Patents by Inventor John F. Kistner

John F. Kistner 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: 5998549
    Abstract: Novel polymeric compounds having pendent fluoroaliphatic groups, pendent organic-solubilizing groups, and pendent groups capable of reacting with an epoxy silane; which have been reacted with an epoxy silane have been discovered. These compounds are easy to apply, abrasion and impact resistant, and provide durable, low surface energy, streak reducing surfaces on coating dies, edge guides, and other coating and fluid contacting surfaces.
    Type: Grant
    Filed: May 31, 1996
    Date of Patent: December 7, 1999
    Assignee: 3M Innovative Properties Company
    Inventors: Thomas M. Milbourn, John F. Kistner, Larry A Lien
  • Patent number: 5980992
    Abstract: A process for treating silicon-containing organic polymeric surfaces (e.g., spent, fluorosilane-containing, low-energy coatings) including applying a treatment composition comprising a fluorochemical compound. Preferably, the fluorochemical compound is a fluorinated silane having the following formula:R.sub.f --L--SiX.sub.3-x (R.sub.a).sub.xwherein: R.sub.f is a fluoroaliphatic group containing a perfluorinated terminal group; L is a covalent bond, a heteroatom, or an organic linking group; R.sub.a is an alkoxy group, an alkyl group, or an acyloxy group; X is a halide; and x is 0 to 3, with the proviso that when R.sub.a is an alkyl group, x is not 3.
    Type: Grant
    Filed: October 3, 1997
    Date of Patent: November 9, 1999
    Assignee: 3M Innovative Properties Company
    Inventors: John F. Kistner, Thomas M. Milbourn
  • Patent number: 5928562
    Abstract: A process for controlling the cone tilt angle of a tilted smectic liquid crystal composition comprises the step of combining (a) at least one liquid crystal composition comprising at least one smectic or latent smectic liquid crystal compound comprising (i) an aliphatic fluorocarbon terminal portion comprising a terminal fluoroalkyl or fluoroether group and an alkylene group having at least two carbon atoms and containing at least one catenary ether oxygen atom, (ii) an aliphatic hydrocarbon terminal portion, and (iii) a central core connecting the terminal portions; and (b) at least one liquid crystal composition comprising at least one smectic or latent smectic liquid crystal compound; with the provisos that at least one of the compositions (a) and (b) comprises at least one chiral liquid crystal compound and that the combining of compositions (a) and (b) provides an optically active, tilted chiral smectic liquid crystal composition.
    Type: Grant
    Filed: March 27, 1997
    Date of Patent: July 27, 1999
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: John F. Kistner, Marc D. Radcliffe, Patricia M. Savu, Daniel C. Snustad
  • Patent number: 5658491
    Abstract: A process for controlling the cone tilt angle of a tilted smectic liquid crystal composition comprises the step of combining (a) at least one liquid crystal composition comprising at least one smectic or latent smectic liquid crystal compound comprising (i) an aliphatic fluorocarbon terminal portion comprising a terminal fluoroalkyl or fluoroether group and an alkylene group having at least two carbon atoms and containing at least one catenary ether oxygen atom, (ii) an aliphatic hydrocarbon terminal portion, and (iii) a central core connecting the terminal portions; and (b) at least one liquid crystal composition comprising at least one smectic or latent smectic liquid crystal compound; with the provisos that at least one of the compositions (a) and (b) comprises at least one chiral liquid crystal compound and that the combining of compositions (a) and (b) provides an optically active, tilted chiral smectic liquid crystal composition.
    Type: Grant
    Filed: October 12, 1995
    Date of Patent: August 19, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: John F. Kistner, Marc D. Radcliffe, Patricia M. Savu, Daniel C. Snustad
  • Patent number: 5137758
    Abstract: An automated coating apparatus includes a coating unit for applying a curable liquid material to the entire edge-to-edge surface area of one side of a flexible sheet. The sheet is then received on a rotatable drum adjacent the curing device, and moved back and forth next to the curing device to cure the liquid material. The drum includes a plurality of apertures in communication with a regenerative blower for retaining the sheet on the drum during the curing operation without contacting the uncured liquid material on the opposite face of the sheet. The curvature of the drum functions to essentially counteract the tendency of the sheet to curl during the curing operation.
    Type: Grant
    Filed: March 27, 1991
    Date of Patent: August 11, 1992
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: John F. Kistner, Thomas M. Milbourn, Robert G. Pleban
  • Patent number: 5013621
    Abstract: A one-part coating composition for the backside of photographic prints and photographic prints so coated are described. The white coating is reflective, flexible, and water resistant.
    Type: Grant
    Filed: April 23, 1990
    Date of Patent: May 7, 1991
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: John F. Kistner
  • Patent number: 4668601
    Abstract: A radiation-curable composition suitable for use as a protective coating for a photographic element comprises a polymerizable acrylic compound, a polymerizable epoxy-functional silane compound, a free-radical photoinitiator capable of initiating polymerization of said acrylic compound, and 0 to 2 percent of the total composition on a weight basis of a cationic photoinitiator capable of initiating polymerization of said epoxy-functional silane compound, said composition containing epoxy functionality only in a silane compound.
    Type: Grant
    Filed: August 18, 1986
    Date of Patent: May 26, 1987
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: John F. Kistner
  • Patent number: 4629667
    Abstract: A coating composition for the backside of photographic prints and photographic prints so coated are described. The white coating is reflective, flexible, and water resistant.
    Type: Grant
    Filed: March 29, 1985
    Date of Patent: December 16, 1986
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: John F. Kistner, Donald R. Hotchkiss
  • Patent number: 4623676
    Abstract: A radiation-curable composition suitable for use as a protective coating for a photographic element comprises a polymerizable acrylic compound, a polymerizable epoxy-functional silane compound, a free-radical photoinitiator capable of initiating polymerization of said acrylic compound, and 0 to 2 percent of the total composition on a weight basis of a cationic photoinitiator capable of initiating polymerization of said epoxy-functional silane compound, said composition containing epoxy functionality only in a silane compound.
    Type: Grant
    Filed: January 18, 1985
    Date of Patent: November 18, 1986
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: John F. Kistner
  • Patent number: 4619949
    Abstract: Abrasion resistant films formed by the copolymerization of epoxy-terminated silanes and an aliphatic monoepoxy resin display reduced odor and increased water-repellency.
    Type: Grant
    Filed: January 7, 1986
    Date of Patent: October 28, 1986
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: John F. Kistner
  • Patent number: 4587169
    Abstract: Abrasion resistant films formed by the copolymerization of epoxy-terminated silanes and an aliphatic monoepoxy resin display reduced odor and increased water-repellency.
    Type: Grant
    Filed: August 17, 1984
    Date of Patent: May 6, 1986
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: John F. Kistner
  • Patent number: 4497861
    Abstract: Abrasion resistant films formed by the copolymerization of epoxy-terminated silanes and limonene monoxide display water repellency that reduces damage to the integrity of the film.
    Type: Grant
    Filed: May 20, 1983
    Date of Patent: February 5, 1985
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: John F. Kistner
  • Patent number: 4088500
    Abstract: Molding compositions useful for molding water-extended hydrophilic articles are provided which are tough, soft and form-stable and comprise, generally, an amide-endcapped hydrophilic alkylene oxide polymer, a crosslinking agent, water, and a filler. The composition is cured by means of an acid catalyst. The compositions are useful in the preparation of denture liners which exhibit excellent adhesion to denture plates and provide structural stability, toughness and softness.
    Type: Grant
    Filed: August 9, 1973
    Date of Patent: May 9, 1978
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Charles W. Fairbanks, John F. Kistner
  • Patent number: RE32476
    Abstract: Aggregate material is contacted with a fluid agent comprising a hydrophilic urethane prepolymer to form a hydrophilic polyurethane-polyurea polymeric matrix which adhesively bonds the aggregate together as a resilient, integral, water-permeable mass which will sustain plant growth.This is a Reissue of a Patent which was the subject of a Reexamination Certificate No. [B1 3,805,532], dated [Jul. 16, 1985], Request No. [90/000,598], [Jul. 30, 1984].
    Type: Grant
    Filed: April 22, 1986
    Date of Patent: August 18, 1987
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: John F. Kistner