Patents by Inventor Bernard Rudner

Bernard Rudner 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).

  • Intumescent flexible polyurethane foam having incorporated into the reaction mixture an aliphatic aldehyde
    Patent number: 4275169
    Abstract: Flexible polyurethane foam having reduced tendency to form burning embers and which produces a char when it is ignited and burned is provided by incorporating into the reaction mixture before foaming an aldehyde or an aldehyde generator.In a preferred embodiment, flexible polyurethane foam of increased flame retardance is provided by also incorporating a flame retardant into the reaction mixture before foaming.
    Type: Grant
    Filed: September 19, 1979
    Date of Patent: June 23, 1981
    Assignee: Tenneco Chemicals, Inc.
    Inventors: Bernard Rudner, Herman Stone
  • Coated fibers and related process
    Patent number: 4265972
    Abstract: A composite fiber or filament comprising a core or substrate coated with a cellular foam, and an outer circumference characterized by a substantially continuous, microcellular breathable and abrasion-resistant aspect.
    Type: Grant
    Filed: March 9, 1979
    Date of Patent: May 5, 1981
    Inventor: Bernard Rudner
  • Manufacture of rigidized convoluted foam from flexible polyurethane foam and resultant product
    Patent number: 4178161
    Abstract: A rigidized convoluted foam suitable as a self-standing filter is made by passing a sheet of air-permeable flexible polyurethane foam through a convoluting machine to obtain two unnested sheets of convoluted foam, each sheet being convoluted on only one side. The two sheets are nested and impregnated from the flat surface of each sheet almost to the closest valley surface with a thermosetting melamine, urea, or benzoguanamine resin in an amount to not appreciably impair the permeability of the foam and to increase the rigidity of the foam sufficiently so that each unnested sheet will be self-standing. After the resin has reacted, the nested sheets are separated.
    Type: Grant
    Filed: July 26, 1978
    Date of Patent: December 11, 1979
    Assignee: Tenneco Chemicals, Inc.
    Inventors: Bernard Rudner, David Reich, Edward Galica
  • Production of polyurethane foam of reduced tendency to form embers when burned
    Patent number: 4139501
    Abstract: Flexible polyurethane foam having reduced tendency to form burning embers when it is ignited and burned is provided by incorporating into the reaction mixture before foaming a derivative of melamine wherein one or more hydrogens have been replaced by hydroxymethyl and/or lower alkoxymethyl groups.In one embodiment, flexible polyurethane foams of increased flame retardance are also provided, by also incorporating a halogenated phosphorus ester into the reaction mixture before foaming.
    Type: Grant
    Filed: October 19, 1977
    Date of Patent: February 13, 1979
    Assignee: Tenneco Chemicals, Inc.
    Inventors: Bernard Rudner, Thomas M. Noone, Peter D. Pauly
  • Smoking compositions
    Patent number: 4125118
    Abstract: The amounts of tars, nicotine, phenols, carbon monoxide, hydrogen cyanide, and other toxic materials generated during the smoking of tobacco and its substitutes is reduced by incorporating in the smoking composition a small amount of a transition metal compound, e.g., chromium n-heptanoate.
    Type: Grant
    Filed: January 4, 1977
    Date of Patent: November 14, 1978
    Assignee: Tenneco Chemicals, Inc.
    Inventor: Bernard Rudner
  • Composite fluid filtering medium and method of making
    Patent number: 4099943
    Abstract: A layer of open cell polyurethane foam adhered to a layer of a non-woven fibrous material of fine porosity relative to the foam results in an efficient fluid (e.g., air) filtering medium having a high capacity for retaining particulate contaminants. The combined layers are useful as an air filter element.
    Type: Grant
    Filed: October 18, 1976
    Date of Patent: July 11, 1978
    Assignee: Tenneco Chemicals, Inc.
    Inventors: Kurt Fischman, Robert Offer, Bernard Rudner, David Shepard
  • Polyurethane foam of increased rigidity
    Patent number: 4082704
    Abstract: The invention provides a polyurethane foam of increased rigidity.The invention is provided by impregnating a flexible polyurethane foam with a thermosetting melamine, urea or benzoguanamine resin and a cross-linker, and then reacting the resin with the cross-linker.
    Type: Grant
    Filed: July 6, 1976
    Date of Patent: April 4, 1978
    Assignee: Tenneco Chemicals, Inc.
    Inventors: Bernard Rudner, Thomas M. Noone
  • Flame-retardant polyurethane foam compositions
    Patent number: 4052346
    Abstract: Flexible, substantially nonlustrous, open-celled polyurethane foam made by an in situ process is rendered permanently flame-retardant by the incorporation of tribromoneopentyl alcohol into the reaction mixture.
    Type: Grant
    Filed: June 3, 1975
    Date of Patent: October 4, 1977
    Assignee: Tenneco Chemicals, Inc.
    Inventors: Bernard Rudner, Peter Daniel Pauly
  • Fire-retardant polyurethane resins prepared from side-chain halogenated aromatic polyisocyanates
    Patent number: 3939124
    Abstract: Polyurethanes are made fire-retardant by including in the reaction mixture aromatic polyisocyanates having halogen-containing side chains.
    Type: Grant
    Filed: September 9, 1974
    Date of Patent: February 17, 1976
    Assignee: Tenneco Chemicals, Inc.
    Inventors: Eugene P. DiBella, Bernard Rudner