Patents by Inventor William V. Hayes
William V. Hayes has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 5003813Abstract: The present disclosure is directed to a method and apparatus for monitoring leaks from underground storage tanks and the like. One or more wells of specified depth are formed and each well is lined with plastic pipe which is perforated to admit migratory diffused hydrocarbon molecules from the soil into the pipe. A cap closes the upper end of the pipe and supports a cable which holds an absorbent cartridge. The cartridge has a perforate housing and the housing filled with beads of divinylbenzene which serve as a hydrocarbon, hydrophobic absorbent material. A test procedure is also set forth wherein absorbed hydrocarbons from test cartridges are correlated to background levels and the signature of a stored hydrocarbon product.Type: GrantFiled: February 20, 1990Date of Patent: April 2, 1991Assignee: Hayes Separations, Inc.Inventor: William V. Hayes
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Patent number: 4863494Abstract: This disclosure is directed to an air purification bead for removing volatile organic compounds. The preferred form is a divinylbenzene spherical bead sized to pass a 20 mesh to 50 mesh screen. It is formed of not more than 30% and preferable less of divinylbenzene polymer, the median pore diameter being typically in the range of about 40 to 55 angstroms, and the pore volume ranging from about 1.8 to about 2.24 cc/g. The spheres can be treated with a heated purge medium with temperatures up to about 290.degree. C.Type: GrantFiled: October 31, 1988Date of Patent: September 5, 1989Inventor: William V. Hayes
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Patent number: 4705519Abstract: A repair material enabling regrowth of damaged bones is set forth. In the preferred and illustrated embodiment, the repair material is polydivinylbenzene in particulate form. The particles are typically random sizes in a specified range, relatively porous, having a relatively high surface area per unit weight, thereby enabling bone growth supported by such particles.Type: GrantFiled: August 15, 1986Date of Patent: November 10, 1987Assignee: Hayes Separation, Inc.Inventors: William V. Hayes, Turner, Albert H.
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Patent number: 4643735Abstract: A repair material enabling regrowth of damaged bones is set forth. In the preferred and illustrated embodiment, the repair material is polydivinyl benzene in particulate form. The particles are typically random sizes in a specified range, relatively porous, having a relatively high surface area per unit weight, thereby enabling bone growth supported by such particles.Type: GrantFiled: February 27, 1985Date of Patent: February 17, 1987Assignee: Hayes Separation, Inc.Inventors: William V. Hayes, Albert H. Turner
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Patent number: 4431842Abstract: A process of making nitroalkanes which comprises reacting a lower alkanol, e.g. methanol, and nitric acid (HNO.sub.3) in the vapor phase in the presence of a catalyst which is an oxide or a salt of a metal of Group II of the periodic table, e.g. calcium chloride.Type: GrantFiled: December 1, 1982Date of Patent: February 14, 1984Assignee: The Dow Chemical CompanyInventor: William V. Hayes
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Patent number: 4421940Abstract: An improved process for the vapor phase nitration of alkanes comprising feeding the alkane with an inert diluent gas and vaporizing the nitric acid on the surface of a catalyst bed which is the salt or oxide of a group II metal of the periodic chart.Type: GrantFiled: February 25, 1982Date of Patent: December 20, 1983Assignee: The Dow Chemical CompanyInventor: William V. Hayes
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Patent number: 4358405Abstract: A dehydration catalyst and process for making an alkylenimine from an alkanolamine wherein the catalyst contains oxides of either tantalum or niobium together with the oxides of iron and chromium and in which the ratios of the metals are:M.sub.10 Fe.sub.0.5-2.9 Cr.sub.0.3-1.7wherein M is tantalum or niobium.Type: GrantFiled: March 25, 1981Date of Patent: November 9, 1982Assignee: The Dow Chemical Co.Inventors: William V. Hayes, David L. Childress
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Patent number: 4350830Abstract: A method for preparing acrylic acid by oxidation of acrolein over a new and improved catalyst providing conversions of acrolein of greater than 99% with yields of acrylic acid in excess of 95%. The catalyst consists essentially of the oxides of molybdenum, vanadium, chromium, copper and titanium and optionally silicon on an inert carrier. Catalysts useful in the process contain the elements previously mentioned in the atomic ratios ofMo.sub.15 V.sub.5-10 Cu.sub.2-5 Cr.sub.0.2-2 Ti.sub.Type: GrantFiled: October 17, 1979Date of Patent: September 21, 1982Assignee: The Dow Chemical Co.Inventors: David L. Childress, William V. Hayes, Richard L. Poppe
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Patent number: 4316708Abstract: A machine and method of operation are disclosed for continuously molding solid pellets from a mud composition. In a specific application, the machine is useful for producing an oxidation catalyst in pellet form. The machine includes a rotatable disk having small openings therein, which provide mold cavities. As the disk is rotated, the mud composition is injected into the mold openings through an injection head, which rides against the front face of the disk. The mud is retained in each mold opening by a backing plate, which rides against the back face of the disk. Ambient air is passed through a heater located at the top of a housing which partially encloses the disk. The heated air is circulated downwardly on both sides of the disk to dry the mud in the mold openings. An ejection head is positioned such that it rides against the front face of the rotating disk at a point behind the injection head. Pressurized air is forced through air passages in the ejection head, which register with the mold openings.Type: GrantFiled: June 30, 1977Date of Patent: February 23, 1982Assignee: The Dow Chemical CompanyInventors: Allen G. Skach, David L. Childress, William V. Hayes
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Patent number: 4301036Abstract: A dehydration catalyst containing tungsten oxide on a low surface area support and having a silica coating thereon. The catalyst has increased life and is useful for the dehydration of alkanolamines in making alkylenimines, e.g. ethanolamine is dehydrated to ethylenimine.Type: GrantFiled: July 18, 1980Date of Patent: November 17, 1981Assignee: The Dow Chemical CompanyInventors: David L. Childress, William V. Hayes
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Patent number: 4289656Abstract: A dehydration catalyst and process for making an alkylenimine from an alkanolamine wherein the catalyst contains oxides of either tantalum or niobium together with the oxides of iron and chromium and in which the ratios of the metals areM.sub.10 Fe.sub.0.5-2.9 Cr.sub.0.3-1.7wherein M is tantalum or niobium.Type: GrantFiled: July 17, 1980Date of Patent: September 15, 1981Assignee: The Dow Chemical CompanyInventors: William V. Hayes, David L. Childress
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Patent number: 4208306Abstract: A method for preparing acrylic acid by oxidation of acrolein over a new and improved catalyst providing conversions of acrolein of greater than 99% with yields of acrylic acid in excess of 95%. The catalyst consists essentially of the oxides of molybdenum, vanadium, chromium, copper and titanium and optionally silicon on an inert carrier. Catalysts useful in the process contain the elements previously mentioned in the atomic ratios ofMo.sub.15 V.sub.5-10 Cu.sub.2-5 Cr.sub.0.2-2 Ti.sub.1-3.Type: GrantFiled: October 26, 1978Date of Patent: June 17, 1980Assignee: The Dow Chemical CompanyInventors: David L. Childress, William V. Hayes, Richard L. Poppe
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Patent number: 4129600Abstract: A method of preparing acrolein and methacrolein by oxidation of propylene and isobutylene over a new improved catalyst providing conversions and yields, each greater than 90% in a single-pass reactor. The improved catalyst contains within certain prescribed proportions the oxides of cobalt, iron, bismuth, molybdenum, potassium, and optionally silicon. The metals have atomic ratios ofCo.sub.3-10 Fe.sub.0.5-3.0 Bi.sub.0.5-3.0 Mo.sub.15 K.sub.0.01-0.5 Si.sub.0.5-3.0and are present in the form of oxides as pellets, spheres, or on a support. With a recycle system, a conversion of the olefin greater than 99% and yield to the aldehyde of greater than 95% are possible.Type: GrantFiled: March 18, 1977Date of Patent: December 12, 1978Assignee: The Dow Chemical CompanyInventors: David L. Childress, William V. Hayes, Richard L. Poppe
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Patent number: 4049577Abstract: A method of preparing acrolein and methacrolein by oxidation of propylene and isobutylene over a new improved catalyst providing conversions and yields, each greater than 90% in a single-pass reactor. The improved catalyst contains within certain prescribed proportions the oxides of cobalt, iron, bismuth, molybdenum, potassium, and optionally silicon. The metals have atomic ratios ofCo.sub.3-10 Fe.sub.0.5-3.0 Bi.sub.0.5-3.0 Mo.sub.15 K.sub.0.01-0.5 Si.sub.0.5-3.0and are present in the form of oxides as pellets, spheres, or on a support. With a recycle system, a conversion of the olefin greater than 99% and yield to the aldehyde of greater than 95% are possible.Type: GrantFiled: December 15, 1975Date of Patent: September 20, 1977Assignee: The Dow Chemical CompanyInventors: David L. Childress, William V. Hayes, Richard L. Poppe
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Patent number: 4035262Abstract: A method of preparing acrylic acid by oxidation of acrolein over a new and improved catalyst providing conversions of acrolein of greater than 99% with yields of acrylic acid in excess of 95%. The catalyst consists essentially of the oxides of molybdenum, vanadium, chromium and copper and at least one of tantalum and niobium and optionally silicon on an inert carrier. Catalysts useful in the process contain the elements previously mentioned in the atomic ratios ofMo.sub.15 V.sub.5-10 Cu.sub.2-5 Cr.sub.0.2-2 M.sub.0.1-3where M is tantalum, niobium or mixtures thereof.Type: GrantFiled: April 19, 1976Date of Patent: July 12, 1977Assignee: The Dow Chemical CompanyInventors: David L. Childress, William V. Hayes, Richard L. Poppe