...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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 |
| 8114210 | Binders An un-reacted substantially formaldehyde free curable binder solution for binding loose matter consists essentially of a solution obtainable by dissolving a reducing sugar, an ammonium salt acid precursor optionally a carboxylic acid or a precursor thereof and optio... | 02/14/2012 |
| 7678187 | Compositions comprising a (poly)amine and a carboxylated carbohydrate The invention provides a composition comprising an aqueous solution of 0.1-20 wt. % of a poly(amine) and 0.1 to 50 wt. % of a carboxylated carbohydrate having an average molecular weight of at least 100,000 D and a degree of carboxyl substitution of at least 5%, whi... | 03/16/2010 |
| 7306679 | Composition and sugar refining process Disclosed is a lecithinated sugar composition wherein lecithin is present in the sugar composition at not more than about 200 parts per million. Also disclosed is a process for increasing the yield of raw sugar from a clarified sugar juice stream. Further disclosed ... | 12/11/2007 |
| 7255731 | Use of particular polysaccharides as admixtures for mineral materials The subject of the present invention is the use of particular polysaccharides as admixtures for mineral materials, especially as admixtures for mineral binders. These polysaccharides have, characteristically: a weight-average molec... | 08/14/2007 |
| 7176173 | Washing liquid for semiconductor substrate and method of producing semiconductor device An object of the present invention is to provide washing liquid for semiconductor substrate capable of removing grinding grains of silica, alumina or the like in a polishing agent and polishing trashes of copper, and capable of leaving little organic substance due t... | 02/13/2007 |
| 6896725 | Aldehyde-containing polymers as wet strength additives The invention concerns the use of a water-soluble or water-dispersible polymer having a molecular weight of at least 800, containing at least 5 aldehyde groups per molecule and at least 1 carboxyl group per molecule, the ratio of aldehyde groups to carboxyl groups b... | 05/24/2005 |
| 6736936 | Coating color A coating color composition comprising an aqueous dispersion of (a) a pigment, (b) a binder, (c) a fluorescent whitener and (d) a water-soluble polymer formed from a water-soluble ethylenically unsaturated monomer or monomer blend, characterised in that the water-so... | 05/18/2004 |
| 6624210 | Coating and excipient agent for oral or dermal dosage forms The invention relates to a method for the production of a coating and excipient agent for oral or dermal dosage forms, consisting of (a) 35-98% by weight of a copolymer consisting of radically polymerized C1-C4 esters of acrylic or methacrylic acid and ad... | 09/23/2003 |
| 6461422 | Pressure sensitive ink jet media for digital printing The problems of applying ink jet inks to various known coating surfaces so as to overcome smearing, poor resolution and attack by water etc., is overcome by the use of the new ink jet receptive media. The media comprises in combination: (1) a waterproof i... | 10/08/2002 |
| 5942029 | Mechanically bonded fiber mulch A mechanically-bonded, water-absorbent fiber mulch including natural and crimped synthetic fibers that are intimately mixed to form a mechanically-bonded fiber mulch.... | 08/24/1999 |
| 5800602 | Use of inclusion compounds of cyclic polysaccharides as charge control agents Inclusion compounds consisting of a host compound, which is a cyclically linked polysaccharide having 3 to 100 monomeric saccharide units and forming a cavity in its molecular framework, and of one or more chemical compounds which are included in this cav... | 09/01/1998 |
| 5779782 | Mechanically bonded fiber mulch and process for producing same A mechanically-bonded, water-absorbent fiber mulch including natural and crimped synthetic fibers that are intimately mixed to form a mechanically-bonded fiber mulch. A water-absorbent polymer-based material is dispersed throughout the fiber mulch to incr... | 07/14/1998 |
| 5702515 | Stabilised solutions of polysaccharide The use together of (1) an aromatic compound containing a benzene ring bearing at least two substituents selected from the group consisting of hydroxy groups, primary amino groups and secondary amino groups and (2) a sulphur-containing compound containing... | 12/30/1997 |
| 5578118 | Natural polyphenolic-containing vegetable extract modified bitumen and anti-stripper compositions, method of manufacture and use The addition of from about 0.1 to about 1 parts by weight of a natural polyphenolic-containing vegetable extract (NPVE) per 100 parts of bitumens (particularly asphalt), coal tar, or other high boiling tars containing mixtures of aliphatic and aromatic hy... | 11/26/1996 |
| 5480479 | Wet powder film-forming compositions An improved wet powder, edible, film-forming composition for use in coating tablets and capsules consists essentially of powdered pigment particles, a film-forming, water soluble or water-dispersible, edible polymer and up to approximately 30% by weight o... | 01/02/1996 |
| 5417759 | Set retarding additive for cement slurries N-phosphonomethyl iminodiacetic acid may be used as an additive to retard the setting time of Portland cement.... | 05/23/1995 |
| 5334253 | Solution of certain five and six carbon atom carbohydrates A method for dissolving sorbitol, xylitol, mannitol, glucose and gluconic acid. Effective agents are dimethylsulfoxide, dimethylformamide or dimethylacetamide.... | 08/02/1994 |
| 5326390 | Organic vehicle and electronic paste An organic vehicle for electronic paste compositions is provided. The organic vehicle contains organo-soluble hydroxyalkyl substituted polysaccharide, a solvent for the polysaccharide, two hydrogen bonding components and inorganic oxide particulates havin... | 07/05/1994 |
| 5320672 | Associatively dispersed pigments and coatings containing said pigments The present invention resides broadly in a dispersion of particles in a fluid medium which contains a polymeric dispersing agent. The particles are hydrophilic particles. The fluid medium has less than 0.5% by weight electrolyte based on the weight of the... | 06/14/1994 |
| 5262328 | Composition for the clarification of sugar-bearing juices and related products A non-toxic composition, and method, for the clarification of raw sugar-containing juices, especially sugar cane juice, and related products, for analysis. A composition constituted of A) aluminum chloride hydroxide, B) lime and C) activated bentonite, be... | 11/16/1993 |
| 5221790 | Mixed polysaccharide precipitating agents and insulating articles shaped therefrom Mixed polysaccharide compositions, well adopted for flocculating/precipitating solid particulates from liquid dispersions thereof and for the shaping of insulating articles therefrom, comprise (i) at least one polysaccharide prepared by microbial fermenta... | 06/22/1993 |
| 5174816 | Surface treating agent for aluminum line pattern substrate A surface treating agent for an aluminum line pattern substrate is disclosed, comprising an aqueous solution containing 0.01 to 15% by weight of quaternary ammonium hydroxide represented by the general formula: ##STR1## wherein R is an alkyl group ha... | 12/29/1992 |
| 5110363 | Composition, and method for the clarification of sugar-bearing juices, and related products A non-toxic composition, and method, for the clarification of raw sugar-containing juices, especially sugar cane juice, and related products, for analysis. A composition constituted of A) aluminum chloride hydroxide, B) lime and C) activated bentonite, be... | 05/05/1992 |
| 5077052 | Chitosan derivatives useful in compositions for coating feedstuff additives intended for ruminants Novel organosoluble derivatives of chitosan, useful in coating biologically active feedstuff additives intended for ruminants, to provide coatings which are stable at a pH greater than 5 and which release the biologically active substance at a pH below 3.... | 12/31/1991 |
| 5058925 | Leach resistant ink for protecting documents from alteration and document protected thereby An initially colorless, chemically sensitive protective ink which can be readily printed or applied onto a document substrate and which reacts upon contact with an oxidizing agent to form a noticeable color change is provided. The protective ink, when pri... | 10/22/1991 |
| 5006171 | Ink eradicator for inks containing triaryl methane dyestuffs An aqueous ink eradicator solution for inks utilizing triaryl methane dyestuff and containing a reducing sulfur compound. the ink contains 20 to 50% by weight of sugar and/or a solid sugar alcohol and the reducing sulfur compound in an amount of 0.5 to 5%... | 04/09/1991 |
| 4986850 | Recording liquid:water composition with 25 cp minimum viscosity at 9:1 blend and 15 cp maximum viscosity at 1:1 blend A recording liquid including a mixture of a recording agent with a water-soluble organic solvent, and water, said mixture giving an aqueous solution having a viscosity of 25 cp or higher at a mixture-water ratio of 9:1 by weight, and giving an aqueous sol... | 01/22/1991 |
| 4877457 | Cationic aqueous bituminous emulsion-aggregate slurries preparation Cationic aqueous bituminous emulsion-aggregate slurries are disclosed to be formed with cationic emulsions prepared at elevated temperatures by emulsifying bitumen, such as an asphalt, in water with a cation-active emulsifier which is the product of the r... | 10/31/1989 |
| 4857110 | Agent for improving the printability of paper and board An agent for improving the printability of paper and board, essentially comprising 50 to 95% by weight of water, and 5 to 50% by weight of a mixture of I. 1 to 50% by weight of (a) an organic quaternary ammonium salt having at least one C8 -C22... | 08/15/1989 |
| 4836853 | Algin based dental impression material containing biocidal component A dental impression composition comprising alginate material and biocidal component. A method for reducing microorganism contamination in alginate dental impressions comprising preparing a mixture comprising alginate, water and biocide.... | 06/06/1989 |
| 4820520 | Antiseptic agent for food and drink and method of antiseptic treatment thereof Disclosed is an antiseptic agent for food and drink, which comprises, as an effective ingredient, a pectin decomposition product having a molecular weight of 600 to 5000. This antiseptic agent is very effective for improving the preservability of food and... | 04/11/1989 |
| 4761184 | Formaldehyde binder A formaldehyde binder containing at least one organic hydroxy compound, at least one amide, and water. This binder is suitable for use in preparing boards from lignocellulosic materials using adhesive based on formaldehyde.... | 08/02/1988 |
| 4735659 | Compositions and a process for preparing water dispersible polymers Compositions of water soluble polymers coated with hydrophobic fumed silica are readily dispersed in water. A method for improving the water dispersibility of a water soluble polymer is disclosed.... | 04/05/1988 |
| 4670550 | Biopolymer formulations and processes for preparing them Biopolymer formulation, in particular a polysaccharide-containing water in oil emulsion, process for preparing such emulsions and process for concentrating these emulsions. Aqueous systems thickened by the incorporation of biopolymer emulsions.... | 06/02/1987 |
| 4670167 | Biopolymer formulations and processes for preparing them Biopolymer formulation, in particular a polysaccharide-containing water in oil emulsion, process for preparing such emulsions and process for concentrating these emulsions. Aqueous systems thickened by the incorporation of biopolymer emulsions.... | 06/02/1987 |
| 4613631 | Crosslinked polymers for enhanced oil recovery Polymers used in enhanced oil recovery operations, including polysaccharides, polyamides and cellulose derivatives may be crosslinked by the use of organic nitrogen compounds bearing at least two positively charged nitrogen atoms. Suitable crosslinking ag... | 09/23/1986 |
| 4520139 | Pectin and related carbohydrates for the preparation of polyurethane foams Gel forming polysaccharides such as pectin react with polyisocyanates to form useful polyurethane foams.... | 05/28/1985 |
| 4404306 | Blends of water reducible organic materials and aqueous metal ammine siliconate solutions Aqueous metal ammine siliconate solutions are the reaction products of selected metals or metal derivatives, selected mono-organosilicon materials, certain alkaline nitrogen compounds having the formula R--NH2, and water. Amorphous materials ar... | 09/13/1983 |
| 4329177 | Alkali metal silicate binder compositions A binder composition in aqueous solution, suitable for use in the production of foundry sand moulds and cores is obtained by mixing (i) an alkali metal silicate (ii) a substantially water soluble carbohydrate selected from monosaccharides, disaccharides, polys... | 05/11/1982 |
| 4194918 | Alkali metal silicate binder compositions The invention relates to alkali metal silicate binder compositions, particularly for use in the production of foundry moulds and cores. The binders of the invention are in aqueous solution and are obtained by mixing: (i) an alkali metal silicate, (ii) a substa... | 03/25/1980 |