Patents Examined by V. Manoharan
  • Patent number: 4869872
    Abstract: A process for drying and sterilizing items, such as laundry articles, bed clothing, leather goods, hair care instruments, medical instruments, etc., in a cabinet having an internal air circuit and an external air circuit which are in contact with one another through a condensation and refrigeration unit thereby permitting drying of an article at a warm air temperature not exceeding 100.degree. C. followed immediately by sterilization of the article in a temperature range of 121.degree. C. to 135.degree. C.
    Type: Grant
    Filed: September 25, 1987
    Date of Patent: September 26, 1989
    Inventor: Hans Baltes
  • Patent number: 4867997
    Abstract: A process is described for preparing in particular alcohol-free wine in which by extraction with supercritical CO.sub.2 firstly a specific aroma fraction with limited ethanol content is separated from the starting wine. The residual wine is then subjected to a vacuum distillation in which apart from the complete separation of the ethanol from the residual wine a fraction of more difficulty extractable aromatic substances not affected by the extraction is recovered which in the end together with the extract is added to the dealcoholized residual wine again to obtain an alcohol-free wine. The method permits an almost complete removal of the alcohol content without detrimentally affecting the basic wine and with retention of all the aromatic and flavoring substances characteristic of the wine.
    Type: Grant
    Filed: December 10, 1986
    Date of Patent: September 19, 1989
    Assignee: Peter Eckes KG MBH
    Inventors: Alfred Wiesenberger, Rolf Marr, Erich Kolb, Jens A. Schildmann, Reinhard Weisrock
  • Patent number: 4857150
    Abstract: A process for the recovery of silicone oil and chlorobenzenes from a mixture containing silicone oil, chlorobenzenes, and polychlorinated biphenyls comprising:(a) introducing the mixture into a distillation zone at a temperature and a pressure which will cause the chlorobenzenes to flash overhead and the mixture of silicone oil and polychlorinated biphenyls to pass to the bottom of the zone; and(b) removing the bottoms from step (a), cooling same, and passing the bottoms through at least one bed of activated carbon, which is an adsorbent for polychlorinated biphenyls.
    Type: Grant
    Filed: June 22, 1988
    Date of Patent: August 15, 1989
    Assignee: Union Carbide Corporation
    Inventors: Steven E. Rival, William D. Prince
  • Patent number: 4857355
    Abstract: A batch mixing process for the preparation of a beverage syrup which results in a requirement for significantly lesser quantities of water in the syrup mixing process, primarily by reducing the amount of rinse water required to rinse between the mixing of the separate components of the beverage syrup. The syrup batching loop employs a main syrup tank and a subsidiary premixing tank for premixing selected components of the beverage syrup with a quantity of water to dilute each premixed component. A feed line extends from the premixing tank to the syrup tank, such that after dilution, each diluted premixed component can be pumped therethrough from the premixing tank to the main syrup tank.
    Type: Grant
    Filed: February 10, 1987
    Date of Patent: August 15, 1989
    Assignee: PepsiCo Inc.
    Inventor: John A. Gregg
  • Patent number: 4853089
    Abstract: A process for purifying exo-2-hydroxy-1,4-cineole contaminated with ketones is carried out by derivatizing the ketone to form a compound readily separable from the desired cineole, either by distillation, solvent extraction or like separation process. In one embodiment method of the invention, derivatization is carried out by reaction of the ketone with an amine. The amine reacts with the ketone impurities to form water and relatively stable enamine derivatives that have a much lower vapor pressure than the exo-2-hydroxy-1,4-cineole. The desired product may then be separated by distillation.
    Type: Grant
    Filed: October 29, 1987
    Date of Patent: August 1, 1989
    Assignee: Union Camp Corporation
    Inventors: James O. Bledsoe, Jr., Bernard Brust
  • Patent number: 4853088
    Abstract: A process and apparatus for separating volatile components from a volatile-containing liquid by a stripping gas flowing countercurrent to the liquid. Separation of the volatile components is enhanced by heating the liquid with radiant solar energy and agitating the liquid as it flows.
    Type: Grant
    Filed: April 12, 1988
    Date of Patent: August 1, 1989
    Assignee: Marathon Oil Company
    Inventor: David D. Conway
  • Patent number: 4850480
    Abstract: A bottle of wine is received in a container with a cover, both being made of foamed polystyrene. Polyacrylate, as a water-absorbing material moist with water, is put in the inner space defined by the container and the cover to impart a nearly constant humid condition in the inner space.
    Type: Grant
    Filed: October 23, 1987
    Date of Patent: July 25, 1989
    Inventors: Tomihisa Kawaguchi, Akira Ota, Akira Kawasaki
  • Patent number: 4838997
    Abstract: Process for deodorizing triglyceride oil comprises passing dry steam through the oil, the oil being at a temperature between 160.degree. and 280.degree. C. and under a pressure of between 0.1 to 8.0 mbar and condensing by indirect condenser means a vapor phase having a Reynolds number less than 2300 and comprising steam, volatile materials from the oil and less than 100 mg neutral oil per m.sup.3 of steam when measured under the conditions prevailing in the headspace above the oil. The condensate can be solid or liquid form. In either case the condensate can be readily removed from the condenser.
    Type: Grant
    Filed: November 13, 1987
    Date of Patent: June 13, 1989
    Assignee: Atlas-Danmark A/S
    Inventor: Werner Merk
  • Patent number: 4838998
    Abstract: The amount of water required to effect efficient separation of a mixture of sulfuric acid and carboxylic acids by distillation, is reduced, by diluting the mixture while in the distillation column in a prescribed manner with sufficient water to provide a water:sulfuric acid mole ratio of about 1:1. The heat generated by the internal dilution reduces the energy requirement of the column. Feeding the dilution water to the column below the feed mixture is a key element of the process.
    Type: Grant
    Filed: December 4, 1987
    Date of Patent: June 13, 1989
    Assignee: Rohm and Haas Company
    Inventors: Philip D. T. Davies, Lawrence S. Kirch
  • Patent number: 4832796
    Abstract: A process for improving the quality of phenol which comprises(a) introducing a liquid phenol composition comprising above about 95 weight percent phenol on a dry basis, organic acid contaminants, and organic ketone contaminants;(b) introducing water into the distillation tower, together with the phenol stream or in a separate stream;(c) heating the phenol composition and water to a temperature sufficiently high to vaporize the water;(d) allowing the organic acid contaminant to build to a concentration whereby sufficient acid is present to catalyze a reaction between an organic ketone contaminant and phenol, thereby forming a new compound(s) and;(e) removing the said formed compound(s) from the distillation tower by hydroextractive steam distillation.
    Type: Grant
    Filed: July 16, 1987
    Date of Patent: May 23, 1989
    Assignee: General Electric Company
    Inventor: John W. Fulmer
  • Patent number: 4830707
    Abstract: A caustic alkali solution is concentrated to high density or high caustic alkali concentration by evaporation under high pressure at elevated temperature and expansion of the thus obtained concentrated caustic alkali solution to low pressure, preferably below atmospheric pressure. The pressure difference between the high pressure evaporator and the low pressure expansion vessel is absorbed gradually by a pressure difference absorber, preferably comprising a liquid column in a U-shaped siphon tube, so that corrosion and erosion are reduced considerably.
    Type: Grant
    Filed: May 27, 1986
    Date of Patent: May 16, 1989
    Assignees: Sulzer-Escher Wyss AG, Ube Industries, Ltd.
    Inventors: Robert Winkler, Siro Sala, Yakayuki Kobayashi, Shinjiro Yokota
  • Patent number: 4826574
    Abstract: A circular section column with helical liquid flow is divided by a vertical wall 10 into two gas and vapor tight sectors A and B, each sector housing a series of trays.The trays disposed are designated respectively 1a, 2a and 3a for sector A and 1b, 2b and 3b for sector B.The distance D separating each two successive half trays of a given series is constant.On the other hand, the half-trays of one series are each staggered in the axial direction of the column with respect to the half-trays of the other series by a spacing d which is less than half the distance D.This arrangement allows a greater number of half-trays to be housed in a column of a given height, or the height of a column for a given number of trays to be decreased.
    Type: Grant
    Filed: February 18, 1987
    Date of Patent: May 2, 1989
    Assignee: Societe Nationale Elf Aquitaine
    Inventors: Jean P. Gourlia, Marie-Florence Thiebaut
  • Patent number: 4826575
    Abstract: A laboratory apparatus for continuously producing high purity distilled water includes a distillation flask, a carboy and condenser unit. A double walled microwave oven with a spacing between the walls, large enough to accommodate piping and valving means for controlling the flow of water to the distillation flask. The microwave oven supplies the heat to the system.
    Type: Grant
    Filed: July 27, 1987
    Date of Patent: May 2, 1989
    Inventor: Narbik A. Karamian
  • Patent number: 4824527
    Abstract: A fractional distillation system is provided for fractionating unequal liquid mixtures with lower heat throughput and lower energy consumption. For mixtures in which the heavy fraction is predominant (FIG. 1), a stripper (2) pre-fractionates part of the mixture at lower pressure and at no extra energy cost by being reboiled by an intermediate condenser (3). The pre-fractionator temperature range is preferably nested within (overlapped by) the distillation column (6) temperature range.
    Type: Grant
    Filed: June 10, 1986
    Date of Patent: April 25, 1989
    Inventor: Donald C. Erickson
  • Patent number: 4822455
    Abstract: A distilling and desalination apparatus comprising an evaporation chamber and a condensing chamber in which the evaporation chamber through a cooling circuit communicates by way of heat exchange with the condensing chamber and rotates in relation thereto. The evaporation chamber is constructed to form a thin fluid film on the inner surface of the evaporation chamber during rotation, surplus water being slung out along the edge and into channels and led tangentially to the rear by blades. The cooling circuit comprises a condensing portion and an evaporation portion, the fluid being evaporated along the inner surface of the coolant condensing portion, and fluid vapors being condensed along the outer surface of the coolant condensing portion, whereupon the drops of fluid are slung outwards and collected.
    Type: Grant
    Filed: January 7, 1987
    Date of Patent: April 18, 1989
    Assignee: Chas. Hude
    Inventor: Henrik-Gerner Olrik
  • Patent number: 4820385
    Abstract: An improved process for separating high purity alkyl glyoxylate from complex mixtures containing alkyl glyoxylate, alkyl glycolate, water, alcohol and miscellaneous impurities by an azeotropic distillation operation using an azeotroping agent selected from the group consisting of methylene dichloride, 1,1,1--trichloroethane, and benzene.
    Type: Grant
    Filed: February 18, 1988
    Date of Patent: April 11, 1989
    Assignee: Monsanto Company
    Inventors: Dario R. Cova, John M. Thorman
  • Patent number: 4813155
    Abstract: Liquid is evaporated from a particulate solid material by passing the material through a row of upwardly open, elongated interconnected cells and introducing superheated steam into the cells at their lower ends in a manner so as to impart to the particles a whirling movement. Dried particles are lifted out of the cells and into a common transfer zone and from said zone down into a discharge cell which has no steam supplied thereto. The dried material thus introduced into the discharge cell is discharged together with material which has passed the row of cells.The invention eliminates the need for effecting an initial disintegration of the solid particulate material.
    Type: Grant
    Filed: August 24, 1987
    Date of Patent: March 21, 1989
    Assignee: Aktieselskabet de Danske Sukkerfabrikker
    Inventors: Arne S. Jensen, Bjarne Winstrom-Olsen, Jorgen Borreskov
  • Patent number: 4814193
    Abstract: The present invention teaches of process for reducing the microbial population, in particular the pathogens, on the surface of food materials such as fruits and vegetables consisting of contacting the food material with a first aqueous medium having an acidic pH followed by transferring the food material to a second aqueous medium having a basic pH and washing the food material in tap water to remove the base residue on the surface of the food material.
    Type: Grant
    Filed: April 6, 1988
    Date of Patent: March 21, 1989
    Assignee: General Foods Corporation
    Inventors: Soliman Shenouda, Adolph Clausi, Ann M. Rogers, Nabil El-Hag
  • Patent number: 4812203
    Abstract: An evaporator which is formed, in combination, of a first evaporator of a centrifugal falling-film type; and a second evaporator having a shape formed of a heating side wall portion of a downward-pointing conical configuration, a cover portion defining at least one opening, through which a liquid to be treated is charged and resulting volatile components are discharged, and a bottom portion defining at least one opening permitting discharge of an evaporation residue. A scraping agitator is built in the second evaporator. The side wall portion is externally wrapped with a pipe or the like, whereby a heating medium is caused to pass therethrough for heating the side wall portion. The evaporation residue discharge opening of the first evaporator is connected to the opening of the cover portion of the second evaporator.The above evaporator is suitable to recover a volatile component from a high-viscosity liquid containing tar-like substances. It can achieve a high recovery rate.
    Type: Grant
    Filed: June 23, 1987
    Date of Patent: March 14, 1989
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Kenji Obata, Nobuhiko Yoneda, Masabumi Kataita, Yoshihiro I, Hironori Yamashita
  • Patent number: 4810327
    Abstract: In a falling film evaporator of the vertical-tube type in which liquid to be evaporated is supplied at the top on the outer surface of vertical heat exchanger tubes and the heat medium is supplied to the heat exchanger tubes at the bottom for flow inside the same, at least one larger tube element than the heat exchanger tubes is disposed between and fixed to tube plates at the both ends of the group of tubes to stabilize the group of tubes against tension and especially compression stresses.
    Type: Grant
    Filed: April 18, 1985
    Date of Patent: March 7, 1989
    Assignee: Ahlstromforetagen Svenska AB
    Inventor: Kjell Norrmen