Patents by Inventor Alan B. Gancy

Alan B. Gancy 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).

  • Patent number: 5608931
    Abstract: Apparatus and method for controlling outward movement of flexible walls defining an enclosed chamber of a device inflatable by air or other compressible fluid, the outward movement occurring in response to application of an external force over portions of a flexible wall to decrease the volume and increase the internal pressure of the chamber. Spring-like couplings, preferably in the form of elastic members such as "rubber bands," are attached at spaced points to portions of the flexible, relatively moveable walls inside and/or outside the chamber. The couplings are so attached as to be expanded or stretched by relative movement of the flexible wall portions as the external force is applied, whereby the members exert a force resiliently opposing movement of the flexible walls in response to the increase in internal pressure caused by application of the external force.
    Type: Grant
    Filed: November 23, 1994
    Date of Patent: March 11, 1997
    Inventor: Alan B. Gancy
  • Patent number: 5162580
    Abstract: Superior quality magnesium calcium acetate (hydrate) granules of industrial grade are produced from a concentrated aqueous solution of magnesium acetate containing limited amounts of calcium acetate. The hot solution, or process liquor, is carefully pH-adjusted prior to further processing, and may be slightly acidified with excess acetic acid to offset downstream hydrolysis during the granulation/drying stage.Process liquor hydrolysis is avoided by maintaining liquor temperature and residence time within prescribed limits.Process liquor may be optionally clarified of mineral insolubles deriving from raw material, and of excess, unwanted calcium acetate solids prior to further processing. From such clarified liquor a purer, technical grade magnesium acetate (hydrate) granular product is derived.Hot process liquor may be passed through a short residence time heating zone prior to granulation/drying in order to provide additional sensible heat going to the granulation/drying operation.
    Type: Grant
    Filed: July 12, 1988
    Date of Patent: November 10, 1992
    Inventor: Alan B. Gancy
  • Patent number: 4699725
    Abstract: Finely divided ore blends containing chemically active magnesium oxide and calcium oxide are physically combined with a critical amount of water prior to reaction with acetic acid. Intermediate products range in physical consistency from putty-like masses to viscous liquors, depending upon the relative fraction of magnesium oxide in the ore feed. Intermediate products freeze to form hydrates of magnesium calcium acetate, the freeze times being dependent upon a number of chemical and physical parameters. Product drying requirements range from minimal drying to none at all, depending upon the magnesium fraction in the products. Products are non-friable and have excellent crush strength, and are suitable for storage, shipping and application in chemical deicing as well as other end use applications where crude low-cost materials are called for.A unique situation centers around the composition corresponding to the magnesium mol fraction of 0.8.
    Type: Grant
    Filed: December 12, 1986
    Date of Patent: October 13, 1987
    Inventor: Alan B. Gancy
  • Patent number: 4673519
    Abstract: Several novel means are presented of chemically combining calcium/magnesium acetate with calcium chloride to form a series of calcium magnesium acetate-chloride triple-salts. The low-cost processes are carried out using minimal proportions of water, and no co-products or by-products are formed. Products are optionally pelletized for use as roadway deicing agents. By adjusting the relative amount of chloride input, products can be tailored to adequately perform a given deicing or freezing-point depression task with a minimum of environmental pollution by chloride.All product variations are non-deliquescent.In the preferred embodiment, lime is reacted with concentrated acetic acid to form calcium/magnesium acetate. To the acetate is added an aqueous calcium chloride solution. The concentration of water in the reaction batch is critical to the attainment of complete chemical combination to form a flowable solid product.
    Type: Grant
    Filed: June 24, 1985
    Date of Patent: June 16, 1987
    Inventor: Alan B. Gancy
  • Patent number: 4606836
    Abstract: Finely divided lime, at any degree of slaking, is introduced in a steady stream into an agitated reactor designed to produce pellets or aggregates. Concentrated acetic acid is simultaneously introduced in a steady stream at a rate equal to the chemical combining rate required to produce calcium magnesium acetate. Water content of the reaction stream is critical; the mol ratio of water, including water of neutralization, to the calcium magnesium acetate product must fall in the range 3.3-7.0 in order to form the desired pellets and to avoid sticking, caking, and dust emanation from the reactor. Product pellets are drawn off in a stream from the reactor and dried for use as a non-polluting roadway and walkway deicer. Traction agent is optionally incorporated into the deicer pellets by introducing a steady stream of traction agent to the reactor simultaneous with raw materials introduction. Magnesium-to-calcium ratios greater than one are achieved by blending dolime with magnesium-rich ore.
    Type: Grant
    Filed: January 22, 1985
    Date of Patent: August 19, 1986
    Inventor: Alan B. Gancy
  • Patent number: 4511485
    Abstract: A reduced pollutant-containing salt mixture and method of making same is provided wherein a salt mixture partially comprised of calcium acetate and partially comprised of at least one other pollutant salt is produced by mixing a pollutant salt-containing solution and a calcium acetate-containing solution and converting said mixture into a solid salt containing both the pollutant salt and the nonpollutant calcium acetate. A process option involves chemically reacting calcium chloride and calcium acetate in a calcium chloride-to-calcium acetate mole ratio in the range from 0 to 1 to produce a non-deliquescent salt. A further process option includes mixing either dry calcium chloride or dry sodium chloride with dry calcium acetate to obtain a reduced pollutant-containing salt mixture.
    Type: Grant
    Filed: April 20, 1983
    Date of Patent: April 16, 1985
    Inventor: Alan B. Gancy
  • Patent number: 4488978
    Abstract: A process for the manufacture of calcium acetate pellets suitable for surface deicing, which comprises slow addition of water to dried calcium acetate or to calcium acetate freshly prepared from reaction of hydrated or unslaked lime with concentrated acetic acid, in an agitated vessel designed to produce pellets. Pellets are dried to a critical residual water level to avoid their embrittlement. The relative amount of water used in the pelletizing process is highly critical, and depends upon the source of calcium acetate as well as the amount of magnesium ion in the pellet formulation.
    Type: Grant
    Filed: February 10, 1983
    Date of Patent: December 18, 1984
    Inventor: Alan B. Gancy
  • Patent number: 4444672
    Abstract: A process of making a calcium acetate-containing solution having a pH value at room temperature between about 7 and about 8 is provided comprising reacting acetic acid with a carbonate compound, adding calcined limestone, and optionally finishing off the acid-base reaction with an amount of an alkali metal hydroxide comprising from about 2% to about 5% of the total stoichiometric complement to the amount of acetic acid. Further process options which may be used in the preparation of deicing agents include adding coarse limestone to the above-prepared calcium acetate-containing solution in amounts up to 10% by weight and converting the solution into solid flakes. The calcium acetate salt product can be mixed with an inert solid material having good anti-slip properties.
    Type: Grant
    Filed: April 20, 1983
    Date of Patent: April 24, 1984
    Inventor: Alan B. Gancy
  • Patent number: 4430242
    Abstract: A process of reacting aqueous acetic acid and crushed raw limestone in such a way as to produce a mixture of calcium acetate, calcium acid-acetate, and unreacted raw limestone devoid of undesirable fine limestone. Such a product is useful in winter highway treatment, where the environmentally safe soluble acetates function to depress the freezing point of water, and the limestone acts as a roadway traction agent. When as much as 3 mols of acetic acid per mol of active calcium carbonate in limestone are used, all the limestone is consumed, with virtually 100% yield of calcium acid-acetate.
    Type: Grant
    Filed: August 2, 1982
    Date of Patent: February 7, 1984
    Inventor: Alan B. Gancy
  • Patent number: 4429065
    Abstract: A variable density fluid is provided comprising a multiplicity of polymer micro-particles or polymer microfilaments added to a suspending liquid. By varying the density, shape, size, and material of construction of the added micro-particles or microfilaments, the physical properties of the composite liquid suspension, such as density, viscosity and compressibility, are controllable. In one specific embodiment, the polymer micro-particles can be used to selectively remove a liquid from a mixture of liquids, such as oil from sea water for example.
    Type: Grant
    Filed: August 10, 1981
    Date of Patent: January 31, 1984
    Inventor: Alan B. Gancy
  • Patent number: 4426308
    Abstract: A process of making a calcium acetate-containing solution having a pH value at room temperature between about 7 and about 8 is provided comprising reacting acetic acid with a carbonate compound, adding calcined limestone, and optionally finishing off the acid-base reaction with an amount of an alkali metal hydroxide comprising from about 2% to about 5% of the total stoichiometric complement to the amount of acetic acid. Further process options which may be used in the preparation of deicing agents include adding coarse limestone to the above-prepared calcium acetate-containing solution in amounts up to 10% by weight and converting the solution into solid flakes.
    Type: Grant
    Filed: March 18, 1983
    Date of Patent: January 17, 1984
    Inventor: Alan B. Gancy
  • Patent number: 4400285
    Abstract: Chemical formulations containing calcium oxide, or unslaked calcined limestone, and a chemical deicing agent. The formulations liberate heat upon contacting ice or snow and materially assist the normal deicing function. Deicer options include calcium acetate, sodium acetate, magnesium acetate, and potassium acetate and sodium chloride (salt). The magnesium acetate containing formulation represents a special case in which the ultimate products formed are magnesium hydroxide and calcium acetate, both relatively harmless to the environment.
    Type: Grant
    Filed: April 12, 1982
    Date of Patent: August 23, 1983
    Inventor: Alan B. Gancy
  • Patent number: 4389323
    Abstract: A process of making different grades of calcium magnesium acetate deicing agents, having substantially uniform but different calcium-to-magnesium mole ratios, from limestone having varying proportions of calcium carbonate and magnesium carbonate, is provided wherein limestone containing calcium and magnesium carbonates is finely divided, mixed with water to form an aqueous suspension of limestone, vigorously agitated and reacted with excess acetic acid. The reaction is completed by adding to the reaction batch about 30% of the molar equivalent of calcined finely divided limestone base to produce a calcium magnesium acetate salt solution having a calcium-to-magnesium mole ratio much greater than one. The insolubles from this first reaction are removed, calcined and reacted with acetic acid in a second reaction to produce a calcium magnesium acetate salt solution having a calcium-to-magnesium mole ratio substantially equal to one.
    Type: Grant
    Filed: November 2, 1981
    Date of Patent: June 21, 1983
    Inventor: Alan B. Gancy
  • Patent number: 4377488
    Abstract: A process of making a calcium acetate-containing solution having a pH value at room temperature between about 7 and about 8 is provided comprising reacting acetic acid with a carbonate compound, adding calcined limestone, and optionally finishing off the acid-base reaction with an amount of an alkali metal hydroxide comprising from about 2% to about 5% of the total stoichiometric complement to the amount of acetic acid. Further process options which may be used in the preparation of deicing agents include adding coarse limestone to the above-prepared calcium acetate-containing solution in amounts up to 10% by weight and converting the solution into solid flakes.
    Type: Grant
    Filed: December 21, 1981
    Date of Patent: March 22, 1983
    Inventor: Alan B. Gancy
  • Patent number: 4284611
    Abstract: A physically and functionally stable solution for water treatment comprises an about 1.2-2.7 molar aqueous phosphate-stabilized polyaluminum sulfate solution of a composition having the formulaAl(OH).sub.x (SO.sub.4).sub.y (H.sub.2 PO.sub.4).sub.zwhereinx is about 1.2 to 1.62;y is about 0.595 to 0.87; andz is about 0.06 to 0.19with the proviso that the sum of x+2y+z is 3. The aqueous phosphate-stabilized polyaluminum sulfate solution can be prepared by reacting alumina hydrate with phosphoric acid and contacting the reacted alumina hydrate with an aqueous polyaluminum sulfate solution. Alternatively, the aqueous phosphate-stabilized polyaluminum sulfate solution can be prepared by reacting an aqueous overbasified polyaluminum sulfate phosphate solution with an aqueous aluminum sulfate solution.
    Type: Grant
    Filed: July 25, 1979
    Date of Patent: August 18, 1981
    Assignee: Allied Chemical Corporation
    Inventors: Alan B. Gancy, Christian A. Wamser
  • Patent number: 4260846
    Abstract: An improved cyclic process for the alkylation of isoparaffins with olefins in the presence of a circulating concentrated sulfuric acid catalyst is disclosed. Improvement in the octane rating of the product alkylate is achieved by periodic fortification of the sulfuric acid catalyst with a sulfur trioxide-bearing fortifying agent under conditions wherein the harmful effects caused by contact of the sulfur trioxide with the hydrocarbons in the alkylation zone are minimized. The acid catalyst is fortified during less than about 15% of the cycles of the circulating acid catalyst through the alkylation system to maintain the water content of the acid catalyst in the range of above about 1% and below about 4% by weight. The process effects not only essentially 100% utilization of the fortifying agent for water removal but also improves the octane rating of the product alkylate while simultaneously extending the service life of the acid catalyst by allowing use of the catalyst having higher organic content.
    Type: Grant
    Filed: June 11, 1979
    Date of Patent: April 7, 1981
    Assignee: Allied Chemical Corporation
    Inventors: Bela I. Karsay, Robert L. Sturtevant, Alan B. Gancy
  • Patent number: 4238347
    Abstract: A process is disclosed for preparation of an amorphous polyaluminum sulfate composition of the formulaAl(OH).sub.x (SO.sub.4).sub.y (H.sub.2 PO.sub.4).sub.z (H.sub.2 O).sub.wwhereinx is about 0.75 to 1.5y is about 0.7 to 1.07z is about 0 to 0.2w is about 2.0 to 4.2with the proviso that the sum x+2y+z is 3. Water is withdrawn from a fairly fresh polyaluminum sulfate solution having the formulaAl(OH).sub.x' (SO.sub.4).sub.y' (H.sub.2 PO.sub.4).sub.z' (H.sub.2 O).sub.w'whereinx' is about 0.75 to 1.5y' is about 0.7 to 1.07z' is about 0 to 0.2w' is about 18 to 65with the proviso that the sum x'+2y'+z' is 3. The amorphous composition is useful for reconstitution with water to prepare a coagulant solution.
    Type: Grant
    Filed: August 9, 1979
    Date of Patent: December 9, 1980
    Assignee: Allied Chemical Corporation
    Inventors: Alan B. Gancy, Christian A. Wamser
  • Patent number: 4238305
    Abstract: An electrodialytic process for the conversion of soda sources containing anionic and optionally nonionic impurities to high purity, high strength sodium hydroxide and carbon dioxide gas is disclosed.
    Type: Grant
    Filed: October 29, 1979
    Date of Patent: December 9, 1980
    Assignee: Allied Chemical Corporation
    Inventors: Alan B. Gancy, Theodore J. Jenczewski
  • Patent number: RE32609
    Abstract: Finely divided lime, at any degree of slaking, is introduced in a steady stream into an agitated reactor designed to produce pellets or aggregates. Concentrated acetic acid is simultaneously introduced in a steady stream at a rate equal to the chemical combining rate required to produce calcium magesium acetate. Water content of the reaction stream is critical; the mol ratio of water, including water of neutralization, to the calcium magnesium acetate product must fall in the range 3.3-7.0 in order to form the desired pellets and to avoid sticking, caking, and dust emanation from the reactor. Product pellets are drawn off in a stream from the reactor and dried for use as a non-polluting roadway and walkway deicer. Traction agent is optionally incorporated into the deicer pellets by introducing a steady stream of traction agent to the reactor simultaneous with raw materials introduction. Magnesium-to-calcium ratios greater than one are achieved by blending dolime with magnesium-rich ore.
    Type: Grant
    Filed: November 6, 1986
    Date of Patent: February 23, 1988
    Inventor: Alan B. Gancy
  • Patent number: RE33095
    Abstract: Finely divided ore blends containing chemically active magnesium oxide and calcium oxide are physically combined with a critical amount of water prior to reaction with acetic acid. Intermediate products range in physical consistency from putty-like masses to viscous liquors, depending upon the relative fraction of magnesium oxide in the ore feed. Intermediate products freeze to form hydrates of magnesium calcium acetate, the freeze times being dependent upon a number of chemical and physical parameters. Product drying requirements range from minimal drying to none at all, depending upon the magnesium fraction in the products. Products are non-friable and have excellent crush strength, and are suitable for storage, shipping and application in chemical deicing as well as other end use applications where crude low-cost materials are called for.A unique situation centers around the composition corresponding to the magnesium mol fraction of 0.8.
    Type: Grant
    Filed: March 15, 1988
    Date of Patent: October 17, 1989
    Inventor: Alan B. Gancy