Patents Represented by Attorney Charles B. Rodman
  • Patent number: 7745219
    Abstract: The enumeration and analysis of residual white blood cells in a sample of leukocyte-reduced blood products is conducted by forming a suspension of the leukocyte-reduced blood products with a sufficient amount of a lysing reagent. The lysing reagent comprises a buffer with a low molar concentration, and a non-ionic surfactant. The suspension of leukocyte-reduced blood products and the lysing reagent is incubated for a sufficient time at a temperature sufficient to selectively lyse the platelets and red blood cells without damaging the white blood cells. The white blood cells of the lysed blood products are then contacted with a suitable dye to stain the white blood cells and the number of stained white blood cells is measured. The lysing reagent is free of harsh organic solvents which can damage the plastic components of automated clinical analyzers.
    Type: Grant
    Filed: July 21, 2004
    Date of Patent: June 29, 2010
    Assignee: Siemens Healthcare Diagnostics Inc.
    Inventors: Michael J. Sommer, Pasquale Degiorgio, Bronislaw P. Czech, Gena Fischer, E. Sabrinah Chapman, David Zelmanovic, Jolanta Kunicka
  • Patent number: 7214541
    Abstract: A variable rate particle counter for adjusting the volumetric delivery rate of fluid to a flow cell based upon an initial particle count rate in order to effectively “tune” the final dilution of sample sheath flow to the particle concentration of the sample. A sheath fluid syringe pump and a test sample syringe pump are driven by motors which are adjusted by a data analyzer. The data analyzer compares a particle count rate measured by a detection assembly to a predetermined reference value and determines if the count rate is too high or to low. Accordingly, one of several pump profiles is initiated to adjust the flow rate of the sheath fluid or test sample or both. Advantageously, the low cell count precision is improved and the upper limit cell count is expanded.
    Type: Grant
    Filed: April 13, 2000
    Date of Patent: May 8, 2007
    Assignee: Siemens Medical Solutions Diagnostics
    Inventor: Gregory A. Farrell
  • Patent number: 5744067
    Abstract: This invention relates to the production of hydrogen-rich gas by the partial oxidation of a saturated gaseous hydrocarbonaceous fuel or a mixture of saturated gaseous hydrocarbonaceous fuel and a liquid hydrocabonaceous fuel in a gas generator. In the process, a saturated gaseous hydrocarbonaceous fuel from a subsequent fuel gas saturator is preheated by indirect heat exchange with a portion of shifted process gas stream from a catalytic water-gas direct shift conversion zone and reacted in said partial oxidation gas generator. The process gas stream from the noncatalytic partial oxidation gas generator is quench cooled and scrubbed with water and preheated by indirect heat exchange with a second portion of the process gas stream from the shift conversion zone prior to catalytically reacting the CO and H.sub.2 O in the process gas stream in the shift conversion zone to increase its H.sub.2 content.
    Type: Grant
    Filed: May 21, 1996
    Date of Patent: April 28, 1998
    Assignee: Texaco Inc.
    Inventor: Frederick Charles Jahnke
  • Patent number: 5705035
    Abstract: A discharge system is used with a tire liquefaction process using a reactor. The system includes a receiver receiving unreacted components, including oil coated metal from the reactor. The unreacted components are moved through a pyrolysis reactor where they are heated to a temperature sufficient to convert the unreacted hydrocarbon components to a liquid and to a gas by way of pyrolysis. The liquid and the majority of gas are drawn off from the pyrolysis reactor. Discharge apparatus connected to the pyrolysis reactor converts the remaining gas to a condensate and discharges the metal. The condensate is also removed for further use.
    Type: Grant
    Filed: May 28, 1996
    Date of Patent: January 6, 1998
    Assignee: Texaco, Inc.
    Inventors: Vahan Avetisian, Craig Joseph Castagnoli, Suk-Bae Cha
  • Patent number: 4092357
    Abstract: A method for improving the yield of perchloromethyl mercaptan by including in the reaction mixture amounts of difunctional carbonyl compounds effective to suppress the formation of undesirable byproducts, such as carbon tetrachloride and sulfur monochloride.
    Type: Grant
    Filed: December 22, 1976
    Date of Patent: May 30, 1978
    Assignee: Stauffer Chemical Company
    Inventors: Carl C. Greco, Edward N. Walsh
  • Patent number: 4054678
    Abstract: A potassium modified 1:3:8 sodium aluminum phosphate having improved flow characteristics and dust properties particularly suited for refrigerated baking applications.
    Type: Grant
    Filed: March 30, 1976
    Date of Patent: October 18, 1977
    Assignee: Stauffer Chemical Company
    Inventors: Robert E. Benjamin, James C. Anglea, Thomas E. Edging, Jerry D. Griffith, A. J. Patterson, Thelton A. Webster
  • Patent number: 4053561
    Abstract: A method for removing fluoride ions from phosphoric acid by neutralizing said acid to a pH between about 5 and about 9, contacting the neutral salt solution thereby formed with an insoluble alkaline earth metal phosphate salt, and lowering the pH to convert the solution back to a purified acid.
    Type: Grant
    Filed: August 14, 1975
    Date of Patent: October 11, 1977
    Assignee: Stauffer Chemical Company
    Inventor: Mazin R. Irani
  • Patent number: 4051201
    Abstract: The present invention is a process for making thiobisphenol phosphorus acid esters by reacting aryl esters of pentavalent phosphorus acids with sulfur halides. The invention also encompasses groups of novel compounds made by the process.
    Type: Grant
    Filed: July 23, 1975
    Date of Patent: September 27, 1977
    Assignee: Stauffer Chemical Company
    Inventor: Edward D. Weil
  • Patent number: 4046885
    Abstract: Methoxy-substituted cyanophenyl ester derivatives of phosphinic, phosphonic, phosphoric, thiophosphinic, thiophosphonic, and thiophosphoric acids having the general formula: ##STR1## wherein R and R.sup.1 are independently selected from the group consisting of lower alkyl, chloro-substituted lower alkyl, lower alkoxy, phenyl, phenoxy and lower dialkylamide, and X is oxygen or sulfur. The compounds are effective pesticides especially in the control of houseflies, American cockroach, milkweed bug and two-spotted mite. Representative compounds are O-ethyl-O-(2-methoxy-4-cyanophenyl) ethyl phosphonothioate and O,O-dimethyl-O-(2-methoxy-4-cyanophenyl) phosphorothioate.
    Type: Grant
    Filed: May 20, 1976
    Date of Patent: September 6, 1977
    Assignee: Stauffer Chemical Company
    Inventor: Edward N. Walsh
  • Patent number: 4032584
    Abstract: A stabilized methylene chloride composition consisting essentially of methylene chloride and stabilizing amounts of mixed amylenes, propylene oxide, butylene oxide and tertiary butylamine.
    Type: Grant
    Filed: May 3, 1976
    Date of Patent: June 28, 1977
    Assignee: Stauffer Chemical Company
    Inventor: Mazin R. Irani
  • Patent number: 3993735
    Abstract: A method for purifying a crude or wet process phosphoric acid to a technical grade phosphoric acid comprising a sequence of steps including diluting the crude phosphoric acid, contacting the crude phosphoric acid with activated carbon, neutralization of the acid to a phosphate salt solution, contacting the phosphate salt solution with activated carbon and reconversion to a purified technical grade phosphoric acid.
    Type: Grant
    Filed: August 14, 1975
    Date of Patent: November 23, 1976
    Assignee: Stauffer Chemical Company
    Inventor: Mazin R. Irani
  • Patent number: 3993733
    Abstract: A process for converting wet process phosphoric acid to food grade alkali metal phosphates by a sequence of steps including extraction of the wet process acid, partial neutralization, dilution with water, contact with activated carbon, neutralization to a pH of from about 5 to about 9, contact with activated carbon, contact with insoluble alkaline earth metal phosphate salts and recovery of the dissolved alkali metal phosphate product in solution.
    Type: Grant
    Filed: August 14, 1975
    Date of Patent: November 23, 1976
    Assignee: Stauffer Chemical Company
    Inventor: Mazin R. Irani
  • Patent number: 3993736
    Abstract: A process for purifying wet process phosphoric acid to a food grade phosphoric acid by a sequence of steps including extraction, partial neutralization, dilution with water, contact with activated carbon, neutralization to a pH of from about 5 to about 9, contact with activated carbon, contact with an insoluble alkaline earth metal phosphate salt, reconversion to a purified food grade phosphoric acid, and recovery of the product acid.
    Type: Grant
    Filed: August 14, 1975
    Date of Patent: November 23, 1976
    Assignee: Stauffer Chemical Company
    Inventor: Mazin R. Irani
  • Patent number: 3986990
    Abstract: Polyalkylene glycol alkyl polyphosphites characterized by low OH numbers and relatively little glycol in the side chain are prepared by reacting a tertiary phosphite with a polyalkylene glycol in a molar ratio of from about 1 to 1.5 moles of phosphite per mole of glycol. These polyphosphites have wide utility as intermediates in the preparation of flame retardants suitable for use in flexible urethane foams.
    Type: Grant
    Filed: June 27, 1974
    Date of Patent: October 19, 1976
    Assignee: Stauffer Chemical Company
    Inventor: Silvio L. Giolito
  • Patent number: 3983188
    Abstract: Methoxy-substituted cyanophenyl ester derivatives of phosphinic, phosphonic, phosphoric, thiophosphinic, thiophosphonic, and thiophosphoric acids having the general formula: ##EQU1## wherein R and R.sup.1 are independently selected from the group consisting of lower alkyl, chloro-substituted lower alkyl, lower alkoxy, phenyl, phenoxy and lower dialkylamido, and X is oxygen or sulfur. The compounds are effective pesticides especially in the control of houseflies, American cockroach, milkweed bug and two-spotted mite. Representative compounds are O-ethyl-O-(2-methoxy-4-cyanophenyl) ethyl phosphonothioate and O,O-dimethyl-O-(2-methoxy-4-cyanophenyl) phosphorothioate.
    Type: Grant
    Filed: April 21, 1967
    Date of Patent: September 28, 1976
    Assignee: Stauffer Chemical Company
    Inventor: Edward N. Walsh
  • Patent number: 3969152
    Abstract: A final rinse for conversion coated metal surfaces comprising an aqueous acidic solution of a salt of a rare earth metal is disclosed. The rinse of the present invention not only yields coatings having excellent corrosion resistance and superior receptivity toward subsequent coatings of paint but is also easily disposable without harmful effects on the environment.
    Type: Grant
    Filed: April 15, 1974
    Date of Patent: July 13, 1976
    Assignee: Stauffer Chemical Company
    Inventor: Donald J. Melotik
  • Patent number: 3956154
    Abstract: An aircraft hydraulic fluid comprising (1) a base stock material, and (2) a low molecular weight polyester additive consisting of C.sub.2 -C.sub.18 dicarboxylic acid and a C.sub.2 -C.sub.18 diol. By incorporating about 1 to about 20 percent by weight of said additive in said hydraulic fluid, an essentially shear stable hydraulic fluid results.
    Type: Grant
    Filed: February 11, 1974
    Date of Patent: May 11, 1976
    Assignee: Stauffer Chemical Company
    Inventors: Theodore A. Marolewski, Peter E. Timony
  • Patent number: 3941708
    Abstract: A hydraulic fluid comprising (1) a base stock material, and (2) a cycloalkyl epoxide and a phenyl naphthylamine in a ratio of from about 1:10 to about 10:1 by weight. By incorporating about 0.1 to about 10 percent by weight of the hydraulic fluid of said epoxide and amine in said hydraulic fluid, acid buildup therein is controlled.
    Type: Grant
    Filed: February 11, 1974
    Date of Patent: March 2, 1976
    Assignee: Stauffer Chemical Company
    Inventors: William F. Gentit, Theodore A. Marolewski
  • Patent number: 3931360
    Abstract: A method for decolorizing and stabilizing alkylphenyl esters of phosphoric acid which comprises contacting the esters with an effective amount of a soluble nitrilotriacetate salt for a sufficient length of time to decolorize and stabilize the esters against subsequent color formation.
    Type: Grant
    Filed: December 23, 1974
    Date of Patent: January 6, 1976
    Assignee: Stauffer Chemical Company
    Inventor: Silvio L. Giolito
  • Patent number: 3931362
    Abstract: A method for decolorizing and stabilizing alkylphenyl esters of phosphoric acid which comprises contacting the esters with an effective amount of an oxidizable nitrogenous compound for a sufficient length of time to decolorize and stabilize the esters against subsequent color formation.
    Type: Grant
    Filed: December 23, 1974
    Date of Patent: January 6, 1976
    Assignee: Stauffer Chemical Company
    Inventors: Silvio L. Giolito, Fred Jaffe