Patents Represented by Attorney Ronald G. Brookens
  • Patent number: 5374684
    Abstract: Clusters of water-swellable polymer particles, having high rates of absorbency without gel-blocking are prepared by suspending water-swellable polymer particles in an inert hydrophobic liquid, such as hydrocarbon, and slowly adding to the particles a suspension of an aqueous solution optionally containing an .alpha.,.beta.-ethylenically unsaturated monomer in an inert hydrophobic liquid.
    Type: Grant
    Filed: September 1, 1993
    Date of Patent: December 20, 1994
    Assignee: The Dow Chemical Company
    Inventor: Eva F. Tai
  • Patent number: 5372944
    Abstract: A process for converting halogenated aliphatic hydrocarbons to halohydrins using a microorganism selected from Rhodococcus species ATCC 55388 and mutants thereof are described.
    Type: Grant
    Filed: October 14, 1993
    Date of Patent: December 13, 1994
    Assignee: The Dow Chemical Company
    Inventor: Paul E. Swanson
  • Patent number: 5334603
    Abstract: A compound is prepared which corresponds to the formula: ##STR1## This compound has been found to exhibit antimicrobial activity in industrial and commercial applications and compositions containing this compound are so employed.
    Type: Grant
    Filed: November 16, 1993
    Date of Patent: August 2, 1994
    Assignee: The Dow Chemical Company
    Inventors: Ravi B. Shankar, R. Garth Pews, Duane R. Romer
  • Patent number: 5270307
    Abstract: Pyrrolo-(1,2-b)-(1,2)-benzothiazin-10-one is prepared which corresponds to the formula: ##STR1## This compound has been found to exhibit antimicrobial activity in industrial and commercial applications and compositions containing this compound are so employed.
    Type: Grant
    Filed: March 26, 1993
    Date of Patent: December 14, 1993
    Assignee: The Dow Chemical Company
    Inventors: Dallas K. Bates, Kelley A. Tafel
  • Patent number: 5187084
    Abstract: Apparatus and method for automatically developing, maintaining and repetitively duplicating a selectable predetermined temperature profile for replicating and amplifying a sequence of a stretch of DNA or RNA through use of a polymerase. An array of sample-containing vessels is supported in a reaction chamber through which a heat transfer medium in heat-exchange relationship with the vessels. The temperature of the air is controlled as a function of time to provide a preselectable sequence defining a temperature profile. The profile is cyclically repetitively reproduced to effect amplification of the desired sequence of DNA or RNA.
    Type: Grant
    Filed: June 22, 1990
    Date of Patent: February 16, 1993
    Assignee: The Dow Chemical Company
    Inventor: G. Anders Hallsby
  • Patent number: 5156667
    Abstract: Derivatives of 4-((aryloxy)phenoxy)alkenols, their preparation and use as active herbicides for the postemergent control of grassy weeds and especially the control of said weeds in the presence of corn plants are disclosed.
    Type: Grant
    Filed: April 12, 1991
    Date of Patent: October 20, 1992
    Assignee: DowElanco
    Inventors: James A. Turner, Paul S. Zorner, Wendy S. Jacks
  • Patent number: 5091580
    Abstract: 2,6-Difluoroaniline is prepared from 1,2,3-trichlorobenzene by partial fluorine exchange to a mixture of 2,6-difluorochlorobenzene and 2,3-difluorochlorobenzene, amination of the chloro substituents, and separation of the desired product from the isomeric 2,3-difluoroaniline. By incorporating a selective reduction into the process immediately after the partial fluorine exchange, the undesirable 2,3-difluorochlorobenzene is converted into valuable ortho-difluorobenzene and the 2,3-difluoroaniline isomer is avoided.
    Type: Grant
    Filed: March 27, 1991
    Date of Patent: February 25, 1992
    Assignee: DowElanco
    Inventors: R. Garth Pews, James A. Gall
  • Patent number: 5089653
    Abstract: Substituted 2-haloanilines are prepared from the correspondingly substituted 2,4-dichloro- or 2,4-dibromoanilines by selectively reducing a chloro or bromo substituent para to a protected amino group in the presence of the same halogen as an ortho substituent. The selective reductions are accomplished by protecting the amino function of the aniline with two protecting groups, e.g., as the diacetanilide or the succinimide.
    Type: Grant
    Filed: April 4, 1991
    Date of Patent: February 18, 1992
    Assignee: Dow Elanco
    Inventors: R. Garth Pews, Richard M. Wehmeyer, James E. Hunter
  • Patent number: 5079238
    Abstract: Insecticide compositions containing an O-halopyridylphosphate insecticide absorbed on corn flour or a mineral carrier are stabilized from thermal decomposition by incorporating from about 1 to about 20 percent by weight of the carrier of a wood flour or a hemicellulose extract. These compositions can be employed in methods for protecting stored grains and plants from insect damage.
    Type: Grant
    Filed: July 17, 1989
    Date of Patent: January 7, 1992
    Assignee: DowElanco
    Inventor: Roy L. Van Horn
  • Patent number: 5068347
    Abstract: 3-Mercapto-5-amino-(1H)-1,2,4-triazole is prepared by the rearrangement of 2,5-diamino-1,3,4-thiadiazole. The rearrangement proceeds in high yields under aqueous alkaline conditions.
    Type: Grant
    Filed: November 23, 1987
    Date of Patent: November 26, 1991
    Assignee: DowElanco
    Inventors: Wallace E. Puckett, R. Garth Pews
  • Patent number: 5068392
    Abstract: 2-Chloro and 2,6-dichloroanilines, optionally substituted in the 3-, 5-, and/or 6-position are prepared from the corresponding anilides by selective bromination, chlorination, reduction and hydrolysis. The selectivity of the process for introducing chlorines ortho to the amino group is very high.
    Type: Grant
    Filed: January 24, 1991
    Date of Patent: November 26, 1991
    Assignee: DowElanco
    Inventors: Lennon H. McKendry, Mark W. Zettler
  • Patent number: 5064956
    Abstract: The invention relates to a novel process to prepare selectively mono-N-alkylated polyazamacrocycles which requires an electrophile with between about one and five equivalents of a suitable macrocycle in a solvent which will not promote a proton transfer.
    Type: Grant
    Filed: July 9, 1990
    Date of Patent: November 12, 1991
    Assignee: The Dow Chemical Company
    Inventor: William J. Kruper, Jr.
  • Patent number: 5061476
    Abstract: Radiolabeled colloid compositions and a method for the preparation of radionuclide-colloid compositions useful in the treatment of rheumatoid arthritis are disclosed. A radionuclide selected from the group consisting of Sm-135, Ho-166, In-155m, Y-90, Gd-159 La-140, Lu-177, or Yb-175 is sorbed to a previously prepared iron-hydroxide colloid. The radiolabeled colloid compositions are comprised of spherical aggregations containing greater than 50% of the radioactive metal in iron-hydroxide particles. The method produces stable radionuclide iron-hydroxide compositions which are useful in therapeutic procedures such as radiation synovectomy.
    Type: Grant
    Filed: December 27, 1989
    Date of Patent: October 29, 1991
    Assignee: The Dow Chemical Company
    Inventors: Jaime Simon, Lance A. Cooper, Kenneth McMillan, David A. Wilson
  • Patent number: 5049675
    Abstract: A solvent-free process for the preparation of herbicidal 2-(4-(pyridinyl-2-oxy)phenoxy)propionate esters is disclosed. The process involves the coupling of a 2-fluoropyridine and an ester of 2-(4-hydroxyphenoxy)propionic acid in the presence of an anhydrous base and in the absence of an added solvent.
    Type: Grant
    Filed: January 29, 1990
    Date of Patent: September 17, 1991
    Assignee: DowElanco
    Inventors: Jim Love, Charles B. Grant, Sterling Gatling
  • Patent number: 5041674
    Abstract: 1-Chloro-3,5-difluorobenzene is chlorinated to give 4,6-difluoro-1,2,3-trichlorobenzene which in turn is nitrated and reduced to the corresponding novel aniline, 2,6-difluoro-3,4,5-trichloroaniline. Further reduction of this aniline provides 2,6-difluoroaniline with high selectivity.
    Type: Grant
    Filed: June 14, 1990
    Date of Patent: August 20, 1991
    Assignee: DowElanco
    Inventors: R. Garth Pews, James A. Gall
  • Patent number: 5034050
    Abstract: Derivatives of 4-((aryloxy)phenoxy)alkenols, their preparation and use as active herbicides for the postemergent control of grassy weeds and especially the control of said weeds in the presence of corn plants are disclosed.
    Type: Grant
    Filed: June 16, 1989
    Date of Patent: July 23, 1991
    Assignee: DowElanco
    Inventors: James A. Turner, Paul S. Zorner, Wendy S. Jacks
  • Patent number: 5032168
    Abstract: Disclosed herein are derivatives of 4-((aryloxy)phenoxy)fluoroalkanoic acid and their use as active herbicides for the pre- and postemergent control of grassy weeds, especially in the presence of broadleaf crops.
    Type: Grant
    Filed: July 10, 1989
    Date of Patent: July 16, 1991
    Assignee: DowElanco
    Inventor: James A. Turner
  • Patent number: 5013352
    Abstract: The present disclosure is directed to substituted cyclohexanedione compounds, the preparation of said compounds, compositions containing said compounds and the use of said compositions in the selective pre- and postemergent kill and control of grassy weeds in the presence of various crop plants.
    Type: Grant
    Filed: March 30, 1990
    Date of Patent: May 7, 1991
    Assignee: DowElanco
    Inventors: Lowell D. Markley, Christopher T. Hamilton, Beth A. Swisher, Jacob Secor
  • Patent number: 5012017
    Abstract: A method for preparing substituted phenoxyphenols which are useful in the preparation of herbicidal (phenoxyphenoxy)propionates is disclosed. The process involves the oxidation of substituted phenoxyphenones to the corresponding phenoxyphenyl esters and their conversion to the desired phenoxyphenol. Novel intermediates for the process are similarly disclosed.
    Type: Grant
    Filed: February 21, 1989
    Date of Patent: April 30, 1991
    Assignee: DowElanco
    Inventors: Jon A. Orvik, Norman R. Pearson, Anthony P. Haag, Timothy J. Adaway, Larry D. Kershner, Andrew S. Kende
  • Patent number: H1265
    Abstract: The present invention is directed to an antimicrobial composition and a method of using said composition, comprising an antimicrobially effective amount of DTEA and an amount of 1-butanol, cyclohexanol, hexyl alcohol, isobutanol, ethylene glycol phenyl ether, propylene glycol phenyl ether, or a mixture thereof effective to result in the antimicrobial composition having a freezing point of less than 0.degree. C. at atmospheric pressure.
    Type: Grant
    Filed: October 21, 1991
    Date of Patent: December 7, 1993
    Assignee: The Dow Chemical Company
    Inventors: Bonnie M. F. Brady, James J. Havel