Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 8157887 | Metal recovery system A thermal system for separating out co-mingled metals in almost pure form, the system including a tunnel kiln having temperature zones through which the co-mingled metals are conveyed and progressively heated until at least one metal of the co-mingled metals melts t... | 04/17/2012 |
| 8137433 | Method of regenerating metal, regenerated metal, material for lithographic printing plate bases, and lithographic printing plate A metal regeneration method including: a melting furnace cleaning step of melting pure aluminum with an aluminum content of 99.5% by weight or higher in a melting furnace to clean the inside of the melting furnace; and a metal regeneration step of melting waste lith... | 03/20/2012 |
| 8048194 | System and process for recovery of cadmium telluride (CdTe) from system components used in the manufacture of photovoltaic (PV) modules A system and associated process are provided for recovering cadmium telluride (CdTe) that has plated onto components, such as components used in the manufacture of photovoltaic (PV) modules. The system includes a vacuum oven configured for maintaining a vacuum and b... | 11/01/2011 |
| 8038764 | Rhenium recovery from superalloys and associated methods A method of recovering rhenium from rhenium-containing superalloy scrap is provided. The superalloy is usually a nickel-based superalloy. The method includes the steps of forming an oxidation feedstock of flaky morphology of the superalloy scrap, and oxidizing the o... | 10/18/2011 |
| 7976611 | Continuous process and apparatus for recovering metal from metal and organic waste, by combustion of organic constituent of waste in rotary tube furnace Process for recovering metals from metal-containing wastes and materials, characterized in that the metal-containing waste is preferably introduced continuously into a process chamber, treated thermally with continuous intensive mixing, the organic components are co... | 07/12/2011 |
| 7972411 | Method for separating dross in soldering process Proposed is a method for separating dross in a soldering process for a printed circuit board using a tin bath containing liquid tin. The method includes collecting dross produced during the soldering process; grinding the dross to tin ash in the tin bath for allowin... | 07/05/2011 |
| 7951222 | Method for the recovery by melting of at least one non-ferrous metal, and product for the implementation of the method The invention relates in particular to a method for the recovery of at least one non-ferrous metal (11) contained in scrap (9), by melting the scrap (9) in a furnace (1), the method comprising: a step of... | 05/31/2011 |
| 7951221 | Process for the treatment of contaminated metal residues and apparatus for implementing it Disclosed is a process and apparatus for the treatment of divided metal residues contaminated by one or more organic compounds, including mixing, inside a chamber, of metal residues with at least one calcium/magnesium compound capable of reacting exothermically with... | 05/31/2011 |
| 7789936 | Methods and systems for removing copper from ferrous scrap Methods and systems for removing copper from ferrous scrap are described. Some amounts of copper in ferrous scrap are removed by oxidation and subsequent mechanical impact of the oxidized scrap. Further removal of copper from the solid scrap can be achieved by fluxi... | 09/07/2010 |
| 7780760 | Unit and method for the treatment of shredder residues and use of granulate fraction thus produced In a method and a system for sorting shredder residues of metal-containing wastes, in particular from vehicle body shells, shredder residues are separated into a shredder light fraction and a non-ferromagnetic fraction. The method and system provide for a raw-granul... | 08/24/2010 |
| 7367584 | Gas generating system A gas generator (10) includes an igniter (27) and first and second inflation gas generant compositions (52, 52′) positioned to enable fluid communication with the igniter (27) upon activation of the igniter. Flow regulators (54, 54 | 05/06/2008 |
| 7226494 | Secure postage payment system and method In a postage payment system, a secure integrated circuit (IC) card is used to manage postage funds, and create encrypted postage indicia. Among other things, the system is capable of performing charge-back accounting of postage expenses and generating mail contents.... | 06/05/2007 |
| 7217312 | Method of recycling metallic coated scrap pieces A method of recycling metallic coated scrap pieces wherein the coating layer liquidus temperature is lower than the core layer solidus temperature, such as brazing sheet scrap pieces, or metallic coated scrap pieces wherein the upper part of the melting range of the... | 05/15/2007 |
| 6932853 | Mechanical separation of volatile metals at high temperatures A method of operating mechanical separation devices at high temperatures to separate various volatile metals, metal halides and metal oxides to produce high purity materials. ... | 08/23/2005 |
| 6338446 | Method of removing a metallic coating layer from scrap metal pieces A metallic coating layer is removed at least partly from scrap metal pieces having a core and the coating layer on the core. The coating layer has a lower melting temperature than the core. The scrap metal pieces are agitated in a container with abrading ... | 01/15/2002 |
| 6332909 | Processing apparatus, processing system and processing method A processing apparatus capable of separating and recovering resins and metals, respectively, from an object being processed, which has resins and metals as its constituent, comprises a first gastight area (102), in which temperature and pressure are regul... | 12/25/2001 |
| 6139601 | Method of recycling simultaneously a plurality of oil filters A method of simultaneously recycling a plurality of used oil filters involves placing a plurality of the filters into a rectangular compartment having a top, opposite sides, a bottom, and first and second ends. Pressure is exerted on the oil filters in a ... | 10/31/2000 |
| 6126716 | Iron-base scrap preheating apparatus and method In order to preheat pieces of iron scrap of various sizes and shapes highly effectively while avoiding the fusion of the pieces of iron scrap, a rotary kiln type preheating furnace and a shaft type preheating furnace are arranged in parallel with each oth... | 10/03/2000 |
| 6080224 | Method for processing waste containing metal contaminants using a reducing agent The invention relates to a method for processing waste that contains contaminants. The contaminants may be metals modified by carbon, oxygen, phosphorus, or sulfur. The waste in the form of a powder is mixed with an ionic reducing agent in an inert liquid... | 06/27/2000 |
| 6007597 | Electron-beam melt refining of ferroniobium Niobium, Nb, is refined from FeNb by electron beam melt refining. The amount of the impurities in the FeNb which form suboxides with oxygen is optionally determined. Sufficient oxygen is added to form oxides with these impurities. The electron beam melt r... | 12/28/1999 |
| 6007599 | Method for re-utilizing scrap steels A methods for re-utilizing, for example, scrap steels are provided. A method is provided for separating Sn-containing oxides from steel by blowing Sn-containing oxides away from a steel using a gas. Also provided is a method of making a reclaimed steel by... | 12/28/1999 |
| 5849062 | Method for recovering metallic materials of gas generator for air bag To provide a method for taking out gas generators readily from waste vehicles and then recovering metallic materials of gas generators taken out efficiently. The method is comprised by a) crushing waste vehicles in which air bag apparatuses are installed ... | 12/15/1998 |
| 5755853 | Process for the treatment of solid residues containing metals, in particular residues from the cleaning of household garbage incineration smoke This process comprises; mixing (1) the solid residues with a solid reducing agent; treating (2) the mixture in a furnace at a temperature above 1000° C. to obtain (3) a vitrified product rendered poor in metals and an emission of gas enriched in metallic... | 05/26/1998 |
| 5698759 | Treatment of polyvinylchloride A method is described which allows two hazardous waste products, namely PVC and electric arc furnace dust, both of which have negative commercial value, to be combined to produce an iron oxide suitable for steel making and making pure cadmium lead and zin... | 12/16/1997 |
| 5575907 | Process for the recovery of raw materials from presorted collected waste, especially scrap electrochemical batteries and accumulators The invention relates to a process for the recovery of raw materials from presorted collected waste, especially scrap electrochemical batteries and accumulators in which the scrap (10)is first mechanically prepared and divided into coarse and fine fractio... | 11/19/1996 |
| 5567223 | Method for dealing with mercury-containing waste A method for dealing with mercury-containing waste including button-type batteries, wherein the waste is heated in a furnace while being agitated and in the presence of elementary selenium vapour in an amount sufficient to form mercury-selenide from essen... | 10/22/1996 |
| 5387273 | Process for removing copper in a recoverable form from solid scrap metal A process for removing copper in a recoverable form from a copper/solid ferrous scrap metal mix is disclosed. The process begins by placing a copper/solid ferrous scrap metal mix into a reactor vessel. The atmosphere within the reactor vessel is purged wi... | 02/07/1995 |
| 5350438 | Method and apparatus for removing plated metal from steel sheet scraps Metal plated steel sheet scraps are heated to a temperature in the range of about 200° C.-500° C. so that organic material adhered to the scraps is evaporated and removed. Then, the scraps from which organic material has been removed are heated to a tem... | 09/27/1994 |
| 5342428 | Separation of free lead from aluminum beverage cans A method for removing free lead from a feed stream of used aluminum beverage cans (UBC) to reduce the total lead content of the feed stream. The UBC material is shredded, heated to a temperature above the lead melting point, and agitated to cause the molt... | 08/30/1994 |
| 5294244 | Thermal reclamation method for the recovery of metals from air bag inflators A method of recovering an aluminum alloy and a stainless steel alloy from an air bag inflator 10 that has aluminum alloy parts, including an aluminum alloy housing 12 and non-aluminum alloy parts, including a non-aluminum gas filter 18. The non-aluminum p... | 03/15/1994 |
| 5232487 | Method of simultaneous disposal of solid and liquid wastes A method of simultaneous disposal of liquid and solid wastes comprises the steps of introducing liquid and solid wastes into a gasification reactor with a cooled reactor inner wall and liquid slag discharge and gasifying the liquid and solid wastes at a t... | 08/03/1993 |
| 5205857 | Method and apparatus for recovering substance adhered to object to be processed A method for recovering substance such as zincing or the like adhered to the surface of an object to be processed, by causing such materials to be evaporated in a vacuum. In this method, the object to the processed is placed in a furnace provided with hea... | 04/27/1993 |
| 5199975 | Method for processing used battery The invention relates to a method for recovering cadmium in used nickel-cadmium batteries by heat treatment. According to the invention, a plastic case for a battery can be separated from a battery body easily without leaking cadmium. High purity cadmium ... | 04/06/1993 |
| 5198018 | Pyrolysis process and apparatus A process and apparatus for the continuous pyrolytic decomposition of a feed material having an organic and an inorganic component and recovery of the inorganic component, carbon-free, for reuse in essentially the same material as from which it originally... | 03/30/1993 |
| 5186740 | Method for preheating scrap iron by pyrolysis of resinous residues contained therein, with total recovery of their energy content and improvement of the steelmaking cycle This method of preheating scrap iron mixed with plastic, rubber and resinous, ie organic, materials and intended for electric furnaces, in particular electric arc furnaces, is characterized by transforming the plastic, rubbery or resinous and like materia... | 02/16/1993 |
| 5112389 | Process for the removal of an embedding body from the embedded component A process and an arrangement are disclosed for the removal of a low-melting embedding body from a higher-melting embedded component. A groove is provided along a molding-in base of the component and by means of the widening of the groove via heatable elem... | 05/12/1992 |
| 4552342 | Method and apparatus for preheating and charging scrap in steelmaking Scrap metal for steelmaking in a converter is preheated by a heating installation and subsequently charged into a charging trough. The preheating takes place in a separate furnace which is aligned parallel to the charging trough. The furnace can be brough... | 11/12/1985 |
| 4518423 | Method for preparing a low residual alloy steel charge from scrap metal A process is disclosed for treating tin scraps such as tin cans and home scrap, to reduce the tin content of the scrap to a sufficient level to permit the scrap to be reprocessed in an electric furnace. In the process, the scrap metal is first shredded, o... | 05/21/1985 |
| 4517016 | Method for preparing a low residual alloy steel charge from scrap metal A process is disclosed for treating iron or steel base scraps such as automobile scrap vehicles to reduce the alloy content of the scrap to a sufficient level to permit the scrap to be reprocessed in an electric furnace. The process treats the entire scra... | 05/14/1985 |
| 4498523 | Continuous method for reclaiming, melting and casting aluminum scrap A continuous process is disclosed for the recovery of an aluminum alloy from aluminum scrap containing more than one alloy. The recovery is made in a manner which will conserve energy. The process comprises providing a feedstock containing at least two co... | 02/12/1985 |