...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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 |
| 7019175 | Catalytic oxidation process The invention provides a process for the catalytic oxidation of an alkane, which comprises contacting the alkane with a source of oxygen in the presence of a catalyst comprising a compound of the formula (2) where R1 and R2 independently repres... | 03/28/2006 |
| 6994888 | Coating composition with epoxy- polyester polymer A protective coating composition in an organic liquid carrier comprising a polymeric film forming binder, the polymeric binder comprising by weight: (a) 50% to 100% of an epoxy-polyester block copolymer being the reaction product of a preformed epoxy re... | 02/07/2006 |
| 6957672 | Method for ensuring that coating compositions have correct color A method suitable for use in small trade stores or retail shops for assisting in providing the correct color or coating compositions mixed in the store or shop in which colorants (II) are added to a base paint (2), the base paint (2) being provided in ... | 10/25/2005 |
| 6903157 | Thickened aqueous coating compositions containing film-forming polymeric binder A thickened aqueous coating composition (preferably paints and the like or adhesives) containing a film-forming polymeric binder which produces dried coatings having less sensitivity to water by using a thickener which is autoxidisable. Preferred autoxidisable moiet... | 06/07/2005 |
| 6787188 | Coating composition A protective coating composition in an organic liquid carrier comprising a polymeric film forming binder, the polymeric binder comprising by weight: (a) 50% to 100% of an epoxy-polyester block copolymer being the reaction product of a preformed epoxy resin an... | 09/07/2004 |
| 6767956 | Extrusion process A process for producing an aqueous dispersion of a polymer in an aqueous medium having a viscosity below 10 Pa.s, in which the polymer is dispersed in an aqueous medium in an extruder at a temperature above 100° C., the pressure inside the extruder being maintained... | 07/27/2004 |
| 6740703 | Thickened aqueous coating compositions containing film-forming polymeric binder A thickened aqueous coating composition (preferably paints and the like or adhesives) containing a film-forming polymeric binder which produces dried coatings having less sensitivity to water by using a thickener which is autoxidizable. Preferred autoxidizable moiet... | 05/25/2004 |
| 6740705 | Process for making poly (urethane-urea)/addition polymer composite particles A process for making poly(urethane-urea)/addition polymer composite particles which avoids the need to use a highly viscous solution of a prepolymer for the poly(urethane-urea). The process comprises dissolving diol and di-isocyanate in addition polymerisable monome... | 05/25/2004 |
| 6384132 | Environmentally friendly aqueous architectural coating compositions An environmentally friendly stable aqueous optionally structured water-resistant architectural coating composition (especially a paint) containing a film-forming binder polymer composed of a starch modified by the presence of carboxylic acid or inorganic ... | 05/07/2002 |
| 6306934 | Aqueous coating composition A protective coating composition for coating interior surfaces of beer, beverage, and food containers, as well as interior and exterior surfaces of can ends, comprises a polymeric binder of emulsion copolymerized ethylenic monomers in the presence of an u... | 10/23/2001 |
| 6221241 | Process for removal of sulphur together with other contaminants from fluids A process for the purification of a fluid stream containing a sulphur contaminant, such as hydrogen sulphide, and mercury, phosphine, stibine, and/or arsenic compounds as a second contaminant wherein said fluid stream is passed through a bed of a particul... | 04/24/2001 |
| 6214314 | Process for the preparation methanol and hydrogen Process for the co-production of hydrogen and methanol by steam reforming a hydrocarbon feedstock, condensing and separating steam from the reformed gas, synthesizing methanol from the resultant de-watered reformed gas without further compression, separat... | 04/10/2001 |
| 6200354 | Dyeing of textiles A method of dyeing cellulosic fibers or fabrics using pre-metallized acid dye by pretreating the fabric with a cationic agent having a plurality of cationic centers and optionally after treating the dyed material with a cationic polymer is disclosed. The ... | 03/13/2001 |
| 6123816 | Electrode and preparation thereof Preparation of an electrode comprising a substrate of a valve metal or of an alloy thereof having similar properties thereto and a coating thereon comprising at least an outer layer of an electrocatalytically-active material which comprises an oxide of at... | 09/26/2000 |
| 6114124 | Detection of APC proteins A human gene termed APC is disclosed. Methods and kits are provided for assessing mutations of the APC gene in human tissues and body samples. APC mutations are found in familial adenomatous polyposis patients as well as in sporadic colorectal cancer pati... | 09/05/2000 |
| 6106740 | Non-azeotropic refrigerant composition of CO2, R-125, R-143a and R-22 A non-azeotropic refrigerant is described comprising (A) carbon dioxide (CO2), (B) pentafluoroethane (R-125), (C) 1,1,1-trifluoroethane (R-143a) and (D) chlorodifluoromethane (R-22).... | 08/22/2000 |
| 6103679 | Macrocyclic musk mixtures Mixtures of at least two of the macrocyclic musk fragrances hexadecanolide, cyclopentadecanone and pentadecanolide and methods of using such mixtures are described. These mixtures possess substantivity to proteinaceous and cellulosic substrates which is s... | 08/15/2000 |
| 6039113 | Heat exchange catalytic reactor A heat exchange catalytic process and reactor of the shell-and-tube type having a plurality of tubes extending longitudinally through the shell from a tube fluid inlet region to a tube fluid outlet region and baffles extending transversely across the shel... | 03/21/2000 |
| 6030594 | Catalyst A catalyst unit for use in an exothermic reaction, such as ammonia oxidation, comprises a material effective as a catalyst for said reaction having a shape conforming to a disc or cone having a plurality of radially extending corrugations. The catalyst un... | 02/29/2000 |
| 6011188 | Multi-bed selective hydrogenation of acetylenes Compensation for catalyst activity decline in multi-bed selective hydrogenation of acetylenes in the presence of olefins by providing inter-bed heating so that the product from the first bed is heated before it is fed to the second bed, and the temperatur... | 01/04/2000 |
| 6007706 | Removal of sulphur together with other contaminants from fluids A process for the purification of a fluid stream containing a sulphur contaminant, such as hydrogen sulphide, and mercury, phosphine, stibine, and/or arsenic compounds as a second contaminant wherein said fluid stream is passed through a bed of a particul... | 12/28/1999 |
| 5990359 | Process for the production of fluoromethylhexafluoroisopropylether Process for producing Sevoflurane anaesthetic which comprises reacting hexafluoroisopropyl alcohol with essentially pure bis(fluoromethyl)ether. The bis(fluoromethyl)ether is preferably obtained by the reaction of formaldehyde with hydrogen fluoride.... | 11/23/1999 |
| 5968368 | Purification process A process for purifying a crude material containing one or more desired compounds in impure form id described. The process comprises the steps of (1) passing the crude material through a chromatography column packed with a particulate absorbent solid usin... | 10/19/1999 |
| 5962753 | Process for the manufacture of pentafluoroethane Process for the manufacture of pentafluoroethane HFC 125! by reaction of perchloroethylene with hydrogen fluoride in the vapor phase over a fluorination catalyst in a fluorination reactor with recycle of dichlorotrifluoroethane HCFC 123! and chlorotet... | 10/05/1999 |
| 5959178 | Modification of lignin synthesis in plants The biosynthesis of lignin in plants is regulated by insertion into the plant genome by altering the plant's ability to synthesise the enzyme O-methyl transferase, an enzyme involved in the lignin biosynthetic pathway. Production of O-methyl-transferase m... | 09/28/1999 |
| 5928985 | Copper catalysts Stabilization of a reduced copper catalyst by a) passivating the catalyst by passing a gas stream that is free of reducing gases and which contains 0.05 to 0.5% by volume of oxygen and an amount of carbon dioxide at least twice the amount of oxygen throug... | 07/27/1999 |
| 5928479 | Process for the purification of pentafluoroethane A process for the purification of pentafluoroethane by removing chloropentafluoroethane therefrom which comprises adding to the impure pentafluoroethane a component which undergoes a non-ideal interaction with chloropentafluoroethane and/or with the azeot... | 07/27/1999 |
| 5897845 | Absorbents Absorbent granules comprising an intimate mixture of particles of alumina trihydrate, 0.5 to 2 parts by weight of particles of a sodium component selected from the group consisting of sodium carbonate, sodium bicarbonate and mixtures thereof per part by w... | 04/27/1999 |
| 5891323 | Purification process Regeneration of an adsorbent bed on to which impurity compounds, e.g. sulphur compounds, have been adsorbed by means of a gas stream to desorb the impurity compounds. The gas stream containing the desorbed impurity compounds is then passed over a catalyst... | 04/06/1999 |
| 5852205 | Catalytic process Production of aziridines comprising reacting an ethylenically unsaturated compound, such as styrene or methyl cinnamate, with a nitrene donor, such as (N-(p-tolylsulphonyl) imino) phenyliodinane in the presence of an acidic zeolitic material having a pore... | 12/22/1998 |
| 5812173 | Thermal transfer printing Dye diffusion thermal printing method and apparatus, particulary for the preparation of 35 mm format slides using a laser as the source of thermal stimulii, in which each successive dye coat of a dye ribbon on which the dye coats are in the form of stripe... | 09/22/1998 |
| 5807923 | Process of emulsion polymerization A process of oil-in-water emulsion polymerisation carried out in the presence of emulsifiers that are polyoxyethylene half ester of vic-dicarboxylic acids which give latices that are stable especially to coagulation by electrolytes, shear and/or freezing ... | 09/15/1998 |
| 5800795 | Hydrogen fluoride recovery process Process for the recovery of hydrogen fluoride (HF) from a mixture, preferably an azeotropic mixture, of HF with water and/or an organic compound such as 134a, 125 or 133a, which comprises contacting the mixture with lithium fluoride or an alkaline earth m... | 09/01/1998 |
| 5795083 | Thermal transfer ribbon cassette A thermal transfer ribbon cassette comprises a supply (1B), a take-up spool (1A) and a molded casing (10); each spool having end portions (2, 3) and a bobbin portion (4) on which is wound one end of the transfer ribbon (5), the molded casing having locati... | 08/18/1998 |
| 5786297 | Thermal transfer printing receiver sheet A receiver sheet for diffusion transfer printing comprising a substrate having thereon a dye receiver layer comprising a dye receptive polymer and the reaction product of a first compound, which is a resin, having at least two reactive functional groups a... | 07/28/1998 |
| 5772897 | Continuous oxidation process using a hypochlorite solution A process of continuous decomposition of oxidizable materials in aqueous media, e.g. pollutants in effluents, by catalytic reaction with an oxidant, e.g. hypochlorite or hydrogen peroxide, in aqueous solution using a fixed bed of a particulate catalyst of... | 06/30/1998 |
| 5770550 | Surfactants Surfactants of the general formula (I): Y.A1.OC.(HR)C.C(HR1).CO.A.(Cm H2m O)n.R2 or (II): Y.A1.OC.(HR)C.C(HR1).CO.A.(Cm H2m O)n.C.sub.p | 06/23/1998 |
| 5763704 | Production of difluoromethane There is provided a process for the production of difluoromethane which comprises contacting a dichloromethane with hydrogen fluoride in the presence of a fluorination catalyst comprising zinc or a compound of zinc and metal oxide, fluoride or oxyfluoride... | 06/09/1998 |
| 5763707 | Production of pentafluoroethane There is provided a process for the production of pentafluoroethane which comprises contacting a hydrofluorochloroethane having the formula: C2 H1 Cl1+x F1+y wherein x and y are each independently 0,1,2 or 3 pro... | 06/09/1998 |
| 5756644 | Polyesters A process of producing a cyclic polyester oligomer mixture using a solid support system is described. A preferred cyclic polyester mixture contains at least one cyclic polyester oligomer containing 15 or more repeat units. Cyclic ethylene terephthalate ol... | 05/26/1998 |