Patents by Inventor Vijay S. Bhise
Vijay S. Bhise 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).
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Patent number: 8378129Abstract: The invention relates to an improved process for producing a catalyst useful for the epoxidation of ethylene to ethylene oxide. In forming the catalyst, a silver-impregnated support is subjected to two calcinations. The support is subjected to a first calcination in a first atmosphere comprising air. Next the support is subjected to a second calcination in a second atmosphere which is substantially entirely comprised of inert gas, and which second atmosphere is substantially absent of hydrogen. This two-stage calcination produces an improved catalyst which contains fewer organics left over under standard conditions of air calcination alone, while costing less than calcination in an inert gas alone.Type: GrantFiled: October 25, 2011Date of Patent: February 19, 2013Assignee: SD Lizenzverwertungsgesellschaft mbH & Co. KGInventors: Vijay S. Bhise, Arie Bortinger, Stephen R. Allen
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Publication number: 20120041217Abstract: The invention relates to an improved process for producing a catalyst useful for the epoxidation of ethylene to ethylene oxide. In forming the catalyst, a silver-impregnated support is subjected to two calcinations. The support is subjected to a first calcination in a first atmosphere comprising air. Next the support is subjected to a second calcination in a second atmosphere which is substantially entirely comprised of inert gas, and which second atmosphere is substantially absent of hydrogen. This two-stage calcination produces an improved catalyst which contains fewer organics left over under standard conditions of air calcination alone, while costing less than calcination in an inert gas alone.Type: ApplicationFiled: October 25, 2011Publication date: February 16, 2012Applicant: SD Lizenzverwertungsgesellschaft mbH & Co. KGInventors: Vijay S. Bhise, Arie Bortinger, Stephen R. Allen
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Patent number: 8097557Abstract: The invention relates to an improved process for producing a catalyst useful for the epoxidation of ethylene to ethylene oxide. In forming the catalyst, a silver-impregnated support is subjected to two calcinations. The support is subjected to a first calcination in a first atmosphere comprising air. Next the support is subjected to a second calcination in a second atmosphere which is substantially entirely comprised of inert gas, and which second atmosphere is substantially absent of hydrogen. This two-stage calcination produces an improved catalyst which contains fewer organics left over under standard conditions of air calcination alone, while costing less than calcination in an inert gas alone.Type: GrantFiled: August 8, 2006Date of Patent: January 17, 2012Assignee: SD Lizenverwertungsgesellschaft mbH & Co. KGInventors: Vijay S. Bhise, Arie Bortinger, Stephen R. Allen
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Publication number: 20080039316Abstract: The invention relates to an improved process for producing a catalyst useful for the epoxidation of ethylene to ethylene oxide. In forming the catalyst, a silver-impregnated support is subjected to two calcinations. The support is subjected to a first calcination in a first atmosphere comprising air. Next the support is subjected to a second calcination in a second atmosphere which is substantially entirely comprised of inert gas, and which second atmosphere is substantially absent of hydrogen. This two-stage calcination produces an improved catalyst which contains fewer organics left over under standard conditions of air calcination alone, while costing less than calcination in an inert gas alone.Type: ApplicationFiled: August 8, 2006Publication date: February 14, 2008Inventors: Vijay S. Bhise, Arie Bortinger, Stephen R. Allen
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Patent number: 6939979Abstract: Ethylene is oxidized by contact at oxidizing conditions with an admixture of a solid particulate catalyst and a solid particulate alkali metal treated inert.Type: GrantFiled: November 10, 2003Date of Patent: September 6, 2005Assignee: Scientific Design Co., Inc.Inventors: Nabil Rizkalla, Vijay S. Bhise
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Patent number: 4508927Abstract: A process for preparation of glycols in which the vapor remaining after the partial condensation of a conventional ethylene oxide stripper overhead vapor stream is contacted with an aqueous solution of ethylene carbonate to recover ethylene oxide. No water need be removed from the enriched ethylene carbonate stream. Carbon dioxide is added and ethylene carbonate is formed by reaction at about 50.degree. to 200.degree. C. and 5 to 150 kg/cm.sup.2 gauge in the presence of a suitable catalyst, preferably about 0.5-20 wt % of an organic phosphonium halide. After stripping off unreacted components, the ethylene carbonate is hydrolyzed to glycols in the presence of the same carbonation catalyst and at temperatures in the range of about 100.degree. to 200.degree. C. and pressures of about 5 to 150 kg/cm.sup.2 gauge. Optionally, ethylene oxide and ethylene carbonate may be co-produced.Type: GrantFiled: August 2, 1983Date of Patent: April 2, 1985Assignee: The Halcon SD Group, Inc.Inventors: Vijay S. Bhise, Harold Gilman
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Patent number: 4437939Abstract: Ethylene oxide is extracted from aqueous solutions by carbon dioxide under (near) super-critical conditions and thereafter recovered by distillation at sub-critical conditions. Improved distillation is obtained by adding to the carbon dixoide a gas (or gases) which adjust the critical temperature of the gas mixture of the top of the distillation column within the range of about 32.degree. C. to about 75.degree. C. Preferred gases are the saturated hydrocarbons, particularly propane, n-butane, isobutane and pentane.Type: GrantFiled: November 16, 1981Date of Patent: March 20, 1984Assignee: The Halcon SD Group, Inc.Inventors: Vijay S. Bhise, Robert Hoch
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Patent number: 4437938Abstract: Ethylene oxide is recovered from aqueous solutions by extracting with carbon dioxide in the near-critical or super-critical state, thereby selectively removing the ethylene oxide from water, and thereafter recovering ethylene oxide from the carbon dioxide by distillation or other suitable means.Type: GrantFiled: July 17, 1981Date of Patent: March 20, 1984Assignee: The Halcon SD Group, Inc.Inventors: Vijay S. Bhise, Robert Hoch
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Patent number: 4400559Abstract: Ethylene glycol is prepared by a process in which ethylene oxide is extracted from an aqueous solution with near-critical or super-critical carbon dioxide. Thereafter an ethylene oxide--carbon dioxide--water mixture is contacted with a catalyst to form ethylene carbonate, which is then hydrolyzed to ethylene glycol in the presence of the same catalyst. The ethylene glycol is separated as product and the carbon dioxide and the catalyst are recycled.Type: GrantFiled: June 14, 1982Date of Patent: August 23, 1983Assignee: The Halcon SD Group, Inc.Inventor: Vijay S. Bhise
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Patent number: 4358411Abstract: Carbonylation products such as alkanoic anhydrides, e.g., acetic anhydrides, are produced by carbonylation of esters and/or ethers in the presence of a rhodium or iridium catalyst and an iodine moiety in a reaction zone wherein the reaction mixture is in a continuous boiling state.Type: GrantFiled: June 29, 1979Date of Patent: November 9, 1982Assignee: The Halcon SD Group, Inc.Inventors: Richard V. Porcelli, Vijay S. Bhise
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Patent number: 4252741Abstract: In the carbonylation of alkyl esters in the presence of a Group VIII noble metal catalyst to produce a reaction mixture comprising volatile components and the non-volatile Group VIII noble metal catalyst, and the volatile components are separated from the catalyst, catalyst activity is maintained by providing a partial pressure of hydrogen of at least 10 psi during the separation of the volatile products. A partial pressure of at least 15 psi of carbon monoxide is also preferably provided, particularly when a metal promoter for the Group VIII noble metal catalyst is present, during such separation.Type: GrantFiled: October 6, 1978Date of Patent: February 24, 1981Assignee: Halcon Research & Development Corp.Inventors: Richard V. Porcelli, Vijay S. Bhise, Arnold J. Shapiro