Patents Represented by Attorney Steven D. Boyd

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  • Aqueous polymerization method for poly(isopropenylphosphonic acid)
    Patent number: 5519102
    Abstract: A method of preparing poly(isopropenylphosphonic acid) is disclosed, which provides a high yield with low initiator charge. The method comprises preparing poly(isopropenylphosphonic acid) by polymerizing a mixture of isopropenylphosphonic acid and isopropenylphosphonic acid anhydride, preferably in an aqueous solution.
    Type: Grant
    Filed: May 9, 1995
    Date of Patent: May 21, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: Michael A. Cady, William S. Carey, Andrew Solov
  • Metal working emulsion cleaner
    Patent number: 5518640
    Abstract: An emulsion cleaner formulation is provided which is free of toxic or hazardous materials listed under SARA 313. The emulsion cleaner formulation employs a blend of triethanolamine soap of tall oil fatty acid, polyethylene glycol (400) dioleate and polyethylene glycol (400) monooleate as a stabilizing agent. The emulsion cleaner may also include a nonionic surfactant. The emulsion cleaner also includes both oil soluble and water soluble rust inhibitors.
    Type: Grant
    Filed: September 27, 1995
    Date of Patent: May 21, 1996
    Assignee: Betz Laboratories, Inc.
    Inventor: Edward A. Rodzewich
  • Alkyl-allylphosphonate copolymer used for boiler water treatment
    Patent number: 5512183
    Abstract: A water soluble isopropenylphosphonic acid copolymer composition and method of use thereof are disclosed. The copolymer comprises repeat units (a) of the formula: ##STR1## wherein X=OH or OM, wherein M is a cation, and repeat units (b) of the formula: ##STR2## wherein R.sub.1 and R.sub.2 are independently hydrogen, C.sub.1-10 linear or branched alkyl, phenyl or alkyl substituted phenyl. The copolymers are effective in inhibiting the precipitation of scale forming salts and also act to inhibit corrosion in boiler water systems.
    Type: Grant
    Filed: December 7, 1994
    Date of Patent: April 30, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: Scott M. Boyette, Alan E. Goliaszewski
  • Cationic graft polymer agglomeration agents for mineral bearing ores
    Patent number: 5512636
    Abstract: Agglomerating agent and method for use in heap leaching of mineral bearing ores. Cationic polymers alone or in combination with cement or lime are highly effective agglomerating agents in acidic or alkaline leaching operations. The cationic polymers are preferably graft copolymers, block copolymers or linear copolymers of acrylamide and diallyl dimethyl ammonium chloride.
    Type: Grant
    Filed: September 6, 1994
    Date of Patent: April 30, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: David M. Polizzotti, Wen P. Liao, Donald C. Roe
  • Visible dried-in-place non-chrome polyacrylamide based treatment for aluminum
    Patent number: 5505792
    Abstract: A method of providing color to a polyacrylamide based, dried-in-place, non-chromate conversion coating is provided. The addition of a phthalo green pigment and optionally a nonionic surfactant to an aqueous, dried-in-place conversion coating treatment solution provides for a colored conversion coating without adversely affecting the corrosion resistance or adhesion properties of the conversion coating.
    Type: Grant
    Filed: December 14, 1993
    Date of Patent: April 9, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: Jiangbo Ouyang, Philip D. Deck, William L. Harpel, Bruce V. Haberle
  • Biological and dust control methods for bulk/granular solids
    Patent number: 5500220
    Abstract: A foam carrier for a dust control agent and a biological control agent is provided to control fugitive dust dissemination and biological activity in bulk/granular solids.
    Type: Grant
    Filed: January 17, 1995
    Date of Patent: March 19, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: Donald C. Roe, Dwight P. Davis, Kevin C. Manning, Edmund J. Bockowski
  • Composition for and method of monitoring dried-in-place non-chrome polyacrylamide based treatments for metals
    Patent number: 5500053
    Abstract: A process for measuring the coating weight of a dried-in-place non-chromate polyacrylamide/surfactant based conversion coating is disclosed. An ammonium hexafluorotitanate tracer added to such a conversion coating was found to not adversely affect coating properties. The tracer was found to remain proportional to the polymer matrix when the coating was analyzed by X-ray fluorescence.
    Type: Grant
    Filed: June 16, 1995
    Date of Patent: March 19, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: Jiangbo Ouyang, William L. Harpel
  • Method of inhibiting barium sulfate and strontium sulfate scale at low pH
    Patent number: 5486294
    Abstract: Disclosed is a method of inhibiting the formation of scales such as barium and strontium sulfate in low pH aqueous system. The method involves treating the aqueous system with a scale control treatment including polyepoxysuccinic acid. Typical low pH aqueous systems where the present invention is particularly useful are oilfield produced water, resin bed water softeners during acid regeneration operations.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: January 23, 1996
    Assignee: Betz Laboratories, Inc.
    Inventor: J. Michael Brown
  • Detoxification for quaternary ammonium compounds with lignosulfonates
    Patent number: 5486296
    Abstract: Detoxification of quaternary ammonium compounds using detoxifying amounts of lignosulfonate.
    Type: Grant
    Filed: March 1, 1995
    Date of Patent: January 23, 1996
    Assignee: Betz Laboratories, Inc.
    Inventors: Joseph C. Petrille, III, Stephen R. Vasconcellos, Michael W. Werner
  • Method and apparatus for cleaning tubes of heat exchangers
    Patent number: 5473787
    Abstract: Apparatus and method are provided for on-line cleaning of the tubes of a heat exchanger. Tube cleaners are comprised of two members, a rigid flotation member and an elastomeric cleaning member. The cleaner has a selected density to allow uniform distribution through the tubes and to allow recovery by surface extraction or by strainers. Pressures as the cleaner enters or flows along a tube may be measured and selected.
    Type: Grant
    Filed: June 21, 1994
    Date of Patent: December 12, 1995
    Assignee: Betz Laboratories, Inc.
    Inventor: James F. Echols
  • Polyvinyl alcohol agglomeration agents for mineral bearings ores
    Patent number: 5472675
    Abstract: An agglomerating agent for use in the heap leaching of mineral bearing ores is disclosed. The agglomerating agent is a polyvinyl alcohol of moderate to high molecular weight which is partially or fully hydrolyzed. The polyvinyl alcohol agglomerating agent can be used alone or in combination with cement or lime in acidic or alkaline heap leaching operations.
    Type: Grant
    Filed: September 6, 1994
    Date of Patent: December 5, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: David M. Polizzotti, Donald C. Roe
  • Composition and method of forming a black no-rinse conversion coating on metal surfaces
    Patent number: 5470613
    Abstract: A black, no-rinse conversion coating on metal surfaces is provided. The treatment of a metal such as aluminum or aluminum alloys with a composition of hexavalent chromium, an acrylic/itaconic modified styrene butyl acrylate polymer resin, a fluoacid, and carbon black results in a black no-rinse conversion coating.
    Type: Grant
    Filed: January 27, 1994
    Date of Patent: November 28, 1995
    Assignee: Betz Laboratories, Inc.
    Inventor: Edward A. Rodzewich
  • Low foaming aqueous cleaning and passivating treatment for metals
    Patent number: 5468412
    Abstract: A cleaning and passivation treatment for metal surfaces which is essentially phosphate free and resistant to foaming in soft water is disclosed. The treatment solution includes relatively water insoluble surfactants without the use of conventional hydrotropes. The treatment solution includes an aqueous solution of monoethanolamine, boric acid, a non-ionic surfactant having a cloud point below about 25.degree. C. and a hydrotropic coupling agent preferably a combination of caprylic acid and capric acid.
    Type: Grant
    Filed: September 14, 1994
    Date of Patent: November 21, 1995
    Assignee: Betz Laboratories, Inc.
    Inventor: Edward A. Rodzewich
  • Methods of controlling scale formation in the presence of metal ions in aqueous systems
    Patent number: 5468393
    Abstract: A method of inhibiting scale formation in acidic aqueous systems where metal ions such as Al.sup.+3 and Fe.sup.+3 are present by employing a polyepoxysuccinic acid in combination with a metal ion binding material.
    Type: Grant
    Filed: October 20, 1994
    Date of Patent: November 21, 1995
    Assignee: Betz PaperChem, Inc.
    Inventors: Davor F. Zidovec, Alexander D. Fisher, deceased
  • Composition and process for treating metal surfaces
    Patent number: 5451431
    Abstract: A non-chromate conversion coating for metal surfaces such as aluminum, steel, galvanized steel and zinc-aluminum steel consisting of an aqueous solution of a cationic polymer, an alkaline aqueous silicate and an organofunctional silane.
    Type: Grant
    Filed: October 31, 1994
    Date of Patent: September 19, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: Deborah L. Purnell, Brenda S. Morris, David W. Reichgott
  • Composition for a method of monitoring dried-in-place non-chrome polyacrylamide based treatments for metals
    Patent number: 5451270
    Abstract: A process for measuring the coating weight of a dried-in-place non-chromate polyacrylamide/surfactant based conversion coating is disclosed. An ammonium hexafluorotitanate tracer added to such a conversion coating was found to not adversely affect coating properties. The tracer was found to remain proportional to the polymer matrix when the coating was analyzed by X-ray fluorescence.
    Type: Grant
    Filed: September 16, 1994
    Date of Patent: September 19, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: Jiangbo Ouyang, William L. Harpel
  • Composition and method of forming a black no-rinse conversion coating on metal surfaces
    Patent number: 5441773
    Abstract: A black, no-rinse conversion coating on metal surfaces is provided. The treatment of a metal such as aluminum or aluminum alloys with a composition of hexavalent chromium, a modified styrene acrylic resin, carbon black thickeners, surfactants and coalescents results in a black no-rinse conversion coating. The black coating provides corrosion resistance and is resistant to gasoline, hot oil and ethylene glycol. The coating solution is particularly effective on complex shapes having closely spaced parts such as automotive radiators or condensers.
    Type: Grant
    Filed: August 24, 1994
    Date of Patent: August 15, 1995
    Assignee: Betz Laboratories, Inc.
    Inventor: Edward A. Rodzewich
  • Methods for controlling dust in high temperature systems by contacting dust with an aqueous sodium silicate solution
    Patent number: 5415795
    Abstract: Method for inhibiting dust emissions from hot (>150.degree. F.) substrates are provided which comprise adding to the substrate an aqueous solution of sodium silicate.
    Type: Grant
    Filed: June 16, 1994
    Date of Patent: May 16, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: Donald C. Roe, Bradley J. Utzka
  • Composition and process for coating metals
    Patent number: 5412011
    Abstract: A non-chromium conversion coating for metal surfaces such as aluminum, steel, galvanized steel and zinc-aluminum steel consisting of an aqueous solution of an anionic polyacrylamide copolymer, an inorganic silicate and an organofunctional silane.
    Type: Grant
    Filed: October 15, 1993
    Date of Patent: May 2, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: Brenda S. Morris, Jiangbo Ouyang, David W. Reichgott
  • Method of inhibiting reservoir scale
    Patent number: 5409062
    Abstract: A method of inhibiting the formation and deposition of scale in the production of hydrocarbons from subterranean reservoirs. The method is particularly effective at inhibiting the formation and deposition of calcium and barium scales in the produced waters of hydrocarbon recovery operations. The method comprises introducing into the produced water a polyepoxysuccinic acid of the general formula: ##STR1## where n ranges from about 2 to about 11, M is hydrogen or a water soluble cation such as Na.sup.+, NH.sub.4.sup.+, K.sup.+ and R is hydrogen, C.sub.1-4 alkyl or C.sub.1-4 substituted alkyl.
    Type: Grant
    Filed: December 17, 1993
    Date of Patent: April 25, 1995
    Assignee: Betz Laboratories, Inc.
    Inventors: J. Michael Brown, Gene F. Brock