Did You Know...
...that the video game, Pong, was invented by a guy who graduated at the bottom of his engineering class? Nolan Bushnell spent more time running the games at a local amusement park than he did on his studies at the University of Utah. His dreams of working for Disney's amusement empire were dashed when the company wouldn't hire him. Taking a boring job, Nolan daydreamed about electronic versions of popular games. He invented Pong, the first video game, and went on to found Atari Co.
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| Number | Title | Issue Date |
| 7300514 | Photocatalytic granular mixture for mortar and concrete and its use The photocatalytic granular mixture for mortar and concrete includes a photocatalyst in the form of at least two granular classes with different B.E.T. specific surfaces. It has a photocatalytic activity greater than that of a monodisperse photocatalyst with a singl... | 11/27/2007 |
| 7086466 | Use of substantially hydrated cement particulates in drilling and subterranean applications The present invention relates to substantially hydrated cement particulates. More particularly, the present invention relates to compositions comprising substantially hydrated cement particulates and associated methods of use in drilling and subterranean application... | 08/08/2006 |
| 7047701 | Jointing compound or plaster for construction elements and its method of preparation A jointing compound or plaster for construction elements, particularly paper-faced plasterboards. This plaster includes, in percentages by weight with respect to the total weight of plaster 50 to 85% of a mineral filler; 1 to 20% of an organic binder dispersible in ... | 05/23/2006 |
| 6978835 | Methods of cementing in subterranean formations A method of retarding the set time of a cement composition comprising providing a cement composition that comprises water and a cement, and retarding the set time of the cement composition by including a copolymer retarder in the cement composition, wherein the copo... | 12/27/2005 |
| 6503318 | Conductive concrete composition The invention provides conductive concrete suitable for commercial and large-scale production. The conductive concrete uses carbonaceous particles as conductive phase, to achieve concrete with resistivities as low as 2 Ωcm and compressive strengths over ... | 01/07/2003 |
| 6406536 | Organic additives for the preparation of cementitious compositions with improved constancy of color Described herein is the use of a combination of organic additives that is particularly advantageous for the preparation of cementitious compositions having a high conservation of the degree of white, which contain in mass a photocatalyst that is able to o... | 06/18/2002 |
| 6355191 | Method and apparatus for the manufacture of cementitious slab products A method and apparatus for preparing single layer tiles or slabs from a mixture of a granulated stone material having a selected particle size, and from a slurry formed by cement, a quantity of between 0.25 and 0.36 parts by weight of water relative to th... | 03/12/2002 |
| 5985308 | Process for producing anti-microbial effect with complex silver ions Production of an anti-microbial effect in an alcohol or water based electrolyte is achieved by preparing silver materials that form complex ions other than Ag+, Ag2+, or Ag3+, and which produce an anti-microbial effect tha... | 11/16/1999 |
| 5935317 | Accelerated curing of cement-based materials A CO2 pre-curing period is used prior to accelerated (steam or high-pressure steam) curing of cement and concrete products in order to: (1) prepare the products to withstand the high temperature and vapor pressure in the accelerated curing envi... | 08/10/1999 |
| 5868940 | Method for on-site remediation of contaminated natural resources and fabrication of construction products therefrom Methods for on-site remediation of contaminated natural resources and fabrication of construction products therefrom. A mobile treatment facility is provided at the site of the contaminated natural resources. Contaminated sediment, soil, pulp and/or liqui... | 02/09/1999 |
| 5753251 | Anti-microbial coating for medical device Anti-microbial coatings and method of forming same on medical devices are provided. The coatings are formed by depositing a biocompatible metal by vapor deposition techniques to produce atomic disorder in the coating such that a sustained release of metal... | 05/19/1998 |
| 5637412 | Compressed hydraulically bonded composite articles The present invention relates to hydraulically bonded cement compositions and methods. More particularly, the present invention is directed to novel compositions and methods of hydrating hydraulic cement without mechanical mixing of the cement and water. ... | 06/10/1997 |
| 5635292 | Compressed low density hydraulically bonded composite articles Incorporation of solid removable aggregates into powdered cement which later completely dissolve, evaporate, volatilize, or melt leaving voids in the cement composition is discussed. Cementitious articles are prepared by manipulating powdered hydraulic ce... | 06/03/1997 |
| 5624492 | Heat treatment in the control of the setting of cement Portland cement particles having the characteristics of slow hardening is oduced by a process of heat treating portland cement particles in the temperature range from 1500° to 3000° C. for from 0.5 to 10 seconds and cooling to obtain particles containin... | 04/29/1997 |
| 5536533 | Process for producing fibrous composites, particularly double floor plates, as well as plates produced by this process A process for producing fibrous composite materials from feed stock formed reliminarily from a gypsum binder and chopped cellulose fibers, and saturating the mixture with water to the extent of at least 1.2 times its normal hydrated state, and beating the ... | 07/16/1996 |
| 5366549 | Method for fabricating fiber-reinforced slag gypsum cement-based, lightweight set articles A method is provided for making a fiber-reinforced slag gypsum cement lightweight hardened product. The method consists essentially of mixing (1) from 5 to 140 parts by weight of aggregates having a maximum size of not larger than 2000 μm to (2) 100 part... | 11/22/1994 |
| 5346547 | Method of making concrete electrically conductive for electromagnetic shielding purposes Method and apparatus for making electrically conductive concrete articles ed for electromagnetic shielding, the invention also includes the articles of manufacture formed according to the method. Concrete articles formed according to the method of the inv... | 09/13/1994 |
| 5328508 | Method for rapid hydration of cement and improved concrete A method is described for making concrete from an initially dry mixture including Portland cement, a fine aggregate, and a coarse aggregate. The method is effective for curing mixtures which contain rubble, as well as for mixtures which contain primarily ... | 07/12/1994 |
| 5268032 | Method for the controlled hardening of acid-setting binders and cements The present inventions relates to a method for the controlled hardening of cid-setting cements and binders by first providing an acid-setting binder within a selected mold. Mixing with the binder an electrolyte to form a paste or slurry within the mold. Su... | 12/07/1993 |
| 5252266 | Control of the hardening of binders and cements The setting or hardening reaction of binders and cements of the types which are alkali-activated or acid-activated is controlled by forming a paste of the binder or cement and a salt which, under electrolysis forms the activating agent, placing the paste ... | 10/12/1993 |
| 5245149 | Process and device for accelerating the drying of cement mixes Process for the accelerated drying of cement mixes includes the application to the cement mixes of electromagnetic microwaves. The device for the accelerated drying of cement mixes includes a chamber in the form of a tunnel, defined by a supporting framew... | 09/14/1993 |
| 5219222 | Method of mixing particulate materials in a mixing column A method of mixing materials includes a fluid medium, such as an aqueous fluid or a gas, continuously introduced into a mixing column for a time sufficient to allow the fluid to at least substantially fill the column. A predetermined amount of at least on... | 06/15/1993 |
| 4673437 | Concrete block additive and improved concrete blocks produced therewith An additive used in the production of concrete blocks comprises a mixture of water with attapulgite or peptized calcium bentonite. Problem concrete blocks which previously were normally subject to improper molding or cracking during the molding, unmolding... | 06/16/1987 |
| 4568390 | Concrete block additive and improved concrete blocks produced therewith An additive used in the production of concrete blocks comprises a mixture of water and sodium bentonite. Problem concrete blocks which previously were normally subject to improper molding or cracking during the molding, unmolding, handling and curing step... | 02/04/1986 |
| 4533395 | Method of making a leach resistant fixation product of harmful water-containing waste and cement A solid fixation product of harmful, water-containing waste materials and cement, which product is highly resistant to leaching by water and salt solutions. The product has a high content of 20 to 50% of waste materials based on the dry weight of the wast... | 08/06/1985 |
| 4419196 | Production of molded products based upon a two-component hydraulic mineral resin Molded products based on a two-component mineral resin are produced, starting from a mixture of magnesium oxide, magnesium chloride, and water by triggering therein through mechanical or electromagnetic vibrations an abrupt exothermic reaction, which prop... | 12/06/1983 |
| 4338135 | Microwave curing of cementitious material A method for manufacturing cementitious products are provided in which microwave radiation energy is applied to cementitious products that have been at least partially cured by a moist curing method such as low pressure steam, water vapor or autoclave cur... | 07/06/1982 |
| 4301356 | Heating unit and method for production thereof Heating unit capable of generating heat upon the passing of an electric current, which comprises a matrix of a hardened hydraulic material and electrically conductive fibers dispersed therein in an amount sufficient to impart electric conductivity and a m... | 11/17/1981 |
| 4230499 | Concrete composition for making concrete moldings and method for making such concrete moldings A concrete composition for making concrete moldings of high strength is provided which comprises 400-600 kg. of Portland cement per unit m3 of concrete, 3-30% by weight of insoluble (Type II) anhydrous calcium sulfate and 0.1-3% by weight of ce... | 10/28/1980 |
| 4229393 | Method of producing sand-lime bricks with a low bulk density A method for producing sand-lime bricks of low bulk density and having a green strength of at least 1 kp/cm2 in which at least 1% by weight of cement is added to a mixture of sand, lime and water and the mixture is then compacted in molds by vi... | 10/21/1980 |
| 4207115 | Internal sealant for concrete A method and composition are provided for making a finished concrete structure having a water-impervious surface. A particulate composition of a paraffin wax material, glyceryl fatty-acid esters, and stearic or palmitic acid is added to the aggregate phas... | 06/10/1980 |
| 4187118 | Concrete composition for making concrete moldings and method for making such concrete moldings A concrete composition for making concrete moldings of high strength is provided which comprises 400-600 kg. of Portland cement per unit m3 of concrete, 3-30% by weight of insoluble (Type II) anhydrous calcium sulfate and 0.1-3% by weight of ce... | 02/05/1980 |
| 4062913 | Method of reinforcing concrete with fibres The invention relates to the reinforcement of material with fibres, whereby the fibres are orientated by means of electrical fields. In this way, the fibres can also be concentrated on places which are especially subjected to stress so that a considerably... | 12/13/1977 |
| 4031684 | Decorative precast concrete boards and process for producing the same Decorative precast concrete boards having a pore-free decorative porcelain-tile-like, hewn-stone-like or relief surface and a porous core layer are provided. Such precast concrete boards are produced by applying inorganic cement mortar containing siliceou... | 06/28/1977 |
| 4017321 | Void free electrical cement-concrete Electrical insulation grade concrete is prepared by mixing the aggregate and cement with an excess of water and thereafter vacuum deaerating and vacuum dehydrating the resulting mixture.... | 04/12/1977 |
| 4008093 | Control method and equipment for charging ready-mixed concrete additives batchwise A control method for charging ready-mixed concrete additives batchwise which aims at keeping the slump of ready-mixed concrete within a certain range and making longer transportation by truck mixer possible without degrading the quality, where the slump o... | 02/15/1977 |
