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...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 7250509 | Method for preparing melamine salt of pentaerypolyol phosphoric acid A method for preparing a melamine salt of pentaerypolyol phosphoric acid is provided. The method comprises the following steps of: ball milling a mixture of pentaerypolyol and phosphorus pentoxide (P2O5) under a solvent-free reacting environmen... | 07/31/2007 |
| 7186455 | White flame-resistant uv-stable film made from a crystallizable thermoplastic, a method for production and the use thereof The invention relates to a white, biaxially oriented film which comprises a crystallizable thermoplastic as main componet and is characterized by further comprising at least one UV-stabilizer, at least one white pigment and at least one flame-proofing agent, which i... | 03/06/2007 |
| 6930138 | Flame retardant and smoke supressive additive powder for polymeric thermoplastics and thermoset resins A flame retarding and smoke suppressing additive powder that can be mixed with resins includes a carbonific material, a heat activated blowing agent, a heat activated halogen material, a phosphate material, and an inorganic material. The additive powder, when added ... | 08/16/2005 |
| 6905693 | Intumescent polymer compositions An intumescent polymer composition includes a matrix polymer, an acid catalyst source, a nitrogen source and an ionic phyllosilicate synergist having substantial cationic exchange capacity. Particularly preferred ionic phyllosilicates are montmorillonoids whereas pe... | 06/14/2005 |
| 6833467 | Method for preparing pentaerythritol phosphate alcohol by mechanochemical synthesis Mechanochemical synthesis of pentaerythritol phosphate alcohol is disclosed. The synthesis is carried out by ball milling a mixture containing P2O5, pentaerythritol, an alkyl benzene having one or two C1-C5 alkyl groups, and a metal halide cata... | 12/21/2004 |
| 6737526 | Method for preparing melamine salt of bis-(pentaerythritol phosphate) phosphoric acid Bis-(pentaerythritol phosphate) phosphoric acid is prepared by mechanochemical synthesis including ball milling a mixture containing P2O5, pentaerythritol, an alkyl benzene having one or two C1-C5 alkyl groups, and a metal halide catalyst, in a... | 05/18/2004 |
| 6455722 | Process for the production of pentaerythritol phosphate alcohol A process for the production of pentaerythritol phosphate alcohol (PEPA) comprising reacting in the liquid phase phosphorus oxychloride (POCl3) with pentaerythritol (PE) at a reaction temperature of at least about 100° C. in the presence of a ... | 09/24/2002 |
| 5902516 | Five-coordinate phosphorous compound, process for producing the same and its use A five-coordinate phosphorous compound which is useful as an stabilizer for organic materials and represented by the formula (I): ##STR1## wherein R1, R2, R4 and R5 independently represent hydrogen atom, an... | 05/11/1999 |
| 5847187 | Organic phosphorous compound, a process for producing the same and a use thereof An organic phosphorous compound represented by the following formula (I): ##STR1## wherein R1, R2, R5 and R6 represent a hydrogen atom, an alkyl group, a cycloalkyl group, an alkylcycloalkyl group, an aralkyl ... | 12/08/1998 |
| 5688847 | Polycyclic fluorophosphites useful as stabilizers Disclosed is a fluorophosphite compound of the formula ##STR1## This compound shows superior performance as a stabilizer in polymers, such as polypropylene, and polyvinyl chloride. Also disclosed is a process for making this compound.... | 11/18/1997 |
| 5565600 | Alkyl-aromatic diphosphites Novel alkyl-aromatic diphosphites having antioxidant and flame-retarding abilities and corresponding to the formula: ##STR1## can be prepared by reacting a 2,2'-bridged bisphenol corresponding to the formula: ##STR2## with pentaerythritol d... | 10/15/1996 |
| 5543544 | Bis(pentaerythritol phosphate alcohol) hydrogen phosphonate Bis(pentaerythritol phosphate alcohol) hydrogen phosphonate is a flame retardant compound. Such a compound can be prepared by the transesterification of a diphenyl phosphite with pentaerythritol phosphate alcohol.... | 08/06/1996 |
| 5536862 | Pentaerythritol phosphate alcohol-containing phosphonate and phosphite compounds (Pentaerythritol phosphate alcohol)(aryl) phosphonate compounds may contain from one to three pentaerythritol phosphate alcohol groups, such as bis(pentaerythritol phosphate alcohol)(pentaerythritol phosphate alcohol) phosphonate, and are useful as flame ... | 07/16/1996 |
| 5536863 | (Pentaerythritol phosphate alcohol) (cyclic neopentylene glycol) phosphite and phosphonate (Pentaerythritol phosphate alcohol)(cyclic neopentylene glycol) phosphite and phosphonate are disclosed as flame retardant compounds. The first named compound is formed by the reaction of pentaerythritol phosphate alcohol with a neopentylene glycol haloph... | 07/16/1996 |
| 5530150 | Phosphine compound, complex containing the phosphine compound as ligand, process for producing optically active aldehyde using the phosphine compound or the complex, and 4-[(R)-1'-formylethyl]azetidin-2-one derivatives A phosphine compound represented by one of the formulas: ##STR1## wherein R1 and R2, which may be the same or different, each represent a phenyl group or a phenyl group substituted with a halogen atom or a lower alkyl group or t... | 06/25/1996 |
| 5486640 | Process for preparing bis(pentaerythritol phosphate alcohol) alkylphosphonate A bis(pentaerythritol phosphate alcohol) alkylphosphonate compound, such as one comprising an alkyl group of from about one to four carbon atoms, preferably bis(pentaerythritol phosphate alcohol) methylphosphonate, is a flame retardant compound. Such a co... | 01/23/1996 |
| 5486639 | Process for preparing bis(pentaerythritol phosphate alcohol) alkylphosphonate A bis(pentaerythritol phosphate alcohol) alkylphosphonate compound, such as one comprising an alkyl group of from about one to four carbon atoms, preferably bis(pentaerythritol phosphate alcohol) methylphosphonate, is a flame retardant compound. Such a co... | 01/23/1996 |
| 5420326 | Bis(pentaerythritol phosphate alcohol) hydrogen phosphonate Bis(pentaerythritol phosphate alcohol) hydrogen phosphonate is a flame retardant compound. Such a compound can be prepared by the transesterification of a diphenyl phosphite with pentaerythritol phosphate alcohol.... | 05/30/1995 |
| 5362898 | Bis(pentaerythritol phosphate alcohol) alkylphosphonate A bis(pentaerythritol phosphate alcohol) alkylphosphonate compound, such as one comprising an alkyl group of from about one to four carbon atoms, preferably bis(pentaerythritol phosphate alcohol) methylphosphonate, is a flame retardant compound. Such a co... | 11/08/1994 |
| 5308902 | Biphosphites Biphosphites of formula I ##STR1## wherein m is 0, 1 or 2, n is 1 to 4 or 6, R1 is hydrogen or C1 -C4 alkyl and, if m=2, the radicals R1 are identical or different, and A is the radical of an at least n-hyd... | 05/03/1994 |
| 5235085 | Process for forming bis(pentaerythritol phosphate) carbonate Bis(pentaerythritol phosphate) carbonate can be formed by the reaction of pentaerythritol phosphate alcohol and dihydrocarbyl carbonate, such as diphenyl carbonate, preferably in the presence of a transesterification catalyst, such as an imidazole, and in... | 08/10/1993 |
| 5068388 | Bicyclictriarylphosphite antioxidant Novel bicyclictriarylphosphite antioxidants are useful in protecting, against oxidation, materials normally susceptible to oxidation.... | 11/26/1991 |
| 4801625 | Bicyclic phosphate ether, ester, and carbonate intumescent flame retardant compositions A flame resistant composition has (1) an organic polymeric substance (such as polypropylene) in intimate contact with (2) an ether, ester, or carbonate derivative of a bicyclic phosphorous compound (such as pentaerythritol phosphate) and (3) a gas produci... | 01/31/1989 |
| 4615824 | Mixing component for liquid crystal substances A mixing component for nematic liquid-crystalline substances used in optoelectronic components for the rendition of numbers, symbols and images. The object of the invention is to reduce, in components for nematic liquid crystal substances, the threshold a... | 10/07/1986 |
| 4454064 | Process for preparing pentaerythritol phosphate A process involving the reaction of pentaerythritol with phosphorus oxychloride. A solvent is used in the process, but not catalyst or amine (as a hydrogen chloride acceptor) is required.... | 06/12/1984 |
| 4305866 | Polyolefins stabilized with cyclic diphosphites A process for the preparation of mixed aromatic-aliphatic phosphites. The process involves the reaction of an alkylphenol with diphenyl-(or a lower dialkyl-) pentaerythritol diphosphite. The process is simple and inexpensive, and produces a relatively pur... | 12/15/1981 |
| 4290976 | Process for the preparation of phenol-free phosphites A process for the preparation of dialkylpentaerythritol diphosphites which are not contaminated by the presence of phenol. The process utilizes dichloropentaerythritol diphosphite as a starting material and since it does not contain a phenyl group there i... | 09/22/1981 |
| 4173602 | Process for preparing spirocyclic phosphorus compounds Bis(2-hydroxyalkyl) N,N-di(lower-alkyl)aminomethylphosphonates are described. These phosphorus-containing polyols can be incorporated into polyurethane foams to render the latter fire retardant. They have the advantage over closely related phosphorous-con... | 11/06/1979 |
| 4169118 | Phosphorus derivatives of pentaerythritol monobromohydrin Novel bicyclic phosphorus derivatives of 2,2-di(hydroxymethyl)-3-bromopropanol having the formula ##STR1## WHERE X IS ZERO OR ONE, NOVEL POLYPHOSPHONATE DERIVATIVES OF THE PHOSPHITE DERIVATIVES OBTAINED BY Michaelis-Arbuzov condensation and other ... | 09/25/1979 |
| 4118352 | Organic phosphites, process for their manufacture and their use as stabilizers The present invention is related to novel phosphites, their use as stabilizers for organic polymers, furthermore to stabilizer compositions containing these novel phosphites as well as the organic polymers being stabilized therewith. The novel phosphites ... | 10/03/1978 |
| 4112014 | O,O'-Bis(hydroxyalkyl) N,N-di(lower-alkyl)aminomethane phosphonates Bis(2-hydroxyalkyl) N,N-di(lower-alkyl)aminomethylphosphonates are described. These phosphorus-containing polyols can be incorporated into polyurethane foams to render the latter fire retardant. They have the advantage over closely related phosphorus-cont... | 09/05/1978 |
| 4053541 | Acetoacetic acid pentaerythrite phosphite ester Acetoacetic acid pentaerythrite phosphite ester may be easily mixed with polymers and improves their processing, color and weather stability.... | 10/11/1977 |
| 4025486 | Hydroxyphenylalkyleneyl isocyanurate/pentaerythritol phosphite combinations as ultraviolet light stabilizers for polyolefins Polyolefin polymers subject to degradation on exposure to ultraviolet light are efficiently stabilized using a combination of a hydroxyphenylalkyleneyl isocyanurate compound and a pentaerythritol phosphite compound. The stabilized compositions exhibit exc... | 05/24/1977 |
| 3968188 | Process for preparing the pentaerythritol ester of phosphorohalidous acid The pentaerythritol ester of phosphorohalidous acid is prepared by reacting pentaerythritol and a trivalent phosphorus trihalide in the presence of a catalyst. The pentaerythritol ester of phosphorohalidous acid is a useful intermediate in the preparation... | 07/06/1976 |
| 3959413 | Bicyclic phosphites Bicyclic phosphites are used alone or in combination with other stabilisers for stabilising polyolefines.... | 05/25/1976 |
| 3952072 | Stabilized polyphenylene ether type resin composition Stabilized polyphenylene ether type resin composition obtained by compounding a polyphenylene ether type resin with one or more of stabilizer-component such as those respectively (a) a high molecular phosphorous ester having at least three phosphorous est... | 04/20/1976 |
| 3944633 | Phosphate esters Flame-retardant polyester fibers containing 5 to 20% by weight of phosphate triester containing at least one mole of a hydroxymethyl bicyclic phosphate and 0-2 moles of a phenyl or naphthyl aryl compound as the sole flame-retardant additive or a two-compo... | 03/16/1976 |
