Patents Represented by Attorney Richard A. Dannells, Jr.
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Patent number: 4602344Abstract: The computer based remote tank telemetry system uses a method for updating a prior collected average level of substance in a tank. It continuously determines values of differential pressure within the tank and in accordance with the values of differential pressure determines the instantaneous level of substance within the tank. A prior collected average level is stored and is compared with each of the instantaneous values of level thus obtained. On the basis of this comparison a relative weighing factor is determined which weighs the relative contribution of the collected and instantaneous values in determining a new collected value. The new collected average is compared against a predetermined setpoint to determine whether the level of substance in the tank is too low. The results of this comparison can be displayed locally, and using a modem, communicated to a remote display. The method for determining the relative weighing factor has three tiers.Type: GrantFiled: October 25, 1984Date of Patent: July 22, 1986Assignee: Air Products and Chemicals, Inc.Inventors: Michael D. Ferretti, Brian L. Gabel, James A. Horton
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Patent number: 4593147Abstract: Neoalkanes of the formula R.sub.1 R.sub.2 R.sub.3 CCH.sub.3 are synthesized by hydrogenation of a neoacid of the formula R.sub.1 R.sub.2 R.sub.3 CCOOH or a neoalcohol of the formula R.sub.1 R.sub.2 R.sub.3 CCH.sub.2 OH, wherein R.sub.1, R.sub.2 and R.sub.3 are the same or different alkyl of 1-10 carbon atoms, at a temperature of 250.degree.-500.degree. C. over a copper oxide/zinc oxide catalyst.Type: GrantFiled: November 1, 1984Date of Patent: June 3, 1986Assignee: Air Products and Chemicals, Inc.Inventors: Stephen A. Butter, Ilse Stoll
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Patent number: 4588848Abstract: Neoalkanols of the formula R.sub.1 R.sub.2 R.sub.3 CCH.sub.2 OH are synthesized by hydrogenation of a neoacid of the formula R.sub.1 R.sub.2 R.sub.3 CCOOH, wherein R.sub.1, R.sub.2 and R.sub.3 are the same or different alkyl of 1-10 carbon atoms, at a temperature of 175.degree.-350.degree. C. and a hydrogen pressure of 10-100 Kg/cm.sup.2 over a copper oxide/zinc oxide hydrogenation catalyst.Type: GrantFiled: November 1, 1984Date of Patent: May 13, 1986Assignee: Air Products and Chemicals, Inc.Inventors: Stephen A. Butter, Ilse Stoll
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Patent number: 4558157Abstract: In the catalytic reaction of ammonia or formamide with CO and H.sub.2, exceptionally high yields of mono- and di-methyl formamide are obtained among the reaction products when the reaction is carried out in the presence of a platinum group catalyst soluble in the reaction medium, particularly a compound or complex of ruthenium or rhodium, employing a relatively non-volatile polar solvent which does not contain an active methyl function and which does not enter into the reaction producing formamide compounds. The pressure employed is in the range of 3000-8000 psi with a hydrogen partial pressure of at least 1500 psi, the preferred solvent being sulfolane.Type: GrantFiled: June 5, 1984Date of Patent: December 10, 1985Assignee: Air Products and Chemicals, Inc.Inventors: John A. Marsella, Guido P. Pez
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Patent number: 4552847Abstract: A method is provided for distinguishing between a solid surface or object treated by exposure to a reactive gas to have a measurable impermeability to a nonpolar fluid and a surface or object permeable to the fluid by the steps of:(a) contacting the surface or object being tested with a dilute solution of crystal violet for a fixed period of time,(b) separating the surface or object from contact with crystal violet solution and(c) making a visual or instrumental determination of the extent to which crystal violet has adhered to and/or penetrated into the surface or object.Type: GrantFiled: September 28, 1983Date of Patent: November 12, 1985Assignee: Air Products and Chemicals, Inc.Inventor: Bernard D. Bauman
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Patent number: 4544378Abstract: The invention relates to a process for adsorption of nitrogen from nitrogen-containing gases using faujasite-containing compositions in which the original hydrogen or monovalent forms are ion exchanged to their polyvalent form and then dehydrated in such a manner as to result in a preponderence of its polyvalent ions in a dehydrated/dehydroxylated state while maintaining substantially the same zeolite content. The resulting compositions, whose cations contained in the faujasitic portion are substantially in their dehydrated/dehydroxylated state, have been found to have surprisingly high selectivities and capacities for the separation of air into nitrogen and oxygen.Type: GrantFiled: May 24, 1984Date of Patent: October 1, 1985Assignee: Air Products and Chemicals, Inc.Inventors: Charles G. Coe, Steven M. Kuznicki
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Patent number: 4521600Abstract: Certain hydrogen phosphate and pyrophosphate compositions are employed as catalysts for organic condensation reactions. Particularly high conversions and selectivities are obtained by the use of synergistic mixtures of in cyclization reactions such as in the conversion of hydroxyethylpiperazine to triethylenediamine and morpholine to dimethylaminoethylmorpholine.Type: GrantFiled: May 24, 1982Date of Patent: June 4, 1985Assignee: Air Products and Chemicals, Inc.Inventors: James E. Wells, Victoria Eskinazi
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Patent number: 4519171Abstract: A quick-coupling device is provided for suspending a rotatable work-holding fixture from a driving device. The driving device is supported from the free end of a cantilever beam attached to the inner face of a door hinged to the framework of a thermally insulated treating cabinet. The driving device has a downwardly extending power take-off shaft terminated in an enlarged plug portion peripherally bevelled to nest in a mating connector affixed to the work-holding fixture thereby forming a friction drive for said fixture. The connector has a C-shaped slot through which the plug can be passed to support the fixture at the nesting mated surfaces. The arrangement is particularly designed for use in impact blasting of coated articles in batch operation, in which the reduced loading time is a highly important consideration.Type: GrantFiled: January 26, 1983Date of Patent: May 28, 1985Assignee: Air Products and Chemicals, Inc.Inventor: David J. Klee
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Patent number: 4514567Abstract: Strontium pyro-, monohydrogen, and dihydrogen phosphates are employed as catalysts for acid catalyzed organic condensation reactions. High conversion and exceptionally high selectivity are obtained by use of such catalysts in cyclization reactions such as in the conversion of hydroxyethylpiperazine to triethylenediamine.Type: GrantFiled: April 22, 1983Date of Patent: April 30, 1985Assignee: Air Products and Chemicals, Inc.Inventor: James E. Wells
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Patent number: 4501889Abstract: Certain hydrogen phosphate and pyrophosphate compositions are employed as catalysts for organic condensation reactions. Specifically, a diethylene glycolamine compound is converted to a morpholine compound in the presence of such a catalyst.Type: GrantFiled: May 24, 1982Date of Patent: February 26, 1985Assignee: Air Products and Chemicals, Inc.Inventors: James E. Wells, Victoria Eskinazi
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Patent number: 4483488Abstract: The invention relates to cryogenically cooling and impacting thermoplastic coated fabric to liberate the thermoplastic from the fabric and screening the resulting thermoplastic fabric mixture in a multi-deck vibratory screener into a coarse fabric segment, a thermoplastic fines segment and a third segment. The third segment is separated into a fabric fines segment and a coarse thermoplastic segment in, for example, an air classifier. The recovered thermoplastic coarse and fines segments can be reused in all applications for regrind thermoplastic material.Type: GrantFiled: April 21, 1983Date of Patent: November 20, 1984Assignee: Air Products and Chemicals, Inc.Inventors: Bruce A. Luff, Michael C. Kazarnowicz
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Patent number: 4481018Abstract: The invention relates to faujasite-containing compositions in which the original hydrogen or monovalent forms are ion exchanged to their polyvalent form and then thermally activated to promote dehydration and dehydroxylation of the faujasite while maintaining substantially the same zeolite content. The resulting compositions containing faujasites substantially in their dehydrated/dehydroxylated state have been found to have surprisingly high selectivities and capacities for the separation of air into nitrogen and oxygen.Type: GrantFiled: November 15, 1982Date of Patent: November 6, 1984Assignee: Air Products and Chemicals, Inc.Inventors: Charles G. Coe, Steven M. Kuznicki
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Patent number: 4451002Abstract: The temperature actuated valve comprises a thermally more sensitive valve stem than the valve housing. The stem expands at a faster rate and causes vapor entering the valve to be gradually vented through an orifice of gradually increasing area as the temperature of the gas increases. It has application as a cryogenic phase separator valve which allows any cryogen vaporized in a cryogen delivery system to be automatically vented from the valve and to allow for an even flow of liquid to the spray nozzles and onto products of cryogenic freezing tunnels.Type: GrantFiled: July 19, 1983Date of Patent: May 29, 1984Assignee: Air Products and Chemicals, Inc.Inventors: David J. Klee, Peter C. Nelson
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Patent number: 4441327Abstract: The temperature actuated valve comprises a thermally more sensitive valve stem than the valve housing. The stem expands at a faster rate and causes vapor entering the valve to be gradually vented through an orifice of gradually increasing area as the temperature of the gas increases. It has application as a cryogenic phase separator valve which allows any cryogen vaporized in a cryogen delivery system to be automatically vented from the valve and to allow for an even flow of liquid to the spray nozzles and onto products of cryogenic freezing tunnels.Type: GrantFiled: December 7, 1981Date of Patent: April 10, 1984Assignee: Air Products and Chemicals, Inc.Inventors: David J. Klee, Peter C. Nelson
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Patent number: 4439126Abstract: In a blow molding process in which a parison is blown with a blowing gas containing a reactive gas component capable of reacting with the inner walls of the parison, the blowing gas is removed from the resulting blown article with a purging gas and stored for reuse. The mixture of blowing and purging gases in a reserve tank or other suitable means is adjusted to a certain level of pressure and reactive gas concentration and then recycled as the blowing gas in a subsequent blow molding step. The resulting blown articles from this process have improved properties, e.g. improved impermeability against non-polar solvents when fluorine is the reactive gas.Type: GrantFiled: February 7, 1983Date of Patent: March 27, 1984Assignees: Air Products and Chemicals, Inc., Daido Oxygen Company Ltd.Inventors: Hatahiko Fukushima, Tadahiko Handa, Kenji Kodama
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Patent number: 4414823Abstract: This invention is directed to an apparatus for freezing an article under cryogenic conditions which comprises a housing encompassing an entry port, a freezing station, an exit station and an exit port being at a greater vertical elevation than the entry port and freezing station. In connection with the housing, there are means provided for transporting the article to be frozen sequentially from the entry port, entry station, through the freezing station, and then to the exit station, preferably at a rate of travel which increases as the article is being transported through the exit station. A connection is made to the housing permitting the introduction of a cryogen into the freezing station thereby maintaining such station at a cryogenic temperature.Type: GrantFiled: January 21, 1982Date of Patent: November 15, 1983Assignee: Air Products and Chemicals, Inc.Inventor: Thomas E. McWhorter
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Patent number: 4407738Abstract: The process for preparing a regionalized platinum/rhodium catalyst using a single impregnating step. The process is particularly effective in preparing such a catalyst for use as an automotive emissions control catalyst. A substantially alumina support is impregnated in a platinum/rhodium controlled acidic solution of a strong acid and an ammonium salt or equivalent thereof.Type: GrantFiled: December 21, 1981Date of Patent: October 4, 1983Assignee: Air Products and Chemicals, Inc.Inventors: Victoria Eskinazi, John F. Kirner, Charles R. Wilson
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Patent number: 4405784Abstract: Strontium diorthophosphate is employed as catalyst for acid catalyzed organic condensation reactions. High conversion and exceptionally high selectivity are obtained by use of strontium diorthophosphate in cyclization reactions such as in the conversion of hydroxyethylpiperazine to triethylenediamine.Type: GrantFiled: June 29, 1981Date of Patent: September 20, 1983Assignee: Air Products and Chemicals, Inc.Inventor: James E. Wells
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Patent number: 4404397Abstract: A stabilized heteropoly molybdate catalyst precursor in calcined form and containing anionic molybdenum in defect state is surface impregnated with certain metal cations. The stabilized precursor is one obtained by incorporating into the reaction product of a molybdate and a soluble phosphate, silicate or arsenate, an aqueous chloride ion and a compound of phosphotungstate, silicotungstate, vanadium arsenate, silico-arsenate, phosphovanadate, or silicovanadate, followed by drying and calcining. During the chloride ion stabilization step other metals may be optionally incorporated in forming the stabilized precursor.The obtained precursor is catalytically active in the conversion of the unsaturated aldehydes to the corresponding unsaturated carboxylic acids with or without incorporation of the metal cation during the chloride ion stabilization step.Type: GrantFiled: December 29, 1980Date of Patent: September 13, 1983Assignee: Air Products and Chemicals, Inc.Inventor: Chelliah Daniel
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Patent number: 4372447Abstract: Nonwoven fibrous sheets bonded with polyvinyl alcohol, intended for use in pre-moistened condition as skin cleansing tissues, are folded and packaged in closed containers or in individual sealed water impervious envelopes; said packaged sheets being maintained in contact with a dilute aqueous solution of boric acid. The boric acid imparts improved wet tensile strength to the sheet during storage and use by the consumer but may be safely disposed of, after use, by flushing in plain water without danger of clogging the plumbing system. Instead of boric acid solution, one may employ for the indicated purpose a non-alkaline aqueous solution of a salt which acts as a precipitating or gelling agent for polyvinyl alcohol, said salt being one having an acid to neutral pH on hydrolysis.Type: GrantFiled: May 12, 1980Date of Patent: February 8, 1983Assignee: Air Products and Chemicals, Inc.Inventor: Gerald D. Miller