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Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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| Number | Title | Issue Date |
| 7344591 | Stabilized suspension of titanium dioxide nanoparticles and methods of manufacture Titanium dioxide nanoparticles are formed using a dispersing agent to form nanoparticles with desired size, shape, and uniformity. The titanium dioxide nanoparticles are formed by reacting an inorganic titanium compound with water or ice to form an aqueous titanium ... | 03/18/2008 |
| 7326399 | Titanium dioxide nanoparticles and nanoparticle suspensions and methods of making the same Titanium dioxide nanoparticles are formed using a dispersing agent to form nanoparticles with desired size, shape, and uniformity. The titanium dioxide nanoparticles are formed by reacting an inorganic titanium compound with water or ice to form an aqueous titanium ... | 02/05/2008 |
| 7258922 | Compositions, methods and devices for enhancing landscaping or marker materials A method for treating a marker material includes combining at least one treatment for a marker material, a foaming agent and a solvent to form a marker composition, foaming the marker composition to form a foamed marker composition, and applying the foamed marker co... | 08/21/2007 |
| 7169224 | Process for increasing the ductility of high performance fiber-reinforced brittle matrix composites, and composites produced thereby Purposeful addition of crack-initiating voids in the form of low tensile strength particulates, particulates having low matrix interaction, or gas bubbles formed by chemical reaction, in a size range of 0.5 mm to about 5 mm, and preferably of a size commensurate wit... | 01/30/2007 |
| 7033430 | Cement-containing compositions and method of use A settable fluid cementitious composition which is fluid for sufficient time to be suitable for use in a flexible container to provide support in a mine said composition comprises (i) Portland cement in an amount from at least about 8% preferably 10%, (ii) a water s... | 04/25/2006 |
| 6997984 | Cement admixture A burned product containing 100 parts by weight of C2S, 10 to 100 parts by weight of C2AS, and 20 parts by weight or less of C3A; a cement admixture prepared by grinding the burned product; and a cement containing 100 parts by weight... | 02/14/2006 |
| 6989057 | Zeolite-containing cement composition A method and cement composition is provided for sealing a subterranean zone penetrated by a well bore, wherein the cement composition comprises zeolite, cementitious material, and water sufficient to form a slurry. ... | 01/24/2006 |
| 6964302 | Zeolite-containing cement composition Methods and cement compositions are provided for sealing a subterranean zone penetrated by a wellbore, wherein the cement composition comprises zeolite, cementitious material, and a mixing fluid. ... | 11/15/2005 |
| 6409818 | Disposable water resistant foamed concrete cover for bulk salt The present invention is directed to a composition and method for forming an inexpensive, semi-permanent cured foamed cementitious cover layer over deicing salt which is stored outdoors in large bulk mounds or piles and a salt pile or mound covered with s... | 06/25/2002 |
| 6284819 | Recording medium The present invention provides a recording medium comprising a substrate having a glossy coating thereon, wherein the glossy coating comprises a binder and first and second groups of particles, wherein: (a) the first group comprises metal oxide particles, wher... | 09/04/2001 |
| 6284867 | Highly efficient cement dispersants A substantially non-crosslinked polymer cementitious composition dispersant for the improvement of the fluidity of cementitious compositions comprising hydrophilic side chain substituted polyimide or polyamide backbone units, having at least some proporti... | 09/04/2001 |
| 6136950 | Highly efficient cement dispersants The invention is directed to a polymer dispersant comprising a substituted polyimide or polyamide backbone, having at least some proportion of oligomeric or polymeric grafted side chains including one of amides, esters, and thioesters, having the general ... | 10/24/2000 |
| 6033591 | Cellular thermal insulating material based on diatomaceous earth and method for its production A thermal insulating material with a cellular structure is disclosed which comprises a bound SiO2 -containing material converted to at least 90% into a tobermorite phase. The SiO2 -containing material is diatomaceous earth, the densi... | 03/07/2000 |
| 5854305 | Plugging compound for chemical fastening A plugging compound for the chemical fastening of anchor bolts, threaded sleeves and screws in drill-holes, comprising a reactive resin and--spatially separated therefrom--a curing agent for the resin, includes from 0.0005 to 2% by weight of a piperidinyl... | 12/29/1998 |
| 5852077 | Lightweight, waterproof, insulating, cementitious compositions and methods for forming and using such compositions A lightweight, cementitious composition and method which includes a noncementitious filler, Portland cement, bentonite, diatamaceous earth and lime. The noncementitious filler may be sawdust, rubber chips, flyash or combinations of two or more of these in... | 12/22/1998 |
| 5843222 | Modified cement and concrete compositions A cementitious composition comprising 0.1 to about 7.5 percent by weight of a solid residual oxidation product from the combustion of an aqueous emulsion of a naturally occurring asphalt from the Orinoco Belt of Venezuela which contains from about 100 to ... | 12/01/1998 |
| 5562767 | Manufactured aggregate composite Manufactured aggregates and/or composites having incorporated therein an asphaltic oxidation product.... | 10/08/1996 |
| 5465547 | Lightweight cementitious roofing A lightweight roofing shingle or tile having an elongated body with top and bottom surfaces that taper lengthwise of the body as provided by beveling of underside ribs. The shingle or tile has a composition consisting of expanded perlite, Portland cement,... | 11/14/1995 |
| 5378277 | Injection product for fine sands and other porous matter An injection product for fine sands and other porous matter. This product comprises, on the one hand, cement and an alkaline silicate and, on the other hand, an agent inhibiting the reaction between the above two constituents. Application is in the field ... | 01/03/1995 |
| 5287929 | Method of using dispersant compositions for subterranean well drilling and completion A dispersant for drilling fluids, spacer fluids, completion fluids, cement slurries and mixtures of drilling fluids and cement slurries used for drilling and cementing subterranean wells.... | 02/22/1994 |
| 5256602 | Forehearth colorant A non-melted, non-powder concentrated colorant material consists essentially of a flux that is not over 30% by weight of an alkali metal borate, a binder that is an alkali metal silicate and 35-60% V2 O5. The flux, binder and coloran... | 10/26/1993 |
| 5112405 | Lightweight concrete building product Compositions for lightweight, waterproof, cementitious materials comprise portland cement, aggregates, two admixtures, and water. A first admixture comprises a major portion of calcium chloride and minor portions of sodium silicate and a wetting agent. A ... | 05/12/1992 |
| 4853208 | Method of binding wastes in alkaline silicate matrix A method of detoxifying hazardous wastes containing mercury, zinc, selenium, arsenic, antimony, or thallium by mixing the waste with silicate and a setting agent which together form an alkaline silicate matrix. An additive other than the silicate and sett... | 08/01/1989 |
| 4772327 | Easy-working spray concrete Disclosed is a spray concrete which, even at a water-cement ratio of 0.45 to 0.55, is still easy to work, can be sprayed well, and sets and hardens rapidly. It contains, in addition to the conventional additives, additions of naphthalinesulfonicacid-forma... | 09/20/1988 |
| 4623469 | Method for rendering hazardous wastes less permeable and more resistant to leaching A method for treating liquid and semi-liquid wastes to render them fit for ultimate disposal, by first determining the ionic charge of the waste counter ions. An appropriate suspension of emulsified asphalt particles is then selected having an opposite pa... | 11/18/1986 |
| 4545820 | Soil stabilizer and method for stabilizing soil A soil stabilizing composition comprising Portland cement and a hydrated alkali metal silicate powder and the method of stabilizing soil comprising admixing the composition with a soil and compressing the mixture.... | 10/08/1985 |
| 4461644 | Light weight composition and a method of sealing a subterranean formation A light weight cement composition made from sea water and a method of sealing a subterranean formation utilizing the light weight cement composition. The light weight cement composition comprises a hydraulic cement, a silicate compound, sea water and a hy... | 07/24/1984 |
| 4377413 | Refractory composition for flow casting A refractory composition for flow casting consists essentially of 100 parts by weight of refractory material, 0.1 to 2 parts by weight of sparingly water-soluble aluminum tripolyphosphate, 0.2 to 3 parts by weight of alkali metal silicate, 0.5 to 5 parts ... | 03/22/1983 |
| 4316826 | Clay and cement mortars, methods of preparing them The invention relates to mortars made of clay, cement, water and an urea-formaldehyde or melamine-formaldehyde resin. Paraffin is added to the powdered cement and, just before shaping the mortar, there is added to said mortar sodium aluminate and sodium s... | 02/23/1982 |
| 4308068 | Concrete compositions The addition of a mixture of sodium silicate and a nonionic surfactant to a pre-concrete mix results in concrete having greater compressive strength. When the mix additionally contains sawdust and clay, light weight, insulative building material, which ap... | 12/29/1981 |
| 4050948 | Method of making lightweight cement slurries and their uses A method of making lightweight cement slurry which involves dissolving sodium metasilicate and an activator in mix water, and thereafter mixing Portland cement therewith. The activator may be calcium chloride, calcium formate, calcium oxide, a water solub... | 09/27/1977 |
| 3954677 | Sulfonated aromatic-formaldehyde condensation products Sulfonated aromatic-formaldehyde condensation products are prepared by reacting a sulfonated aromatic compound with formaldehyde to form a condensation product which is neutralized or rendered alkaline by the addition of an aqueous solution of sodium hydr... | 05/04/1976 |
