Patents Represented by Attorney Richard G. Waterman
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Patent number: 5183797Abstract: A process for hydrohalogenating methanol with a hydrogen halide using a catalyst having an initial zone of lower activity and subsequent zones of higher activity so that coke formation and pressure drop are decreased and catalyst life is increased while overall high catalyst activity is maintained. One example of such a process uses a low surface area amorphous alumina in an initial zone and then progressively higher surface area alumina in subsequent zones.Type: GrantFiled: November 7, 1991Date of Patent: February 2, 1993Assignee: The Dow Chemical CompanyInventors: Michael T. Holbrook, Lawrence A. Hebert, Stephen W. Najmy, Ernest F. Stine, Jr., Reimer Hasche
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Patent number: 4962247Abstract: This invention relates to a process for continuously producing halogenated hydrocarbons by: (1) flowing a feed mixture containing CO, H2 and a halogen source into a reaction zone containing a catalyst bed; (2) removing from the reaction zone the resultant reaction product which contains the desired halogenated hydrocarbons; and (3) maintaining the halogen source content in the feed mixture at from about the stoichiometric amount to about twice the stoichiometric amount needed to produce the halogenated hydrocarbons.Type: GrantFiled: January 10, 1989Date of Patent: October 9, 1990Assignee: The Dow Chemical CompanyInventors: Michael T. Holbrook, Timothy Juhlke
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Patent number: 4895635Abstract: A novel electrochemical cell monitoring apparatus for a caustic-chlorine electrolyzer, which includes a voltmeter, a standard calomel reference electrode, a flexible conduit for cell bath, preferably of multilayer construction, and a conduit support body placed between electrode walls to prevent crimping of the conduit when the walls of the electrolyzer are pressed together or dislocation during operation, and the method of monitoring a selected electrochemical cell which includes connecting an electrode of the selected cell and the standard reference electrode to the voltmeter, providing cell bath from the electrode of the selected cell through the conduit to the liquid junction of the standard reference electrode, operating the electrolyzer and reading the voltage on the voltmeter to compare with a predetermined standard voltage.Type: GrantFiled: January 11, 1988Date of Patent: January 23, 1990Assignee: The Dow Chemical CompanyInventors: Stephen A. Noding, John P. McGraw
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Patent number: 4894085Abstract: Novel 2-(4-(2'-fluoro-4'-cyanophenoxy)phenoxy)alkanoic acids and agriculturally acceptable derivatives thereof are selective postemergent herbicides for the control of grassy weeds in valuable crops. The novel herbicides are surprisingly selective, i.e., exhibit little or no phytotoxic effects, to wheat, barley and especially rice at concentrations that control undesired weed grasses.Type: GrantFiled: November 29, 1988Date of Patent: January 16, 1990Assignee: The Dow Chemical CompanyInventors: R. Garth Pews, Lucinda A. Jackson, Chrislyn M. Carson
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Patent number: 4689348Abstract: This invention relates to novel cyanoguanidine compounds and the intermediate N'-cyano-N-(1,2,3,4-tetrahydro-1-naphthyl)-S-methylisothiourea. These novel compounds are useful as animal growth promoting agents.Type: GrantFiled: August 17, 1984Date of Patent: August 25, 1987Assignee: Dow Chemical CompanyInventors: Joseph E. Dunbar, Kimiaki Maruyama
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Patent number: 4609436Abstract: A process for decolorizing polyethylene polyamines using a chlorinated hydrocarbon. The discolored polyethylene polyamine and chlorinated hydrocarbon are contacted to form a decolorizing mixture, and the mixture is distilled. The decolored polyethylene polyamine is collected from the distillate.Type: GrantFiled: January 4, 1985Date of Patent: September 2, 1986Assignee: The Dow Chemical CompanyInventor: Jacobus T. M. Bakkum
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Patent number: 4526981Abstract: 1,3-Dihydro-2H-imidazol-2-ones having 5-acyl and 4-oxymethyl substituents, are useful as cardiotonics, antihypertensives and antithrombotic agents. The compounds are obtained by the reaction of an appropriate alcohol or a silver salt with a substituted 4-bromomethyl-1,3-dihydro-2H-imidazol-2-one.Type: GrantFiled: April 29, 1983Date of Patent: July 2, 1985Assignee: Merrell Dow Pharmaceuticals Inc.Inventors: J. Martin Grisar, Richard A. Schnettler, Richard C. Dage
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Patent number: 4496725Abstract: Substituted 1,2,3-triazino[4',5':4,5]thieno[2,3-b]quinolin-4(3H)-ones useful as antiallergic agents are described herein. The compounds are prepared by the reaction of an appropriate substituted 3-aminothieno[2,3-b]quinoline-2-carboxamide with sodium nitrite in an acid such as acetic acid.Type: GrantFiled: May 23, 1983Date of Patent: January 29, 1985Assignee: The Dow Chemical CompanyInventors: James R. McCarthy, Paul J. Widner
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Patent number: 4496569Abstract: (1H-Tetrazol-5-yl)tetrazolo[1,5-a]quinolines and related compounds which are useful as antiallergic agents are described herein. The compounds are prepared by the reaction of an appropriate halocyanoquinoline or isoquinoline with ammonium chloride and an azide such as sodium azide in an inert solvent such dimethylformamide.Type: GrantFiled: March 25, 1983Date of Patent: January 29, 1985Assignee: The Dow Chemical CompanyInventor: Terry L. Wright
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Patent number: 4487930Abstract: 6-[(Cyclic amino)alkylamino]-7,8,9,10-tetrahydro-1,2,4-triazolo[3,4-a]phthalazines are novel compounds prepared by the reaction of a 6-halo-7,8,9,10-tetrahydro-1,2,4-triazolo[3,4-a]phthalazine with an appropriate (cyclic amino)alkylamine. The compounds are useful as bronchodilators.Type: GrantFiled: September 7, 1982Date of Patent: December 11, 1984Assignee: The Dow Chemical CompanyInventors: Norton P. Peet, Catherine A. Alexander
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Patent number: 4485106Abstract: Substituted tetrahydrotetrazolo[5,1-a]phthalazine compounds such as 6-methylamino-7,8,9,10-tetrahydrotetrazolo[5,1-a]phthalazine are prepared by reacting a 6-halo-7,8,9,10-tetrahydrotetrazolo[5,1-a]phthalazine with an appropriate amine. The compounds are useful as bronchodilators.Type: GrantFiled: July 12, 1982Date of Patent: November 27, 1984Assignee: The Dow Chemical CompanyInventors: Norton P. Peet, Shyam Sunder
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Patent number: 4479001Abstract: Compounds of the formula below, all having trifluoromethyl substitution in at least one of the 3- and the 5-position in the pyridine ring with or without additional substitution at the converse position in the pyridine ring according to the following formula, are useful as herbicidal agents: ##STR1## wherein the substituents are defined hereinbelow.Type: GrantFiled: February 17, 1983Date of Patent: October 23, 1984Assignee: The Dow Chemical CompanyInventors: Howard Johnston, Lillian H. Troxell
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Patent number: 4459302Abstract: New acyl-1H-1,2,4-triazole derivatives of the formula ##STR1## wherein R may be located on one of the two adjacent nitrogen atoms and may represent hydrogen; a group R.sub.5 -CO wherein R.sub.5 is selected from (C.sub.1-4)alkyl, (C.sub.2-4)alkenyl, (C.sub.2-4)alkynyl, phenyl, phenyl substituted by one to three groups independently selected from halo, (C.sub.1-4)alkyl, (C.sub.1-4)alkoxy, trifluoromethyl, cyano, nitro, amino, di-(C.sub.1-4)alkylamino, (C.sub.2-4)acylamino and methylenedioxy, benzyl, cinnamyl, amino, (C.sub.1-4)alkylamino, di-(C.sub.1 -C.sub.4)alkylamino, phenylamino, phenylamino wherein the phenyl ring may be substituted by one to three groups independently selected from halo, (C.sub.1-4)alkyl, (C.sub.1-4)alkoxy, trifluoromethyl, cyano, nitro, amino, di-(C.sub.1-4)alkylamino, (C.sub.2-4)acylamino and methylenedioxy, halo(C.sub.1-4)alkyl, (C.sub.1-4)alkoxy and benzyloxy;a group R.sub.6 -SO.sub.2 wherein R.sub.6 may represent (C.sub.Type: GrantFiled: October 23, 1979Date of Patent: July 10, 1984Assignee: Gruppo Lepetit, S.p.A.Inventors: Amedeo Omodei-Sale, Pietro Consonni, Giulio Galliani
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Patent number: 4419357Abstract: 3-(1H-tetrazol-5-yl)-4(3H)-quinazolinones useful as antiallergic agents are described herein. The compounds are prepared by the reaction of an appropriate 2-amino-N-(1H-tetrazol-5-yl)benzamide with an appropriate ortho ester.Type: GrantFiled: January 18, 1982Date of Patent: December 6, 1983Assignee: The Dow Chemical CompanyInventors: Norton P. Peet, Shyam Sunder
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Patent number: 4141916Abstract: Compounds are prepared corresponding to the formula ##STR1## WHEREIN EACH R represents alkyl of 1 to 4 carbon atoms. These compounds can be employed as starting materials for preparing 3,4,5-trichloro-N,N-di(loweralkyl)-2-(thiomethylthiocyanato)benzenesulfona mides which are useful as antimicrobial agents.Type: GrantFiled: February 13, 1978Date of Patent: February 27, 1979Assignee: The Dow Chemical CompanyInventors: Christian T. Goralski, George A. Burk
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Patent number: H239Abstract: A hydronic heating system that includes a tube or series of tubes placed on modular composite panels. The panels are fabricated with a grooved surface to permit the flush embedment of the tubes on the panels.Type: GrantFiled: March 3, 1986Date of Patent: March 3, 1987Assignee: The Dow Chemical CompanyInventors: Kenneth Franklin, John W. Hipple
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Patent number: H631Abstract: An apparatus for forming a cable. The cable generally comprises a core sheathed with a metal tape. A plastic jacket, e.g., polyethylene, is extruded over the sheath. The apparatus includes a self-tracking edge forming apparatus which bends the longitudinal edges of the tape. When the tape is overlapped over the core, the bent edges provide intimate control in the overlap area to promote proper sealing to eliminate failure of the cable jacket through a "zippering" effect. The edge forming apparatus may comprise a movable and a fixed forming roller, one of the forming rollers having a surface with flanged ends and the other surface having a surface that facially conforms to the curvatures of the flanged roller, and adjusting means to move the first roller relative to the second roller. The edge forming apparatus is self-tracking because it is mounted on a base comprising apparatus to movably adjust the edge forming apparatus in relation to lateral movement of the metal tape as it is pulled along the tape path.Type: GrantFiled: July 30, 1987Date of Patent: May 2, 1989Inventors: Mamdouh S. Hamad, Daniel G. Pikula
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Patent number: H1053Abstract: A method of making a new food product which comprises carboxymethylcellulose, a gelling binder, food particles and typically other batter-like ingredients. The method comprises mixing carboxymethylcellulose, a gelling binder and the batter-like ingredients to form a food matrix, which is admixed with food particles and water to form a food mash. This food mash is extruded into a desirous shape and is contacted with an aluminum solution. Further processing the food product can be done by battering, or breading and the like. The food product does not have a gel-like coating encasing it, so it has very appealing textural characteristics. Additional advantages are that carboxymethylcellulose is readily available, is not temperature sensitive and is not expensive.Type: GrantFiled: February 26, 1990Date of Patent: May 5, 1992Assignee: The Dow Chemical CompanyInventors: Donald G. Coffey, Donald A. Rebstock, Wilfred C. Meyer
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Patent number: H1265Abstract: 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: GrantFiled: October 21, 1991Date of Patent: December 7, 1993Assignee: The Dow Chemical CompanyInventors: Bonnie M. F. Brady, James J. Havel
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Patent number: H1439Abstract: The performance of epoxy resins in several end-uses is enhanced by the presence of small quantities of hydrolyzed resin terminated by .alpha.-glycol groups. The invention is a process in which a mixture that contains liquid epoxy resin and water is reacted at elevated temperatures in order to hydrolyze epoxy groups into .alpha.-glycol groups, characterized in that: (1) the reaction temperature is between 130.degree. C. and 200.degree. C; (2) the reaction mixture contains 0.5 and 10 parts water per 100 parts resin by weight; and (3) the mixture contains 0 to 1 weight percent organic solvents and 0 to 100 ppm each of: organic acids, organic diacids, phosphonium compounds, and alkali or alkaline earth metals and their salts. The process raises the level of .alpha.-glycol groups in the resin, but uses no solvents or catalysts, so that it is easy to clean up the resulting resin.Type: GrantFiled: October 18, 1993Date of Patent: May 2, 1995Assignee: The Dow Chemical CompanyInventor: Thomas J. Hairston