Patents by Inventor John D. Sherman

John D. Sherman has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for the preparation of high-level ion-exchanged zeolites
    Patent number: 4666693
    Abstract: A process is provided for achieving a high degree of exchange for zeolites, e.g., Zeolites F and W. After preparation of the ammonium form, the zeolite is contacted with a solution containing the desired metal cation while simultaneously maintaining the pH at between about 9.0 and 12.0 to provide a final product zeolite wherein the desired metal cation will correspond to at least about 0.5 of the total zeolitic cations.
    Type: Grant
    Filed: November 25, 1985
    Date of Patent: May 19, 1987
    Assignee: Union Carbide Corporation
    Inventors: Ronald J. Ross, John D. Sherman
  • Drying process using chabazite-type adsorbents
    Patent number: 4663052
    Abstract: A process for the removal of water and other polar compounds from an acidic stream containing water and at least one acid compound comprising contacting the acidic stream with an adsorbent comprising a chabazite-type zeolite wherein said adsorbent has a M.sub.2 O/Al.sub.2 O.sub.3 mole oxide ratio of at least 0.5 where "M" is at least one cation selected from the group consisting of potassium, rubidium and cesium.
    Type: Grant
    Filed: December 12, 1985
    Date of Patent: May 5, 1987
    Assignee: Union Carbide Corporation
    Inventors: John D. Sherman, Moez M. Nagji, Ronald J. Ross, Joseph P. Ausikaitis, Desh R. Garg
  • Separation of arabinose by selective adsorption on zeolitic molecular sieves
    Patent number: 4591388
    Abstract: A process for the separation of arabinose is disclosed which comprises the selective adsorption of same on BaX zeolitic molecular sieves. The process is especially useful for separating arabinose from mixtures of sugars containing arabinose.
    Type: Grant
    Filed: May 6, 1985
    Date of Patent: May 27, 1986
    Assignee: Union Carbide Corporation
    Inventors: Chien C. Chao, John D. Sherman
  • Process for the preparation of high-level ion-exchanged forms of Zeolites F and Zeolite W
    Patent number: 4556550
    Abstract: A process is provided for achieving a high degree of exchange for zeolites, e.g., Zeolites F and W. After preparation of the ammonium form, the zeolite is contacted with a solution containing the desired metal cation while simultaneously maintaining the pH at between about 9.0 and 12.0 to provide a final product zeolite wherein the desired metal cation will correspond to at least about 0.5 of the total zeolitic cations.
    Type: Grant
    Filed: October 19, 1983
    Date of Patent: December 3, 1985
    Assignee: Union Carbide Corporation
    Inventors: Ronald J. Ross, John D. Sherman
  • Bulk separation of sorbitol by selective adsorption on zeolitic molecular sieves
    Patent number: 4544778
    Abstract: A process for the bulk separation of sorbitol from a solution of a carbohydrate mixture by selective adsorption on a zeolite molecular sieve having a faujasite type structure and having predominantly Ca.sup.++ cations in association with the AlO.sub.2.sup.- tetrahedra thereof.
    Type: Grant
    Filed: August 29, 1984
    Date of Patent: October 1, 1985
    Assignee: Union Carbide Corporation
    Inventors: Chien C. Chao, John D. Sherman
  • Separation of arabinose by selective adsorption on zeolitic molecular sieves
    Patent number: 4516566
    Abstract: A process for the separation of arabinose is disclosed which comprises the selective adsorption of same on BaX zeolitic molecular sieves. The process is especially useful for separating arabinose from mixtures of sugars containing arabinose.
    Type: Grant
    Filed: December 30, 1982
    Date of Patent: May 14, 1985
    Assignee: Union Carbide Corporation
    Inventors: Chien C. Chao, John D. Sherman
  • Bulk separation of inositol and sorbitol by selective adsorption on zeolitic molecular sieves
    Patent number: 4482761
    Abstract: A process for the bulk separation of inositol and/or sorbitol is disclosed which comprises the selective adsorption of same on certain types of zeolitic molecular sieves. The process is especially useful for separating inositol from aqueous solutions containing same, using type X and type Y zeolite adsorbents whose cations are Na, Ca or Ba.
    Type: Grant
    Filed: January 12, 1983
    Date of Patent: November 13, 1984
    Assignee: Union Carbide Corporation
    Inventors: Chien C. Chao, John D. Sherman
  • Separation of mannose by selective adsorption on zeolitic molecular sieves
    Patent number: 4471114
    Abstract: A process for the separation of mannose is disclosed which comprises the selective adsorption of same on certain types of zeolitic molecular sieves. The process is especially useful for separating mannose from glucose epimerization product or plant tissue hydrolyzate, using zeolites selected from the group consisting of BaX, BaY, SrY, NaY and CaY.
    Type: Grant
    Filed: December 30, 1982
    Date of Patent: September 11, 1984
    Assignee: Union Carbide Corporation
    Inventors: John D. Sherman, Chien C. Chao
  • Bulk separation of polyhydric alcohols by selective adsorption on zeolitic molecular sieves
    Patent number: 4456774
    Abstract: Mannitol is separated from admixture with galactitol and/or from sorbitol by selective adsorption on cationic forms of zeolite X and zeolite Y.
    Type: Grant
    Filed: October 13, 1983
    Date of Patent: June 26, 1984
    Assignee: Union Carbide Corporation
    Inventors: John D. Sherman, Chien C. Chao
  • Bulk lactulose/lactose separation by selective adsorption on zeolitic molecular sieves
    Patent number: 4394178
    Abstract: Lactulose is selectively adsorbed from admixture with lactose using specific cationic forms (particularly barium or potassium) of modified zeolite Y.
    Type: Grant
    Filed: December 10, 1981
    Date of Patent: July 19, 1983
    Assignee: Union Carbide Corporation
    Inventors: Chien C. Chao, John D. Sherman
  • Phillipsite-type zeolites for ammonia adsorption
    Patent number: 4344851
    Abstract: Ammonium ions are selectively removed from aqueous solutions containing calcium cations by cation exchange with natural or synthetic zeolites of the phillipsitegismondite type, which possess unusual capacity and selectivity for the ammonium ion.
    Type: Grant
    Filed: January 16, 1981
    Date of Patent: August 17, 1982
    Assignee: Union Carbide Corporation
    Inventors: John D. Sherman, Ronald J. Ross
  • Suppression of COS formation in molecular sieve purification of hydrocarbon gas streams
    Patent number: 4329160
    Abstract: In the process for purifying hydrocarbon gas streams containing hydrogen sulfide and carbon dioxide as impurities by contact thereof with zeolitic molecular sieve adsorbents to selectively adsorb the impurities, the formation of carbonyl sulfide by the zeolite catalyzed reaction of H.sub.2 S with CO.sub.2 is greatly suppressed by employing as the selective adsorbent certain cation forms of molecular sieve zeolites which contain from 0.7 to 3 weight percent adsorbed water.
    Type: Grant
    Filed: August 22, 1978
    Date of Patent: May 11, 1982
    Assignee: Union Carbide Corporation
    Inventors: John D. Sherman, Arthur T. Katsaros
  • Bulk cyclohexanol/cyclohexanone separation by selective adsorption on zeolitic molecular sieves
    Patent number: 4283560
    Abstract: Cyclohexanone is selectively adsorbed from admixture with cyclohexanol using specific cationic forms of zeolite X and zeolite Y. The process utilizes the interaction of the electrostatic field of the zeolite with the slightly greater polarity of the cyclohexanone to enhance the adsorptive strength difference between the competing adsorbates.
    Type: Grant
    Filed: November 30, 1979
    Date of Patent: August 11, 1981
    Assignee: Union Carbide Corporation
    Inventors: Chien C. Chao, John D. Sherman
  • Process for preparing zeolite-containing detergent agglomerates
    Patent number: 4261941
    Abstract: Zeolite-containing agglomerates which rapidly disperse in water are prepared by admixing molten polyethylene glycol with a hot aqueous solution of alkylbenzene sulfonate, blending the resulting mixture with hydrated zeolite A crystals and thereafter drying and comminuting the blend.
    Type: Grant
    Filed: June 26, 1979
    Date of Patent: April 14, 1981
    Assignee: Union Carbide Corporation
    Inventors: John D. Sherman, Arthur F. Denny
  • Zeolite agglomerates for detergent formulations
    Patent number: 4231887
    Abstract: Zeolite agglomerates which when admixed with conventional laundry detergent formulations remain uniformly distributed and upon contact with hard water rapidly disperse and sequester the hardness cations thereof are comprised of zeolite crystals in a matrix of an ethoxylated linear alcohol and sodium citrate.
    Type: Grant
    Filed: June 26, 1979
    Date of Patent: November 4, 1980
    Assignee: Union Carbide Corporation
    Inventors: Arthur F. Denny, John D. Sherman
  • Process for carbonation of an aqueous medium
    Patent number: 4199607
    Abstract: Carbonation of an aqueous medium by using zeolite agglomerates in which the distribution of capillary pores is modified to enhance the number of pores in the diameter range of from 2 to 100 microns, thereby improving its ability to release adsorbed CO.sub.2 into liquid media in a manner which favors both a high rate of desorption and a high degree of solubility of the desorbate gases in the liquid media.
    Type: Grant
    Filed: July 17, 1978
    Date of Patent: April 22, 1980
    Assignee: Union Carbide Corporation
    Inventors: John D. Sherman, Jay R. Ronald
  • Zeolite agglomerates having controlled pore structure
    Patent number: 4123390
    Abstract: Zeolite agglomerates in which the distribution of capillary pores is modified to enhance the number of pores in the diameter range of from 2 to 100 microns are found to have a greatly improved ability to release adsorbed CO.sub.2 into liquid media in a manner which favors both a high rate of desorption and a high degree of solubility of the desorbate gases in the liquid media. The agglomerates are particularly useful for the carbonation of an aqueous medium.
    Type: Grant
    Filed: November 15, 1976
    Date of Patent: October 31, 1978
    Assignee: Union Carbide Corporation
    Inventors: John D. Sherman, Ronald J. Ross