Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 8008518 | Process for producing dialkyl tin dialkoxides An object of the present invention is to provide a process for producing a dialkyl tin compound from a composition of deactivated forms of a dialkyl tin catalyst, and to provide a process for producing the dialkyl tin catalyst from the dialkyl tin compound and using... | 08/30/2011 |
| 7842828 | Method for separating out and recovering dialkyltin dialkoxide For an alkyltin alkoxide catalyst composition used in carbonate production, there is a problem that the alkyltin alkoxide catalyst composition is thermally decomposed by being heated in the production process, changing into an undistillable alkyltin alkoxide catalys... | 11/30/2010 |
| 7541482 | Process for production of alkyltin alkoxides A process for the production of alkyltin alkoxides which comprises subjecting at least one alkyltin compound selected from among organotin compounds having tin-oxygen-tin linkages as the starting compound and a hydroxyl compound as the reactant to dehydration to obt... | 06/02/2009 |
| 7393560 | Organo-metal compounds Organo-tin compound having the formula I: [R—(Y)a]b—SnX4-b wherein R stands for a polycyclic hydrocarbyl residue which optionally carries one or several substituents; Y stands for a bivalent linker group; X r... | 07/01/2008 |
| 7238824 | Derivatizing organometallic halides Methods, compounds, and kits are provided for derivatizing organometallic halide compounds. The methods include reacting an organometallic halide with a reagent to produce an analyte having desired properties. In a preferred form, the analyte has properties that ren... | 07/03/2007 |
| 7196210 | Isoreticular metal-organic frameworks, process for forming the same, and systematic design of pore size and functionality therein, with application for gas storage The ability to design and construct solid-state materials with pre-determined structures is a grand challenge in chemistry. An inventive strategy based on reticulating metal ions and organic carboxylate links into extended networks has been advanced to a point that ... | 03/27/2007 |
| RE39532 | Metallocenes containing ligands of 2-substituted indenyl derivatives, process for their preparation, and their use as catalysts The novel metallocenes of the formula I in which, preferably, M1 is Zr or Hf, R1 and R2 are alkyl or halogen, R3 and R4 are hydrogen, R5 and R6 are alky... | 03/27/2007 |
| 7049435 | Extractive methods for purifying sucralose The present invention relates to novel extractive methods for purifying sucralose. The present invention also relates to compositions comprising the sucralose preparations made by the methods of the present invention. ... | 05/23/2006 |
| 6998480 | Process for improving sucralose purity and yield This invention relates to processes for purifying sucralose by the use of an initial non-crystallization purification procedure followed by three or more sequential crystallization steps and recycle of the mother liquor remaining from each crystallization step to th... | 02/14/2006 |
| 6930193 | Isoreticular metal-organic frameworks, process for forming the same, and systematic design of pore size and functionality therein, with application for gas storage An isoreticular metal-organic framework (IRMOF) and method for systematically forming the same. The method comprises the steps of dissolving at least one source of metal cations and at least one organic linking compound in a solvent to form a solution; and crystalli... | 08/16/2005 |
| 6831189 | Methods and compounds for making coatings, waveguides and other optical devices A method comprises reacting a compound of the general formula R14-mMOR3m wherein m is an integer from 2 to 4, R1 is selected from alkyl, alkenyl, aryl, alkynyl or epoxy, and wherein R1 is nonfluorinated, or fully or partially fluorinated; OR3 i... | 12/14/2004 |
| 6166235 | Heterogeneous organotin catalysts This invention provides: (a) new organotin functionalized silanes: (b) a solid prepared by chemically bonding organotin functionalized silanes to a solid inorganic support containing surface hydroxy groups: (c) a solid catalyst prepared from said supporte... | 12/26/2000 |
| 6022822 | Organotin compound and catalyst for transesterification comprising the same The present invention provides a catalyst for transesterification comprising an organotin compound expressed by the following general formula (I): ##STR1## wherein, X, Y, and Z represent, respectively and independently, an alkoxyl group, alkylth... | 02/08/2000 |
| 5919964 | Method for the preparation of pure carboxyethyl germanium sesquioxide This invention provides a method for synthesizing pure carboxyethyl germanium sesquioxide that does not include any toxic impurities, such as germanium dioxide or metallic germanium. Neither of these toxic compounds is used as a starting material. The met... | 07/06/1999 |
| 5908497 | Water soluble titanium complexes and use as fiber glass sizing Organo-metal oxide chelates stable in aqueous compositions are provided by the reaction of metal alkoxide--where the metal is titanium, zinc, tungsten, or tin--and a polyalkylene glycol. Specific compounds are the reaction product of tetra alkyl titanates... | 06/01/1999 |
| 5759941 | Process for the preparation of dialkyltin dialkoxide from alkyl carbamate and alcohol A process for making a catalyst product which comprises reacting dialkyltin oxide with an alcohol and the corresponding alkyl carbamate at a temperature in the range between about 160 to 190° C. and at an autogenous pressure, wherein the catalyst product... | 06/02/1998 |
| 5703259 | Method for the preparation of pure carboxyethyl germanium sesquioxide A synthetic method for generating pure carboxyethyl germanium sesquioxide in the absence of toxic impurities. In the method germanium dioxide and metallic germanium are not used as starting materials. The method involves steps which ensure (a) absence of ... | 12/30/1997 |
| 5654457 | Method for synthesizing alkyl tin fluorides The application relates to a method for the synthesis of finely particulate organic tin (oxy) fluorides by reacting mono-organic or diorganic tin oxides or hydroxides with fluoric acid, the reaction being carried out in the presence of surface active comp... | 08/05/1997 |
| 5550266 | Method for the preparation of pure carboxyethyl germanium sesquioxide A synthetic method for generating pure carboxyethyl germanium sesquioxide in the absence of toxic impurities. In the method germanium dioxide and metallic germanium are not used as starting materials. The method involves steps which ensure (a) full reacti... | 08/27/1996 |
| 5545600 | Process for the preparation of dialkyltin dialkoxide A process for making a catalyst product which comprises reacting dialkyltin oxide with an alcohol and the corresponding dialkyl carbonate at a temperature in the range between about 50° to 200° C. and at a pressure in the range between about 75 to 600 p... | 08/13/1996 |
| 5475122 | Reaction products of dialkyltin oxide and polyhydric phenols These reaction products are suitable as catalysts with improved properties for curing coating binders.... | 12/12/1995 |
| 5391790 | Process for the preparation of bridged, chiral metallocene catalysts of the bisindenyl type A process for the preparation of a compound of the formula III ##STR1## comprising, deprotonating a solution or suspension of an indene of the formula I ##STR2## in a solvent or solvent mixture containing a base to give a suspension of a me... | 02/21/1995 |
| 5386046 | Method for the preparation of pure carboxyethyl germanium sesquioxide A synthetic method for generating pure carboxyethyl germanium sesquioxide in the absence of toxic impurities. In the method germanium dioxide and metallic germanium are not used as starting materials. The method involves the production of pure crystals of... | 01/31/1995 |
| 5374754 | Reaction products of dialkyltin oxide and polyhydric phenols Reaction products of dialkyltin oxide and polyhydric phenols. These reaction products are suitable as catalysts with improved properties for curing coating binders.... | 12/20/1994 |
| 5155248 | Polyurethane catalysts Reaction products of dibutyl tin oxide with selected aromatic aminocarboxylic acids, a process for their preparation and their use as catalysts for the preparation of polyurethanes.... | 10/13/1992 |
| 5149844 | Heterocyclic diorganotin catalysts for use in polyurethane systems Useful as catalysts for the reaction of a polyisocyanate or a partially blocked polyisocyanate with a hydroxy-containing compound are organotins of the formula ##STR1## where R is a C1 -C8 alkyl or an aryl group, Y is --CH2... | 09/22/1992 |
| 5075468 | Optionally chelated tin(IV) compounds useful as latent catalysts Optionally chelated tetracoordinated or pentacoordinated tin(IV) compounds having the general formula: ##STR1## are useful latent catalysts in compositions for the preparation of polyurethanes, or for the crosslinking of organopolysiloxanes, by ... | 12/24/1991 |
| 5043463 | Novel compounds for the control of microorganisms The subject invention concerns novel compounds and methods for inhibiting the growth of microorganisms. Specifically, tin-containing polymers which are selectively active against Candida albicans are described. The invention further concerns a unique proc... | 08/27/1991 |
| 5034551 | Process for recovery of organotin esters from reaction mixtures containing the same and re-use of the recovered organotin compounds A process which comprises extracting 1,3-diacyloxy-1,1,3,3-tetra(hydrocarbyl) distannoxane from a mixture containing 1,3-diacyloxy-1,1,3,3-tetra(hydrocarbyl)distannoxane, a sucrose-6-ester, and polar aprotic solvent, which process comprises the steps... | 07/23/1991 |
| 5008416 | Organogermanium compound, process for the preparation of same as well as use thereof An organogermanium compound of the formula ##STR1## wherein R1, R2, R3 and R4 are hydrogen atom, alkyl, substituted alkyl, phenyl or substituted phenyl, and R5 is a radical of ##STR2## ... | 04/16/1991 |
| 4987244 | Organotin catalysts for use in polyurethane systems Useful as catalysts for the reaction of a polyisocyanate or a partially blocked polyisocyanate with a hydroxy-containing compound are organotins of the formula R2 Sn[X--R1 --OH]2 where R is a C1 -C8 alkyl ... | 01/22/1991 |
| 4977287 | Organogermanium compounds and process for producing the same The present invention provides (A) an organogermanium compound represented by the general formula (1) ##STR1## wherein X is a halogen atom and R is a hydrogen atom, a lower alkyl group or a phenyl group, or by the general formula (2) ##STR2## ... | 12/11/1990 |
| 4968823 | Process for the fractional production of alkytin oxide A process for the fractional production of alkyltin oxides which comprises the steps of: subjecting a mono-, di- or trialkyltin halide to continuous hydrolysis at a temperature between 30° to 100° C. for a period of 10 minutes to 3 hours by the use of a... | 11/06/1990 |
| 4891436 | Process for preparing bis-methylene spiroorthocarbonate A process for the manufacture of bis-methylene spiro-orthocarbonate (BMSOC) wherein methyallyl chloride is subjected to the action of chlorine gas to form a mixture of 1,1-dichloromethyl ethylene and other chlorinated hydrocarbons which need not be and ar... | 01/02/1990 |
| 4816593 | Heterocyclic organotin compounds A new class of heterocyclic, mono-organotin compounds is described. The structure has a five membered ring containing tin, sulfur, and oxygen. The compounds exhibit excellent characteristics for stabilizing polyvinyl chloride.... | 03/28/1989 |
| 4795820 | Method of manufacturing tinorganic compounds and stabilizers A method of manufacture of tinorganic compounds.... | 01/03/1989 |
| 4785126 | 1,4-O-metallation process and composition This invention resides in a process for production of predominantly a 1,4-O-metallation product of a hydride of silicon, germanium, or tin with an ,ଲ-unsaturated carbonyl compound. The reaction involved takes place in the presence of a hetero... | 11/15/1988 |
| 4772628 | Organogermanium compound and antitumor agent composed mainly of this compound This invention discloses organogermanium compounds characterized in being expressed by the following formula: ##STR1## wherein R1, R2 and R3 respectively denote a hydrogen atom, a lower alkyl group, or a substituted o... | 09/20/1988 |
| 4650895 | Process for producing high purity metallic compound High purity organometallic compounds can be obtained by the process which comprises subjecting an organometallic compound in a liquid state under stirring to preliminary oxidation or hydrolysis in a proportion of about 0.1 to 50% by weight of the organome... | 03/17/1987 |
| 4474704 | Novel process A novel catalyst, possessing phase transfer properties contains an alumina or silica substrate bearing poly(oxyethylene) or poly(oxypropylene) moieties bonded through a silicon atom to the substrate.... | 10/02/1984 |
