Patents by Inventor Gilbert C. Johnson

Gilbert C. Johnson 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: 5972241
    Abstract: Fluorine-containing, chiral liquid crystal compounds comprise (a) a chiral fluorochemical terminal portion containing at least one methylene group and optionally containing at least one catenary ether oxygen atom; (b) a saturated, chiral or achiral, hydrocarbon terminal portion; and (c) a central core connecting the terminal portions. The compounds have smectic mesophases or latent smectic mesophases and are useful, for example, in liquid crystal display devices.
    Type: Grant
    Filed: November 6, 1997
    Date of Patent: October 26, 1999
    Assignee: 3M Innovative Properties Company
    Inventors: Gilbert C. Johnson, Marc D. Radcliffe, Patricia M. Savu, Daniel C. Snustad, Terence D. Spawn
  • Patent number: 5702637
    Abstract: Fluorine-containing, chiral liquid crystal compounds comprise (a) a chiral fluorochemical terminal portion containing at least one methylene group and optionally containing at least one catenary ether oxygen atom; (b) a saturated, chiral or achiral, hydrocarbon terminal portion; and (c) a central core connecting the terminal portions. The compounds have smectic mesophases or latent smectic mesophases and are useful, for example, in liquid crystal display devices.
    Type: Grant
    Filed: April 19, 1995
    Date of Patent: December 30, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gilbert C. Johnson, Marc D. Radcliffe, Patricia M. Savu, Daniel C. Snustad, Terence D. Spawn
  • Patent number: 5482650
    Abstract: Fluorine-containing liquid crystal compounds comprise a fluorocarbon terminal portion having at least one catenary ether oxygen and a hydrocarbon terminal portion, the terminal portions being connected by a central core. The compounds have smectic or latent smectic mesophases.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: January 9, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Eugene P. Janulis, Gilbert C. Johnson, Marc D. Radcliffe, Patricia M. Savu, Daniel C. Snustad, Terence D. Spawn
  • Patent number: 5474705
    Abstract: Fluorine-containing, chiral liquid crystal compounds comprise (a) an aliphatic fluorocarbon terminal portion containing at least two catenary ether oxygen atoms; (b) a chiral, aliphatic hydrocarbon terminal portion; and (c) a central core connecting the terminal portions. The compounds have smectic mesophases or latent smectic mesophases and are useful, for example, in liquid crystal display devices.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: December 12, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Eugene P. Janulis, Gilbert C. Johnson, Marc D. Radcliffe, Patricia M. Savu, Daniel C. Snustad, Terence D. Spawn
  • Patent number: 5437812
    Abstract: Fluorine-containing liquid crystal compounds are provided. The compounds comprise a fluorocarbon terminal portion having at least one catenary ether oxygen and a hydrocarbon terminal portion, the terminal portion being connected by a central core, the compounds having smectic mesophases or having latent smectic mesophases.
    Type: Grant
    Filed: April 16, 1993
    Date of Patent: August 1, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Eugene P. Janulis, Gilbert C. Johnson, Patricia M. Savu, Terence D. Spawn, Marc D. Radcliffe
  • Patent number: 5399291
    Abstract: Fluorine-containing, chiral and achiral liquid crystal compounds comprise (a) an aliphatic fluorocarbon terminal portion comprising a perfluorinated or partially-fluorinated alkylene group and a terminal hydrocarbon alkyl group, the groups optionally containing at least one catenary ether oxygen atom; (b) an aliphatic hydrocarbon terminal portion; and (c) a central core connecting the terminal portions. The compounds have smectic mesophases or latent smectic mesophases and are useful, for example, in liquid crystal display devices.
    Type: Grant
    Filed: September 30, 1993
    Date of Patent: March 21, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Eugene P. Janulis, Gilbert C. Johnson, Marc D. Radcliffe, Patricia M. Savu, Daniel C. Snustad, Terence D. Spawn
  • Patent number: 5262082
    Abstract: Fluorine-containing liquid crystal compounds are provided. The compounds comprise a fluorocarbon terminal portion having at least one catenary ether oxygen and a hydrocarbon terminal portion, the terminal portion being connected by a central core, the compounds having smectic mesophases or having latent smectic mesophases.
    Type: Grant
    Filed: April 28, 1992
    Date of Patent: November 16, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Eugene P. Janulis, Gilbert C. Johnson, Patricia M. Savu, Terence D. Spawn
  • Patent number: 4921930
    Abstract: Organic solvent soluble, acryloyloxy and methacryloyloxy group-containing, condensation polymers are crosslinkable and useful for providing chemical, solvent, and abrasion resistant articles. The condensation polymers are polyesters or polyurethanes having an acryloyloxy or methacryloyloxyalkanediol component that is uncontaminated by hydroxyl group-containing compounds having one, three, or more hydroxyl groups or compounds in which the acryloyloxy or methacryloyloxy group is attached to a secondary carbon atom.
    Type: Grant
    Filed: September 22, 1989
    Date of Patent: May 1, 1990
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Gilbert C. Johnson
  • Patent number: 4910281
    Abstract: Organic solvent soluble, acryloyloxy and methacryloyloxy group-containing, condensation polymers are crosslinkable and useful for providing chemical, solvent, sand abrasion resistant articles. The condensation polymers are polyesters or polyurethanes having an acryloyloxy or methacryloyloxyalkanediol component that is uncontaminated by hydroxyl group-containing compounds having one, three, or more hydroxyl groups or compounds in which the acryloyloxy or methacryloyloxy group is attached to a secondary carbon atom.
    Type: Grant
    Filed: September 22, 1987
    Date of Patent: March 20, 1990
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Gilbert C. Johnson
  • Patent number: 4654233
    Abstract: A coating composition is provided. The coating composition is a curable blend of ethylenically unsaturated polyester and ethylenically unsaturated thermoplastic polymers. The composition is capable of providing a thermoplastic, soluble, sandable, intermediate-stage coating and, when cured, a final stage coating which is unaffected by acetone placed on the final stage coating for two hours at 22.degree. C., has a percent haze value of 15% or less, and is unaffected when subjected to a Wet Print Test.
    Type: Grant
    Filed: November 21, 1984
    Date of Patent: March 31, 1987
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Richard J. Grant, Gilbert C. Johnson, Heather V. Landin
  • Patent number: 4567237
    Abstract: Ethylenically unsaturated polyesters are provided. These ethylenically unsaturated polyesters are the reaction product of (a) a polyhydroxy polyester material that is the reaction product of at least one organic dicarboxylic acid, at least one diepoxide, and, optionally, monocarboxylic acid and/or monoepoxide with (b) a polymerizable ethylenically unsaturated compound having a functional group reactive with the hydroxyl groups of the polyhydroxy polyester. This product is particularly useful as a protective coating material.
    Type: Grant
    Filed: November 21, 1984
    Date of Patent: January 28, 1986
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gilbert C. Johnson, Heather V. Landin
  • Patent number: 3979852
    Abstract: A fishing pole mounting device, for fishing poles equipped with a handle, a reel adjacent the handle and having a fishing line wound thereon and threaded through eyelets for attachment to fishing lures, which device comprises a post adapted to be mounted in an upright position and having a one piece frame secured thereto which defines a forwardly projecting portion at its projecting end shaped to define a laterally extending bridge arm over which the pole when in use extends, a fishing rod handle receiving assembly defining a socket for slip-fit receiving therein the handle of the fishing pole to mount the pole in its operative position on the assembly, with the assembly being mounted for swinging the fishing pole between a first position extending over the bridge arm and a second position in which the pole is disposed upright, means to bias the handle receiving assembly for movement to its second position, and a hold down and release mechanism for holding the pole at the assembly first position, with the hol
    Type: Grant
    Filed: September 8, 1975
    Date of Patent: September 14, 1976
    Inventor: Gilbert C. Johnson