from 0.85 to 3% nitrogen, up to 1% carbon, up to 2% silicon, balance ess... | 02/03/1976 |
