Patents Represented by Attorney, Agent or Law Firm Richard A. Paikoff
  • Patent number: 6273998
    Abstract: A drainage/retention aid comprising a combination of a) microparticles; and b) a vinylamine copolymer having the general structure: wherein m is from 1-99 mol %, n is from 0 to 50 mol % and o is from 1 to 99 mol %; A is selected from the group consisting of one or more repeating units having the following general structures: and salts thereof wherein p, q and r are mol percentages from 1 to 99, each R1 is independently H or CH3, and X is —CN, —COOR2, —CONR3R4, —OR5, —OCOR6, and mixtures thereof; wherein R2, R3, R4, R5, R6 are independently selected from H or C1 to C4 alkyl; and wherein the vinylamine copolymer has a charge density in a range of from 2 to 24 mEq/g.
    Type: Grant
    Filed: August 16, 1994
    Date of Patent: August 14, 2001
    Assignee: Betzdearborn Inc.
    Inventors: Lawrence Lu Kuo, Roger Yiming Leung, Steven R. Prescott, Thord Hassler
  • Patent number: 6251641
    Abstract: A treatment for enhancing the recovery of exopolysaccharide from bacterial cells is disclosed, which treatment includes adding to a cultivation medium containing said cells an amount, effective for the purpose of an alkylsulfosuccinate surfactant.
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: June 26, 2001
    Assignee: BetzDearborn Inc.
    Inventor: J. Barry Wright
  • Patent number: 5942219
    Abstract: A composition for controlling deposition having a high flash point and being substantially free of volatile organic compounds is disclosed, the composition being a stable solution containing a dialkylsulfosuccinate, an ethylene oxide/propylene oxide block copolymer and a mineral acid.
    Type: Grant
    Filed: December 9, 1997
    Date of Patent: August 24, 1999
    Assignee: BetzDearborn Inc.
    Inventor: William A. Hendriks
  • Patent number: 5932018
    Abstract: A process to enhance the physical separations in the wet milling process is disclosed. Specifically, a nonionic surfactant esterified with fatty acids acts to reduce the starch content of fiber in the wet milling process, thus increasing the quantity of starch recovered for subsequent processing into higher value products.
    Type: Grant
    Filed: January 26, 1998
    Date of Patent: August 3, 1999
    Assignee: BetzDearborn Inc.
    Inventor: William J. Palardy
  • Patent number: 5928875
    Abstract: A process using polymerize chain reaction (PCR) technology is described for the detection of spore forming bacteria in paper products and paper manufacturing streams and additives. Disclosed and claimed are novel nucleotide primers which specifically amplify sporulation genes common to spore forming bacteria. These primers produce gene fragments diagnostic for the presence of spore forming bacteria.
    Type: Grant
    Filed: May 27, 1998
    Date of Patent: July 27, 1999
    Assignee: BetzDearborn Inc.
    Inventors: Alexander W. Breen, Freddie L. Singleton
  • Patent number: 5885413
    Abstract: A process for the deinking of wastepaper is disclosed. The process comprises administering a sufficient amount of a branched alcohol alkoxylate surfactant to a sample of waste paper for which treatment is desired. The surfactant is effective for the flotation of the ink.
    Type: Grant
    Filed: November 15, 1996
    Date of Patent: March 23, 1999
    Assignee: BetzDearborn Inc.
    Inventors: Sandra K. Richmann, Frank J. Sutman
  • Patent number: 5871691
    Abstract: A method and compounds for inhibiting and controlling corrosion is disclosed. The method is particularly effective at inhibiting or preventing corrosion of ferrous-based metals in contact with aqueous systems such as cooling water systems. The method comprises introducing into the aqueous system a compound of the general formula: ##STR1## wherein R is hydrogen, alkyl, aryl, substituted alkyl or substituted aryl; R' and R" are each independently hydrogen, C.sub.1-4 alkyl or C.sub.1-4 substituted alkyl; Z is O, S, NH, or NR, where R is as described above; n is a positive integer greater than 1; f is a positive integer; and M is hydrogen, a water soluble cation (e.g., NH.sub.4.sup.+, alkali metal), or a C.sub.1 -C.sub.3 alkyl group.
    Type: Grant
    Filed: September 27, 1995
    Date of Patent: February 16, 1999
    Assignee: BetzDearborn Inc.
    Inventors: William S. Carey, William C. Ehrhardt, Andrew Solov
  • Patent number: 5866013
    Abstract: A method and composition for simultaneously controlling the deposition of scale and the formation of corrosion in a cooling water system comprising adding to the system a combination of (a) a water soluble copolymer having the structure: ##STR1## wherein R.sub.1 is H or lower (C.sub.1 -C.sub.4) alkyl, F is H.sub.2 or O, M is a water soluble cation, R.sub.2 is (CH.sub.2 --CH.sub.2 --O).sub.n, ##STR2## or mixture of both, n is an integer of from 1 to about 40, R.sub.3 is H, lower (C.sub.1 -C.sub.4) alkyl or an acetate, and (b) a water soluble polymer characterized by the structural formula: ##STR3## wherein R.sub.1 is H or lower alkyl (C.sub.1 -C.sub.3); R.sub.2 is OH, OM, or NH.sub.2 ; M is a water soluble cation; R.sub.
    Type: Grant
    Filed: August 12, 1997
    Date of Patent: February 2, 1999
    Assignee: BetzDearborn Inc.
    Inventors: Stephen M. Kessler, Donald T. Freese
  • Patent number: 5866011
    Abstract: A method of treating water to inhibit the formation of salt scale is disclosed. The method is particularly effective at inhibiting the formation and deposition of mineral salts in brine concentration and evaporation systems. The method comprises introducing into the system a polyepoxysuccinic acid of the general formula: ##STR1## where n ranges from about 2 to about 50, M is hydrogen or a water soluble cation such as Na.sup.+, NH.sub.4.sup.+ or K.sup.+ and R is hydrogen, C.sub.1-4 alkyl or C.sub.1-4 substituted alkyl.
    Type: Grant
    Filed: April 30, 1997
    Date of Patent: February 2, 1999
    Assignee: BetzDearborn Inc.
    Inventor: Gregory J. McGiffney
  • Patent number: 5843238
    Abstract: A method and composition for enhancing the dewatering of starch are disclosed, the composition comprising a combination of a polyoxyethylene-polyoxypropylene (EO-PO) block copolymer and sodium lauryl sulfate.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: December 1, 1998
    Assignee: BetzDearborn Inc.
    Inventor: William J. Palardy
  • Patent number: 5840850
    Abstract: Methods of enhancing the dewatering of gluten are disclosed. The methods comprise adding an anionic surfactant to the wet gluten prior to dewatering, as in vacuum dewatering equipment. Particularly effective surfactants are sulfates and sulfonates.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: November 24, 1998
    Assignee: BetzDearborn Inc.
    Inventor: William J. Palardy
  • Patent number: 5833881
    Abstract: A stable aqueous solution comprising a water soluble salt of a magnesium compound, a surfactant and a calcium salt inhibitor is used to reduce deposits in kilns or furnaces used to make iron ore agglomerates, known as pellets, during iron ore calcination.
    Type: Grant
    Filed: April 22, 1997
    Date of Patent: November 10, 1998
    Assignee: BetzDearborn Inc.
    Inventor: Donald C. Roe
  • Patent number: 5788885
    Abstract: A treatment for reducing viscosity and inhibiting settling of an aqueous 30% or higher by weight magnesium hydroxide slurry which comprises adding to the slurry an amount, effective for the purpose of a combination of an alkyl sulfosuccinate surfactant, an alkylaryl sulfonate surfactant, a xanthan gum and a clay, and optionally a water soluble polycarboxylate.
    Type: Grant
    Filed: March 12, 1997
    Date of Patent: August 4, 1998
    Assignee: BetzDearborn Inc.
    Inventors: Gregory J. Pomrink, Bruce K. Fillipo
  • Patent number: 5789239
    Abstract: The present invention relates to the use of at least one enzyme component from the group consisting of carbohydrases, proteases, lipases and glycol proteases and a short-chained glycol component for the avoidance of slime formation and/or for the removal of biofilm on surfaces of water-bearing systems, in particular of industrial process-water systems. The enzyme component(s) and the glycol component can be added to the water-bearing system either separately, i.e. at different points, or in the form of an enzymatic composition containing the enzyme component(s) and the glycol component.
    Type: Grant
    Filed: December 4, 1996
    Date of Patent: August 4, 1998
    Assignee: BetzDearborn Inc.
    Inventors: Mark Emile Eyers, Kristine Laura Ignatius Van Pee, Jozef Van Poele, Jurgen Friedrich Schuetz, Achim Paul Schenker
  • Patent number: 5776535
    Abstract: A method of reducing the moisture content of an aqueous stream containing corn fiber during the removal of water from the corn fiber is disclosed, which comprises adding to the stream an effective amount of a polyglycerol ester surfactant.
    Type: Grant
    Filed: October 16, 1996
    Date of Patent: July 7, 1998
    Assignee: BetzDearborn Inc.
    Inventor: William J. Palardy
  • Patent number: 5777890
    Abstract: In a material handling system in which a chemical treatment and water are added to a bulk solid, a method and apparatus for minimizing the amount of moisture added to the bulk solid while effectively controlling dust in the system. A moisture analyzing means monitors the surface moisture level of the bulk solid, and a calibration/measuring means determines the proper amount of chemical and water to be fed to the system for dust control. There are associated means for feeding the chemical treatment and water to the bulk solid, and a dust analyzing means, which monitors dust levels in the system and sends an electrical signal to the calibration/measuring means in order to adjust chemical feed and water flow in the system.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: July 7, 1998
    Assignee: BetzDearborn Inc.
    Inventors: James D. Halley, Michael J. Mowbray, Rodger D. Kurtz
  • Patent number: 5763482
    Abstract: An antimicrobial composition and method for controlling the growth of microbes in an aqueous system is disclosed, the composition comprising an amount, effective for the purpose of a 2-bromo-2- (bromomethyl)-glutaronitrile and a quaternary ammonium compound.
    Type: Grant
    Filed: March 20, 1997
    Date of Patent: June 9, 1998
    Assignee: BetzDearborn Inc.
    Inventors: Donald J. Paterson, Howard A. Cash
  • Patent number: 5755971
    Abstract: A method of inhibiting the precipitation and deposition of calcium oxalate scale in an aqueous system is disclosed, in which an effective amount of a combination of a high molecular weight lignosulfonate compound and a phosphate compound is added to the system.
    Type: Grant
    Filed: February 18, 1997
    Date of Patent: May 26, 1998
    Assignee: BetzDearborn Inc.
    Inventors: William J. Palardy, Nancy A. DiAngelo
  • Patent number: 5736058
    Abstract: A method for inhibiting the microbial adhesion on surfaces in contact with an aqueous system is disclosed, which comprises adding to the system a treatment comprising an alkylsulfosuccinate surfactant.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: April 7, 1998
    Assignee: BetzDearborn Inc.
    Inventors: J. Barry Wright, Daniel L. Michalopoulos
  • Patent number: 5736056
    Abstract: A treatment for enhancing the activity of biocidal compounds to control the growth of microbes in an aqueous system is disclosed, which comprises adding to said compounds an effective amount of an alkylsulfosuccinate surfactant.
    Type: Grant
    Filed: January 15, 1997
    Date of Patent: April 7, 1998
    Assignee: BetzDearborn Inc.
    Inventors: J. Barry Wright, Daniel Michalopoulos