Patents by Inventor Robert R. Rohloff

Robert R. Rohloff 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: 5370273
    Abstract: An applicator assembly is provided for concurrently dispensing plural flowable component materials in a mixed state. Moreover, the applicator assembly is more versatile and is particularly useful when one or more additional components are to be concurrently dispensed with the basic two component materials. The applicator assembly permits dispensing of additives with basic two part mixtures, and allows the application of three or more part chemical systems. A multi-component applicator assembly is described which is convertible between different component number multi-component arrangements, and includes a barrel assembly having at least one barrel detachably connected to the other barrels, at least two of which are fixed to one another.
    Type: Grant
    Filed: October 16, 1991
    Date of Patent: December 6, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Robert R. Rohloff, Walter C. Pearson
  • Patent number: 4394434
    Abstract: Deposition of extraneous metal on the surface of an electroless or electrolytic plating resist is reduced by dispersing into the resist formulation fumed aluminum oxide microparticles.
    Type: Grant
    Filed: December 8, 1980
    Date of Patent: July 19, 1983
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Robert R. Rohloff
  • Patent number: 4252888
    Abstract: A photopolymerizable composition which is screen-printable and has utility as a solder mask, the composition comprising aryloxyalkyl acrylate monomers or prepolymers, a diacrylate diluent, a monofunctional monomer and a free-radical initiating system.
    Type: Grant
    Filed: February 26, 1980
    Date of Patent: February 24, 1981
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Robert R. Rohloff
  • Patent number: 4242437
    Abstract: A photosensitized polyamic acid film comprising polyamic acid and a photoinitiator, which is curable to a polyimide upon exposure to actinic radiation in the absence of externally applied heat.
    Type: Grant
    Filed: May 11, 1979
    Date of Patent: December 30, 1980
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Robert R. Rohloff