Patents by Inventor James R. Fehlner

James R. Fehlner 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).

  • Patent number: 5779904
    Abstract: Inorganic membranes such as zeolite membranes or other molecular sieve membranes can be provided by using silicone polymer material as starting material. A thin film zeolite membrane or a thin film membrane formed of interlocking zeolite crystals can be provided. Water soluble or water insoluble silicones can be treated in a basic solution under conditions and with an appropriate structure directing template, suitable aluminum content and at a temperature that is appropriate for growing a desired inorganic crystal framework. The membranes can be formed across the perforation of a support, such as a steel screen.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: July 14, 1998
    Assignee: Inrad
    Inventors: Warren Ruderman, James R. Fehlner, Zhenyu Zhang
  • Patent number: 5712461
    Abstract: Methods for forming membranes of semiconductive material incorporating molecular sieve material therein can involve sol gel techniques and suction techniques. The semiconductors, such as metal oxides, sulfides or carbides have photoactivity and are useful in photocatalytic reactions. An example of such a membrane is titanium oxide including zeolite molecular sieve incorporated therein. The membranes can be used to perform useful chemical reactions such as the mineralization of organic chemicals in the presence of light. For example, many toxic organic chemicals can be converted to useful or benign products by contacting those chemicals with active metal oxide-molecular sieve membranes in accordance with the invention and illuminating the membranes with light of a suitable wavelength.
    Type: Grant
    Filed: November 17, 1995
    Date of Patent: January 27, 1998
    Assignee: Inrad
    Inventors: Zhenyu Zhang, James R. Fehlner
  • Patent number: 5618435
    Abstract: Inorganic membranes such as zeolite membranes or other molecular sieve membranes can be provided by using siliconee, polymer material as starting material. A thin film zeolite membrane or a thin film membrane formed of interlocking zeolite crystals can be provided. Water soluble or water insoluble silicones can be treated in a basic solution under conditions and with an appropriate structure directing template, suitable aluminum content and at a temperature that is appropriate for growing a desired inorganic crystal framework. Heteroatoms can be included in the crystalline framework.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: April 8, 1997
    Assignee: Inrad
    Inventors: James R. Fehlner, Zhenyu Zhang
  • Patent number: 5543016
    Abstract: The photoconversion of steroids is carried out in microreactors to yield desired products, while limiting the formation of undesirable byproducts. The steroid reactant is combined with a microreactor such as solid particles having controlled spaces of appropriate size to provide stereochemical control over the reaction. Appropriate catalyst particles include silica and zeolitic material. The reaction can be conducted in a fluidized bed reactor and the formation of undesirable byproducts can be effectively limited.
    Type: Grant
    Filed: May 18, 1992
    Date of Patent: August 6, 1996
    Assignee: Inrad
    Inventors: James R. Fehlner, Dow Firnberg
  • Patent number: 5474681
    Abstract: Inorganic membranes such as zeolite membranes or other molecular sieve membranes can be provided by using silicone polymer material as starting material. A thin film zeolite membrane or a thin film membrane formed of interlocking zeolite crystals can be provided. Water soluble or water insoluble silicones can be treated in a basic solution under conditions and with an appropriate structure directing template, suitable aluminum content and at a temperature that is appropriate for growing a desired inorganic crystal framework. The continuous thin film membranes or interlocking crystal membranes can be formed on the sides of a reaction vessel, on the surface of the solution or on the surfaces of substrates introduced into the vessel.
    Type: Grant
    Filed: March 31, 1992
    Date of Patent: December 12, 1995
    Assignee: Inrad
    Inventors: James R. Fehlner, Warren Ruderman, Zhenyu Zhang
  • Patent number: 5468699
    Abstract: Methods for forming membranes of semiconductive material incorporating molecular sieve material therein can involve sol gel techniques and suction techniques. The semiconductors, such as metal oxides, sulfides or carbides have photoactivity and are useful in photocatalytic reactions. An example of such a membrane is titanium oxide including zeolite molecular sieve incorporated therein. The membranes can be used to perform useful chemical reactions such as the mineralization of organic chemicals in the presence of light. For example, many toxic organic chemicals can be converted to useful or benign products by contacting those chemicals with active metal oxide-molecular sieve membranes in accordance with the invention and illuminating the membranes with light of a suitable wavelength.
    Type: Grant
    Filed: July 30, 1992
    Date of Patent: November 21, 1995
    Assignee: Inrad
    Inventors: Zhenyu Zhang, James R. Fehlner
  • Patent number: 5374405
    Abstract: A rotating fluidized bed reactor in which inert solid particles are held in place by centrifugal forces. The reactor includes a rotating porous bed vessel drum within a plenum vessel and the drum rotates to hold the solid particles at the side thereof. Gas is introduced through the walls of the drum and can be drawn off at the top. An electromagnetic radiation source can be included within the drum for promoting photochemical reactions. The solid particles can be inert particles that are loaded with reactant which reacts with the gas stream and/or from the electromagnetic radiation. In other embodiments of the invention, the particles do not contain reactant and reactant is provided within the gas stream only. Such a rotating bed reactor is suitable for use with both batch and continuous flow through processes.
    Type: Grant
    Filed: July 12, 1991
    Date of Patent: December 20, 1994
    Assignee: Inrad
    Inventors: Dow Firnberg, James R. Fehlner
  • Patent number: 5364993
    Abstract: Fullerenes are selectively functionalized by adsorbing fullerene molecules on molecular sieves such as zeolites as the first step in a desired functionalizing reaction and then adding functional groups or compounds to the fullerenes within the molecular sieves. An improved reactor for fullerene material is thereby available. Selectively functionalized fullerenes formed in accordance with the invention can also serve as precursors for further selectively functionalized products.
    Type: Grant
    Filed: January 21, 1993
    Date of Patent: November 15, 1994
    Assignee: Inrad, Inc.
    Inventors: Zhenyu Zhang, Warren Ruderman, James R. Fehlner
  • Patent number: 5110425
    Abstract: A terminally chlorinated normal alkane hydrocarbon is produced at high terminal selectivity, by adsorbing a normal alkane into a select zeolite and chlorinating the adsorbed alkane in the zeolite. The zeolite may be of a type having internal channels of diameter slightly larger than that of the alkane, and substantially no internal chambers, and may be selected from the pentasil family of zeolites. The chlorination reaction may be conducted under heating to enhance terminal selectivity even further, in many cases to levels approaching 100%.
    Type: Grant
    Filed: October 10, 1990
    Date of Patent: May 5, 1992
    Assignee: Inrad, Inc.
    Inventors: Nicholas J. Turro, James R. Fehlner
  • Patent number: 4971664
    Abstract: A terminally chlorinated normal alkane hydrocarbon is produced at high terminal selectivity, by adsorbing a normal alkane into a select zeolite and chlorinating the adsorbed alkane in the zeolite. The zeolite may be of a type having internal channels of diameter slightly larger than that of the alkane, and substantially no internal chambers, and may be selected from the pentasil family of zeolites. The chlorination reaction may be conducted under heating to enhance terminal selectivity even further, in many cases to levels approaching 100%.
    Type: Grant
    Filed: July 13, 1988
    Date of Patent: November 20, 1990
    Assignee: Inrad, Inc.
    Inventors: Nicholas J. Turro, James R. Fehlner