Patents by Inventor George H. Smith

George H. Smith 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).

  • Sensitized aromatic iodonium or aromatic sulfonium salt photoinitiator systems
    Patent number: 4250053
    Abstract: Iodonium and sulfonium photoinitiators are naturally sensitive to only a small portion of the electromagnetic spectrum.Various classes of sensitizing dyes for iodonium and sulfonium salts are disclosed herein.
    Type: Grant
    Filed: May 21, 1979
    Date of Patent: February 10, 1981
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: George H. Smith
  • Complex salt photoinitiator
    Patent number: 4231951
    Abstract: A triarylsulfonium complex salt is described which has particular utility as a photoinitiator for the polymerization of epoxide monomers in thick films or coatings. Photopolymerizable compositions are also described.
    Type: Grant
    Filed: June 25, 1979
    Date of Patent: November 4, 1980
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: George H. Smith, Peter M. Olofson
  • Complex salt photoinitiator
    Patent number: 4173476
    Abstract: A triarylsulfonium complex salt is described which has particular utility as a photoinitiator for the polymerization of epoxide monomers in thick films or coatings. Photopolymerizable compositions are also described.
    Type: Grant
    Filed: February 8, 1978
    Date of Patent: November 6, 1979
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: George H. Smith, Peter M. Olofson
  • Photopolymerizable composition containing a sensitized aromatic sulfonium compound and a cationacally polymerizable monomer
    Patent number: 4069054
    Abstract: Aromatic sulfonium compounds are sensitized to longer wavelengths of light by means of aromatic tertiary amines, aromatic tertiary diamines and certain aromatic polycyclic compounds.
    Type: Grant
    Filed: September 2, 1975
    Date of Patent: January 17, 1978
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: George H. Smith
  • Aromatic diazonium bis(fluorinated alkylsulfonyl) methides
    Patent number: 4039521
    Abstract: Light sensitive diazonium compounds having an aromatic stable light sensitive nucleus with a bis-(fluorinated alkylsulfonyl) methide anion are found to be useful for many photosensitive systems. The fluorinated sulfonyl contains a highly fluorinated alkyl moiety.
    Type: Grant
    Filed: April 23, 1973
    Date of Patent: August 2, 1977
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: George H. Smith
  • Reel arrangement for electric wiring
    Patent number: 3959608
    Abstract: The operator's station of a lift truck is optionally elevatable with the carriage and the electric control interconnection between the operator's station, and the truck main frame includes a novel reel mechanism for the multiple lead electric conduit which does not use slip rings. The reel mechanism includes two drums which rotate together on a stationary shaft secured to the main frame. One drum is for coiling a flexible multi-lead round conduit which has its free end connected to the electric control console at the operator's station. The other drum contains a multiple lead flexible ribbon having its outer end connected to the inner end of the round conduit. The ribbon is coiled about the stationary shaft with its radially inner end passing through a hollowed portion of the stationary shaft and thence to a point of connection to a terminal block on the main frame.
    Type: Grant
    Filed: December 10, 1974
    Date of Patent: May 25, 1976
    Assignee: Allis-Chalmers Corporation
    Inventors: Thomas J. Finlayson, Michael H. Grace, George H. Smith