Patents Represented by Attorney John Boustead
  • Patent number: 4185083
    Abstract: Finely divided carbon is manufactured by a process including producing a gaseous stream containing carbon monoxide by reacting coal and air in a slagging ash gasifier, separating carbon monoxide from the gaseous mixture, and disproportionating the carbon monoxide to produce finely divided carbon and carbon dioxide, the latter of which is recycled to the gasifier.
    Type: Grant
    Filed: April 21, 1978
    Date of Patent: January 22, 1980
    Assignee: Tenneco Chemicals, Inc.
    Inventor: David G. Walker
  • 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
  • Patent number: 4176009
    Abstract: A method of measuring collagenase activity using as substrates peptide derivatives having the structure A-Pro-B-Gly-C-Ala-Gly-E wherein A is a hydrophobic neutral or acidic chromophore, B is an amino acid residue, C is Ile or Leu, E is Gln-D-Arg-OH or D-Arg-OH and all the amino acid residues except for Gly are L-configuration unless otherwise stated.
    Type: Grant
    Filed: November 21, 1977
    Date of Patent: November 27, 1979
    Assignee: Ajinomoto Co., Inc.
    Inventors: Shumpei Sakakibara, Yutaka Nagai, Kenji Fujiwara, Takahiro Sakai
  • 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by incorporating into the reaction mixture before foaming a derivative of melamine wherein one or more hydrogens have been replaced by hydroxymethyl and/or lower alkoxymethyl groups.In one embodiment, flexible polyurethane foams of increased flame retardance are also provided, by also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
  • Patent number: 4138394
    Abstract: Peptide derivatives are obtained by eliminating the masking groups from masked peptide derivatives in which the guanidino group of an arginine residue and the carboxyl group of the arginine residue are masked. The guanidino group can be masked, for example, with a tosyl, nitro or benzyloxycarbonyl group, and the carboxyl group can be masked by converting it to an ester group, for example, a benzyl or t-butyl ester group. The masking groups can be eliminated using hydrogen fluoride, for example.
    Type: Grant
    Filed: January 21, 1977
    Date of Patent: February 6, 1979
    Assignee: Ajinomoto Co., Inc.
    Inventors: Shumpei Sakakibara, Yutaka Nagai, Kenji Fujiwara, Takahiro Sakai
  • Patent number: 4124518
    Abstract: There is disclosed a one-shot process for the manufacture of a filled detergent hydrophilic flexible polyurethane foam from a clay filler, an alkylaryl sulfonate detergent, a normally liquid polyether polyol, tolylene diisocyanate and water as a blowing agent.
    Type: Grant
    Filed: March 24, 1977
    Date of Patent: November 7, 1978
    Assignee: Tenneco Chemicals, Inc.
    Inventors: Herman Stone, Peter D. Pauly
  • 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
  • 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