Patents Represented by Attorney E. G. Seems
  • Patent number: 4824609
    Abstract: A process is provided to remove inert contaminants from a working compound employed for the manufacture of hydrogen peroxide by the reduction and oxidation of a solution of alkylated anthraquinones and derivatives. The contaminants are removed by the process of contacting the working compound, a solvent, and carbon dioxide to form a first portion and a residue portion, separating the two portions and recovering the purified working solution from the first portion.
    Type: Grant
    Filed: January 7, 1988
    Date of Patent: April 25, 1989
    Assignee: FMC Corporation
    Inventor: Dalbir S. Sethi
  • Patent number: 4790984
    Abstract: A process is provided for producing a powdered STPP hexahydrate particularly useful for use as a builder in a heavy duty detergent.
    Type: Grant
    Filed: August 10, 1987
    Date of Patent: December 13, 1988
    Assignee: FMC Corporation
    Inventors: Paul L. Hensler, Mark A. Bissell
  • Patent number: 4780295
    Abstract: The invention is a process to purify a solution of phosphoric acid by removing transition metal impurities such as iron, chromium and vanadium. In the process a solution of phosphoric acid in an organic solvent which is substantially immiscible with water is contacted with an aqueous solution of a salt of an alkali metal of phosphoric acid. The phosphoric acid recovered following the contacting contains a substantially lesser content of transition metal impurities.
    Type: Grant
    Filed: July 6, 1987
    Date of Patent: October 25, 1988
    Assignee: FMC Corporation
    Inventors: Jeffrey C. Dore, David P. Brochu, Richard E. Hall
  • Patent number: 4731173
    Abstract: The present invention is a layered article of manufacture or quilt suitable to be useful to construct an electrolytic cell for manufacturing hydrogen peroxide. In use the quilt is placed upon a planar anode and the upper surface contacted with a current collector.
    Type: Grant
    Filed: November 20, 1986
    Date of Patent: March 15, 1988
    Assignee: FMC Corporation
    Inventor: John S. C. Chiang
  • Patent number: 4668436
    Abstract: A process is provided to regenerate and purify a working solution for the manufacture of hydrogen peroxide by the reduction and oxidation of a solution of alkylated anthraquinones and derivatives. The regeneration and purification is effected by removing inerts by contacting the working solution and an noncyclic hydrocarbon to form a liquid first phase and a second phase, separating the two phases and recovering both the noncyclic hydrocarbon and the purified working solution by distillation.
    Type: Grant
    Filed: December 13, 1985
    Date of Patent: May 26, 1987
    Assignee: FMC Corporation
    Inventor: Dalbir S. Sethi
  • Patent number: 4663002
    Abstract: The invention provides a process to maintain the anolyte pH within a range of 1 pH unit while manufacturing potassium peroxydiphosphate on a commercial scale. The process comprises electrolyzing an alkaline anolyte containing potassium, phosphate, and hydroxyl ions at a platinum or noble metal anode optionally in the presence of a reaction promoter. The catholyte, an alkali metal hydroxide, is separated from the anolyte by at least two separating means, one separating means permeable to either anions or cations, but not both, and the other separating means permeable to an ion excluded by the first separating means.
    Type: Grant
    Filed: July 29, 1985
    Date of Patent: May 5, 1987
    Assignee: FMC Corporation
    Inventors: John S. C. Chiang, Michael J. McCarthy
  • Patent number: 4645615
    Abstract: A functional fluid composition is provided suitable for high shear applications employing a major amount of a tertiary-butylphenyl/phenyl phosphate and a minor amount of a polyol ester as a base stock and a homopolymer of polystyrene having a molecular weight between 200,000 and 300,000.
    Type: Grant
    Filed: February 27, 1986
    Date of Patent: February 24, 1987
    Assignee: FMC Corporation
    Inventor: Harry N. Drake
  • Patent number: 4631148
    Abstract: 1-allyl-2-hydroxyalkyl-3,4,5,6-tetrabromophthalates and flame retardant thermosetting polyester compositions containing them are described.
    Type: Grant
    Filed: March 15, 1985
    Date of Patent: December 23, 1986
    Assignee: FMC Corporation
    Inventors: Diza P. Braksmayer, Fui-Tseng H. Lee, Fred R. Scholer
  • Patent number: 4594170
    Abstract: The invention provides a method to liquify a heavy brine completion fluid containing chlorides. The combination of a persulfate and hydrogen peroxide was found to be more effective than either compound alone, or than a peroxygen plus an activator.
    Type: Grant
    Filed: June 25, 1984
    Date of Patent: June 10, 1986
    Assignee: FMC Corporation
    Inventors: Richard A. Brown, Robert D. Norris, Joseph C. Richards
  • Patent number: 4588555
    Abstract: A device and method of making and using the same in performing manual and automated chemical reactions and analyses of clinical assay mediums. Such device including a solid, microporous element formed of adsorbent material and having walls defining an internal cell structure comprised of interconnecting cells within which is contained a precise, measured quantity of reagents.
    Type: Grant
    Filed: October 4, 1982
    Date of Patent: May 13, 1986
    Assignee: FMC Corporation
    Inventor: Richard B. Provonchee
  • Patent number: 4467095
    Abstract: Glycolic esters, useful as anticholinergic drugs, have the formula ##STR1## wherein R.sub.1 is selected from the class consisting of phenyl and cyclopentyl; R.sub.2 represents a hydrocarbon radical of 3 to 6 carbon atoms; Z is selected from the class consisting of --CH.sub.2 --, --CH.sub.2 CH.sub.2 -- and --CH.sub.2 CH.dbd. and R.sub.3 represents an azacyclic ring selected from the class consisting of 1-methyltetrahydropyridine, 1-methyl-3-pyrroline, quinuclidine, 2-tropidine and 1-azabicyclo[2.2.2]oct-2-ene.
    Type: Grant
    Filed: February 10, 1969
    Date of Patent: August 21, 1984
    Assignee: FMC Corporation
    Inventors: Gino R. Treves, Burton M. Baum
  • Patent number: 4014943
    Abstract: There are disclosed, as novel compounds, high molecular weight hindered phenols based on the condensation of a nitroalkane with either formaldehyde and a di-t-butylphenol or with a substituted derivative of a di-t-butylphenol. The compounds are generally useful as antioxidants for a wide variety of organic substrates.
    Type: Grant
    Filed: April 30, 1976
    Date of Patent: March 29, 1977
    Assignee: FMC Corporation
    Inventor: Harry Dounchis
  • Patent number: 4013757
    Abstract: A high pressure thermal hydrolysis process is described which comprises heating acid waste streams resulting from the manufacture of cyanuric acid and chlorinated derivatives of cyanuric acid, containing cyanuric acid and amino-substituted cyanurates, in a pressure vessel, at a temperature of from about 225.degree. to about 275.degree. C, to effect decomposition of these materials into ammonia and carbon dioxide. This process provides an effective pollution control means, compatible with existing commercial facilities.
    Type: Grant
    Filed: April 17, 1975
    Date of Patent: March 22, 1977
    Assignee: FMC Corporation
    Inventors: Sidney Berkowitz, Charles V. Juelke
  • Patent number: 4006259
    Abstract: Fresh fruits and vegetables are preserved by coating them with a waxy protective adhering film formed by spraying the fruits and vegetables with a volatile petroleum solvent solution of a waxy film-forming material and an alkyl aryl sulfonic acid solution of a fungicidal benzimidazole of the formulae ##STR1## wherein R.sub.1 is methyl, ethyl, isopropyl or sec-butyl;R.sub.2 is hydrogen, alkyl of 1 to 6 carbon atoms or alkenyl of 3 to 6 carbon atoms andR.sub.3 is alkyl of 1 to 12 carbon atoms; ##STR2## wherein R is a five-membered heterocyclic ring containing nitrogen and sulfur andR.sub.1 is hydrogen, lower alkyl of 1 to 5 carbon atoms or lower alkenyl of 3 to 6 carbon atoms and ##STR3## and allowing the solvent to evaporate. Excellent protection against fungi is attained by using benomyl or thiabendazole as the benzimidazole fungicide.
    Type: Grant
    Filed: April 1, 1975
    Date of Patent: February 1, 1977
    Assignee: FMC Corporation
    Inventor: Arthur F. Kalmar