Patents by Inventor Valerie A. Bell

Valerie A. Bell 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).

  • Publication number: 20070243129
    Abstract: The effective pore diameter of ETS-4 can be controlled without thermal treatment by selecting various combinations of cations to exchange into ETS-4. The effect that any cation mixture has on the ETS-4 can be reduced to the weighted average of the effects of each cation present.
    Type: Application
    Filed: March 16, 2006
    Publication date: October 18, 2007
    Inventors: Valerie Bell, Dennis Ray Anderson, Barry Speronello, Mukta Rai, William Dolan
  • Patent number: 6685910
    Abstract: Novel morphologies are provided for aluminosilicate zeolite ion-exchange materials useful for static water softening. The zeolites are provided in the form of large aggregates composed of submicron zeolite crystals. Rapid exchange rates, high hardness ion capacity and increased attrition resistance characterize the zeolite ion exchangers.
    Type: Grant
    Filed: December 14, 2000
    Date of Patent: February 3, 2004
    Assignee: Engelhard Corporation
    Inventors: Steven M. Kuznicki, Tadeusz W. Langner, Jacqueline S. Curran, Valerie A. Bell
  • Patent number: 6572776
    Abstract: A method of water softening utilizes macrocrystalline aggregates consisting essentially of submicron crystals of aluminosilicate zeolite. The aggregates have a size of greater than 5 microns and are used in a static bed water softening device. Both regenerable and disposable water softening materials can be provided.
    Type: Grant
    Filed: December 14, 2000
    Date of Patent: June 3, 2003
    Assignee: Engelhard Corporation
    Inventors: Steven M. Kuznicki, Valerie A. Bell, Tadeusz W. Langner, Jacqueline S. Curran
  • Patent number: 6517611
    Abstract: Separation of ethylene from ethane is achieved by feeding a mixture of the C2 hydrocarbons in contact with a CTS-1 crystalline titanium silicate molecular sieve which has a controlled pore size to selectively adsorb ethylene and size exclude ethane. The feed stream can also contain acetylene which can be selectively adsorbed from both ethane and ethylene by further controlling the pore size of the CTS-1 molecular sieve. Propane/propylene separation is also disclosed.
    Type: Grant
    Filed: July 23, 2001
    Date of Patent: February 11, 2003
    Assignee: Engelhard Corporation
    Inventors: Steven M. Kuznicki, Valerie A. Bell
  • Publication number: 20020198131
    Abstract: This invention relates to zeolitic molecular sieve compositions and hybrid zeolite-silica compositions characterized by novel morphology in which the zeolite is present as macroscopic aggregates of microcrystalline zeolite. The zeolitic compositions of this invention have outstanding capability to complex multivalent cations, especially calcium due to the high exchange kinetics of the microcrystalline zeolite component and yet have the ease of handling due to the macroscopic aggregate assemblage.
    Type: Application
    Filed: July 18, 2002
    Publication date: December 26, 2002
    Inventors: Steven M. Kuznicki, Tadeusz W. Langner, Jacqueline S. Curran, Valerie A. Bell
  • Patent number: 6451283
    Abstract: This invention relates to zeolitic molecular sieve compositions and hybrid zeolite-silica compositions characterized by novel morphology in which the zeolite is present as macroscopic aggregates of microcrystalline zeolite. The zeolitic compositions of this invention have outstanding capability to complex multivalent cations, especially calcium due to the high exchange kinetics of the microcrystalline zeolite component and yet have the ease of handling due to the macroscopic aggregate assemblage.
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: September 17, 2002
    Assignee: Engelhard Corporation
    Inventors: Steven M. Kuznicki, Tadeusz W. Langner, Jacqueline S. Curran, Valerie A. Bell
  • Patent number: 6416732
    Abstract: Aluminosilicate zeolites are formed in a novel reaction medium which contains a silicate source and an aluminum source in an aqueous alkaline solution and which reaction medium further includes an additional electrolyte salt. The addition of the electrolyte salt provides nucleation sites for the zeolite so as to form very small crystals. In high silica reaction environments, it is possible to form high aluminum zeolites which contain occluded silicate and wherein the morphology of the zeolites comprise macroscopic aggregates of microcrystalline zeolites. The addition of the electrolyte salt can also decrease the reaction time or temperature needed for crystallization.
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: July 9, 2002
    Assignee: Engelhard Corporation
    Inventors: Jacqueline S. Curran, Valerie A. Bell, Steven M. Kuznicki, Tadeusz W. Langner
  • Patent number: 6413492
    Abstract: The present invention relates to a method of forming an aluminosilicate zeolite having a Si/Al≦1.1. The method comprises forming a reaction mixture by mixing a source of silica, and a source of aluminum in an aqueous alkaline solution having a pH of at least 12.0, wherein the Si/Al of said mixture is greater than 1.0.
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: July 2, 2002
    Assignee: Engelhard Corporation
    Inventors: Steven M. Kuznicki, Tadeusz W. Langner, Jacqueline S. Curran, Valerie A. Bell
  • Publication number: 20020074291
    Abstract: A method of water softening utilizes macrocrystalline aggregates consisting essentially of submicron crystals of aluminosilicate zeolite. The aggregates have a size of greater than 5 microns and are used in a static bed water softening device. Both regenerable and disposable water softening materials can be provided.
    Type: Application
    Filed: December 14, 2000
    Publication date: June 20, 2002
    Inventors: Steven M. Kuznicki, Valerie A. Bell, Tadeusz W. Langner, Jacqueline S. Curran
  • Publication number: 20020077245
    Abstract: Novel morphologies are provided for aluminosilicate zeolite ion-exchange materials useful for static water softening. The zeolites are provided in the form of large aggregates composed of submicron zeolite crystals. Rapid exchange rates, high hardness ion capacity and increased attrition resistance characterize the zeolite ion exchangers.
    Type: Application
    Filed: December 14, 2000
    Publication date: June 20, 2002
    Inventors: Steven M. Kuznicki, Tadeusz W. Langner, Jacqueline S. Curran, Valerie A. Bell
  • Publication number: 20020074293
    Abstract: A novel water softening material comprising a porous matrix such as carbon or paper having incorporated in the pores thereof an ion-exchanger composition comprising either a hybrid zeolite-silicate powder in which the zeolite contains occluded silicate which is not part of the zeolite framework or the ion-exchanger includes macroscopic aggregates of submicron aluminosilicate zeolite crystals. The submicron zeolite crystals of the aggregate can include occluded silicate. The water softening materials are particularly useful in static water softening including, for example, treating household water supplies.
    Type: Application
    Filed: December 14, 2000
    Publication date: June 20, 2002
    Inventors: Steven M. Kuznicki, Valerie A. Bell, Tadeusz W. Langner, Jacqueline S. Curran
  • Patent number: 6395067
    Abstract: Porous titanium silicate molecular sieves are produced in the form of a membrane capable of separating fluid molecular mixtures.
    Type: Grant
    Filed: September 15, 2000
    Date of Patent: May 28, 2002
    Assignee: Engelhard Corporation
    Inventors: Steven M. Kuznicki, Valerie A. Bell, Richard M. Jacubinas
  • Patent number: 6379436
    Abstract: Sodalite is treated with acid to transform the surface to provide a highly macroporous material that demonstrates water swing capacities exceeding those of high performance, low temperature desiccants under high latent load at relatively high ambient temperature and humidities.
    Type: Grant
    Filed: April 12, 2000
    Date of Patent: April 30, 2002
    Assignee: Engelhard Corporation
    Inventors: Steven M. Kuznicki, Tadeusz W. Langner, Jacqueline S. Curran, Valerie A. Bell
  • Patent number: 6340433
    Abstract: Aqueous streams containing organic and/or inorganic contaminants are purified by the removal of the contaminant by contacting the aqueous stream with a membrane formed from a porous, crystalline titanium silicate.
    Type: Grant
    Filed: September 15, 2000
    Date of Patent: January 22, 2002
    Assignee: Engelhard Corporation
    Inventors: Steven M. Kuznicki, Richard M. Jacubinas, Jacqueline S. Curran, Valerie A. Bell
  • Patent number: 6068682
    Abstract: Novel gas separation agents with precisely and predictably controlled pore sizes within the range of 3-4 Angstrom units and their preparation from ETS-4 by exchange with cations, particularly multivalent cations such as strontium followed by drying and calcination to effect controlled pore shrinkage is disclosed. These novel materials have utility in gas separation processes particularly the separation of nitrogen from a mixture of the same with methane.
    Type: Grant
    Filed: December 11, 1998
    Date of Patent: May 30, 2000
    Assignee: Engelhard Corporation
    Inventors: Steven M. Kuznicki, Valerie A. Bell, Ivan Petrovic, Bipin T. Desai
  • Patent number: 5989316
    Abstract: Barium-exchanged ETS-4 shows particular utility in gas separation processes involving the separation of nitrogen from a mixture of the same with methane.
    Type: Grant
    Filed: December 22, 1997
    Date of Patent: November 23, 1999
    Assignee: Engelhard Corporation
    Inventors: Steven M. Kuznicki, Valerie A. Bell, Ivan Petrovic, Patrick W. Blosser
  • Patent number: 5948383
    Abstract: This invention relates to zeolitic molecular sieve compositions characterized by outstanding capability to complex multivalent cations, especially calcium. In particular, the invention relates to novel zeolitic molecular sieve compositions, especially those based on molecular sieves having a high alumina-to-silica ratio, in which crystals of the zeolite are modified by the inclusion of occluded silicate.
    Type: Grant
    Filed: February 25, 1998
    Date of Patent: September 7, 1999
    Assignee: Engelhard Corporation
    Inventors: Steven M. Kuznicki, Tadeusz W. Langner, Jacqueline S. Curran, Valerie A. Bell