Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 4980493 | Process for preparing benzonitriles The invention relates to a process for the preparation of a compound of formula I ##STR1## R is alkyl, and X is bromine or iodine which process comprises: reacting a compound of formula II in a two phase system, said system comprising an aqueous... | 12/25/1990 |
| 4966416 | Fragmentation of an underground ore body The invention provides a process for converting subterraneous ore overlain by an adjacent formation of porous rock into an enclosed zone of fragmented ore by first blasting a void space in the porous rock and secondly explosively expanding the ore into th... | 10/30/1990 |
| 4822575 | Process for the purification of zirconium compounds The invention concerns processes for the preparation of zirconium compositions which on calcination form zirconia. The zirconium compositions are prepared by the addition of an ammonia source to an aqueous zirconium sulfate solution to give a solution pH ... | 04/18/1989 |
| 4818309 | Primer composition An explosive composition comprising (a) a water-in-oil emulsion comprising (i) a discontinuous aqueous phase comprising at least one oxygen-releasing salt, (ii) a continuous water-immiscible organic phase and (iii) an emulsifier, and (b) 20 to 75% w/w of ... | 04/04/1989 |
| 4803273 | 2-quinoxalinyloxy phenoxy compounds The invention concerns novel compounds of the formula I ##STR1## wherein: D and U are independently chosen from halogen, methyl and halomethyl; G is chosen from hydroxy, alkoxy, alkenyloxy, alkynyloxy, alkylthio, alkenylthio, alkynylthio, cycloalkoxy... | 02/07/1989 |
| 4795487 | Herbicidal cyclohexane-1,3-dione derivatives The invention concerns novel compounds of the formula I ##STR1## wherein: the substituent X is chosen from cyano, carbamoyl and thiocarbamoyl; Z is selected from hydrogen, methyl, C1 to C4 alkanoyl, sulfamoyl, dimethylsulfamoyl ... | 01/03/1989 |
| 4777880 | Blasting method with above and below surface delays A method of detonating explosive charges for the breaking of rock and ore comprises the use of two sets of components, one set within the explosive charge and the other set at the surface of the explosive. The set within the exposive comprises a detonator... | 10/18/1988 |
| 4710248 | Emulsion explosive composition An emulsion explosive comprising substantially an immiscible discontinuous oxidizer-phase dispersed throughout a continuous fuel phase with a modifier comprising hydrophilic and lipophilic moieties wherein the hydrophilic moiety comprises a carboxylic aci... | 12/01/1987 |
| 4684755 | Catalyzed process A transhydrogenation process for the conversion of alkanes to alkenes with high yields and extended catalyst life between regenerations comprises the pssing of an alkane combined with a suitable hydrogen acceptor over a catalyst bed, subject to the condit... | 08/04/1987 |
| 4680400 | Herbicidal cyclohexane-1,3-dione-5-isoquinoline derivatives The invention concerns novel compounds of the formula I ##STR1## wherein: A, B, D and E are selected from CH, N and N-Z wherein Z is selected from oxygen and the group YAn wherein Y is selected from alkyl and benzyl and An is an anion, and provided t... | 07/14/1987 |
| 4676849 | Gas bubble-sensitized explosive compositions This invention relates to the preparation of gas bubble-sensitized explosive compositions which are liquid during their manufacture. It is possible to achieve particularly fine bubble sizes and therefore enhanced explosive power by incorporating in the liquid ... | 06/30/1987 |
| 4655819 | Quinoxalinyloxy phenoxy proprionic acid derivatives as selective herbicides The invention concerns novel compounds of the formula I ##STR1## wherein: D and U are independently chosen from halogen, methyl and halomethyl; G is chosen from hydroxy, alkoxy, alkenyloxy, alkynyloxy, alkylthio, alkenylthio, alkynylthio, cycloalkoxy... | 04/07/1987 |
| 4643763 | Herbicidal cyclohexane-1,3-dione derivatives The invention concerns novel compounds of the formula I ##STR1## wherein: m is an integer selected from 1 to 4; n is zero or an integer selected from 1 to 4; x are selected from halogen, nitro, cyano, alkyl, substituted alkyl, hydroxy, alkoxy, alkylthio, ... | 02/17/1987 |
| 4640708 | Herbicidal cyclohexane-1,3-dione derivatives Compounds of the formula ##STR1## wherein: R5 is a bicyclic aryl or nitrogen-containing heteroaryl ring system such as naphthyl, quinolyl, isoquinolyl or tetrahydroisoquinolyl, optionally substituted by a wide variety of groups; R4 | 02/03/1987 |
| 4639267 | Herbicidal cyclohexane-1,3-dione derivatives The invention concerns novel compounds of the formula I and isomers thereof ##STR1## wherein: n is an integer selected from 2 to 4; m is zero or an integer selected from 1 to 3; X, which may be the same or different, are independently selected from haloge... | 01/27/1987 |
| 4631081 | Herbicidal cyclohexane-1,3-dione derivatives The invention concerns novel compounds of the formula I ##STR1## wherein: Z is selected from oxygen and the group --YAn wherein Y is selected from C1 to C6 alkyl and benzyl and An is an anion; k is zero or the integer 1; n is an inte... | 12/23/1986 |
| 4591103 | Asbestos process A process of recovering asbestos fibre from asbestos-bearing material comprising a first stage of preparing a fibre concentrate by the steps of comminution, classification and spiral concentration and a second stage of liberating and recovering fibre, whe... | 05/27/1986 |
| 4555263 | Herbicidal cyclohexane-1,3-dione derivatives The invention concerns novel compounds of the formula I ##STR1## wherein: R1 is selected from alkyl, alkenyl, alkynyl, cycloalkyl benzyl and substituted benzyl; A is selected from hydrogen, halogen, nitro, alkyl, alkoxy, alkylthio, alkenyl... | 11/26/1985 |
| 4481306 | Polymerization process A process of preparing cation exchange resins by radiation grafting with copolymerization onto a perhalogenated fluorine-containing hydrocarbon polymer at least one functional monomer of formula and at least one non-functional monomer of formula CF2... | 11/06/1984 |
| 4451581 | Ion exchange resin Thermally regenerable ion exchange resins, which are oxidation resistant, comprising polyetheramines derived from a poly (-haloepoxyethane) which has been crosslinked and aminated.... | 05/29/1984 |
| 4447475 | Process for composite polymer beads A process of incorporating non-polymeric particulate matter such as magnetic materials, pigments and minerals, into a cross-linked styrene-based polymeric matrix, which process comprises dispersing the non-polymeric particles with a polymeric dispersant i... | 05/08/1984 |
| 4420614 | Cyanophenoxybenzyl amines The invention concerns novel compounds of the formula I ##STR1## wherein A, B, D and E are chosen from hydrogen, halogen, C1 to C6 alkyl, C1 to C6 haloalkyl and C1 to C6 alkoxy and Z i... | 12/13/1983 |
| 4382982 | Process for protecting magnetic particles with chromium oxide A method for the preparation of magnetic particulate matter coated with a protective layer of chromium(III) hydroxide, oxyhydroxide or oxide, optionally crosslinked with polyacrylic acid, which process comprises a first step of depositing a hydrogel of ch... | 05/10/1983 |
| 4378439 | Purification of saline solutions A process for the demineralization of a bicarbonate- or bisulphite-bearing saline solution by means of amphoteric thermally regenerable ion-exchange resins and comprising the regeneration of the resins using as a regenerating agent a solution which is mor... | 03/29/1983 |
| 4369689 | Method for mixing and placing explosive compositions A process, and apparatus for performing same, of simultaneous mixing and placement of an explosive composition comprising a dispersion of an explosive component located in and immobilized by a solidified foamed non-explosive matrix.... | 01/25/1983 |
| 4314508 | Device with incendiary fusecord ignited by detonation A fuse device comprising incendiary fusecord and a means of igniting same by detonation.... | 02/09/1982 |
| 4288401 | Thermoplastic forming process Method and apparatus for stretch-forming a hollow article from a sheet of thermoplastic material at a temperature higher than 25° C. below the melting point wherein a stretching tool having at least one tip at a temperature lower than 50° C. below the m... | 09/08/1981 |
| 4268490 | Processes of making prilled ammonium nitrate compositions An improved process for the manufacture of ammonium nitrate prills and granules in which a water soluble aluminium salt is added to the process stream prior to the concentrate, which is then used in the prilling or granulating process, being formed.... | 05/19/1981 |
| 4230041 | Explosive fuze cord Fusecord having an exterior fibrous layer bonded to a thermoplastic sheath by adhesive derived from a water-bearing composition.... | 10/28/1980 |
| 4229545 | Matrix amphoteric thermally regenerable ion exchange resins Making amphoteric thermally regenerable ion-exchange resins by encapsulating poly (weak acid) ion exchange particles in a matrix of a polymer of opposite ion-exchange type in the presence of certain agents which inhibit the formation of deleterious salts ... | 10/21/1980 |
| 4221092 | Sleeve A fire barrier comprising an intumescent composition packed into the space between a thermoplastic pipe and an access hole or duct in a wall or floor through which the thermoplastic pipe is laid, said intumescent composition being characterized in that it... | 09/09/1980 |
| 4140561 | Explosive composition and process with rheology modifying agent A slurry explosive composition which contains fibrous material as a rheology modifying agent.... | 02/20/1979 |
| 4134780 | Explosive composition flowable over wide temperature range A process for making an explosive composition which process comprises heating a mixture comprising at least one oxygen releasing salt and at least one compound selected from a class of melt soluble fuel materials so as to form a melt, and adding to the me... | 01/16/1979 |
| 4033264 | Explosive cartridge Processes whereby water based explosive compositions comprising inorganic oxygen releasing salt material and a synthetic polymeric gelling agent may be converted to a cartridged form and wherein the cartridge container is based on paper are described. The... | 07/05/1977 |
