Patents Represented by Attorney Gerald F. Chernivec

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  • Two-part reactive dielectric filler composition
    Patent number: 4102716
    Abstract: A two-part pourable composition capable of forming a dielectric, thermally stable, hydrolytically stable, moisture insensitive polyurethane gel comprising in a first part an aliphatic or cycloaliphatic isocyanate and an aliphatic/naphthenic hydrocarbon oil, and in a second part a polyalkadiene polyol, a dialkyl organotin catalyst, and the aliphatic/naphthenic oil. The gel is ideally suitable as a filler for communication cable splices since it is substantially inert toward molded polycarbonate connectors conventionally used in such splices.
    Type: Grant
    Filed: May 11, 1976
    Date of Patent: July 25, 1978
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: James D. Groves, Deborah Sue Anne D'Zuro
  • Organotin catalyst system for isocyanate reactions
    Patent number: 4087412
    Abstract: An organotin catalyst system for catalyzing the formation of polyurethane polymers comprising a catalytic amount of a mixture of a bis(tri-n-alkyl tin)oxide and the reaction product of a carboxylic acid and a dialkyl tin oxide.
    Type: Grant
    Filed: May 11, 1976
    Date of Patent: May 2, 1978
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: James D. Groves
  • Driographic master
    Patent number: 4074009
    Abstract: A driographic plate capable of being direct imaged by pen, pencil, typewriter, toner powder, etc. comprising a substrate having a coating thereon, the coating comprising a continuous medium having a solid fluorinated compound containing at least one fluorinated aliphatic radical uniformly dispersed therethrough in a manner such that the coating surface is ink repellent when dry. On direct imaging, the imaged areas will readily accept ink and prints can be made therefrom without necessity of a press dampening system.
    Type: Grant
    Filed: December 8, 1975
    Date of Patent: February 14, 1978
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: James F. Sanders
  • Method for strengthening lithographic printing plate images
    Patent number: 4070969
    Abstract: Aluminum based lithographic printing plates are treated with triethanolamine titanate and heat to impart added solvent resistance and strength to non-crosslinked ink-receptive image areas, thereby affording an increase in press life.
    Type: Grant
    Filed: July 16, 1976
    Date of Patent: January 31, 1978
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Jack R. Helmer
  • Acid zinc electroplating bath and process
    Patent number: 4070256
    Abstract: An aqueous, ammonium ion-free acid zinc electroplating solution comprising a source of zinc ion, a soluble electrolyte, boric acid, a non-ionic polyoxyalkylated surfactant, and an organic acid, the bath being operable at a pH of about 3.0 to about 6.5. Preferably, the bath also contains a brightener. Spent baths are simply and inexpensively disposed of.
    Type: Grant
    Filed: June 16, 1975
    Date of Patent: January 24, 1978
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Grace F. Hsu, Jaan-Jiue Fong
  • Applying sublimation indicia to pressure-sensitive adhesive tape
    Patent number: 4063878
    Abstract: A method for imprinting permanent indicia on backsized pressure-sensitive adhesive tapes comprising contacting the tape with a heat-sublimable dye source material in conjunction with a stencil or raised relief-imaged heat-conductive platen, and raising the temperature to a point sufficient to vaporize the dye, whereupon at least a portion of the dye penetrates through the backsizing to become absorbed in the flexible tape backing. In this manner, the image contained on the tape is permanent, smudge-proof and abrasion-resistant.
    Type: Grant
    Filed: November 12, 1975
    Date of Patent: December 20, 1977
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Bruce W. Weeks
  • Pressure sensitive hot-melt adhesive system
    Patent number: 4049483
    Abstract: A hot melt adhesive system which has pressure-sensitive adhesive characteristics at room temperature comprising a heat-activatable hot melt adhesive containing therein inherently tacky elastomeric copolymer microspheres.
    Type: Grant
    Filed: November 18, 1976
    Date of Patent: September 20, 1977
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Harry A. Loder, Charles A. Mathna
  • Cadmium electroplating bath and process
    Patent number: 4045305
    Abstract: An aqueous acidic cadmium electroplating bath containing cadmium ion, sulfuric and/or fluoboric free acid and a surfactant comprised of a combination of a condensed naphthalene sulfonate and a non-ionic polyoxyalkylated compound. Preferably, the bath also contains one or more brighteners.
    Type: Grant
    Filed: July 14, 1975
    Date of Patent: August 30, 1977
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Jaan-Jiue Fong, Grace F. Hsu
  • Metal lithographic plate made imageable by diffusion transfer by treatment with Group IV-B metal fluoride
    Patent number: 4018605
    Abstract: A hydrophilic-surfaced metallic foil capable of providing a lithographic printing plate upon imaging by the silver salt diffusion transfer process, the foil being treated with an aqueous solution of a water soluble Group IV-B hexavalent metal fluoride compound prior to imaging, and the lithographic plate so produced.
    Type: Grant
    Filed: April 21, 1975
    Date of Patent: April 19, 1977
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: David B. Olsen
  • Moisture-resistant solar control film
    Patent number: RE29663
    Abstract: Solar control film having a water-activatable adhesive system comprising a normally tacky and pressure-sensitive adhesive coating which is covered by a thin tack-free continuous water-soluble layer. The product, which does not require a liner, can be moistened and installed on a windowpane, the water-soluble layer providing lubrication during positioning and the pressure-sensitive adhesive providing the primary bonding to the glass.
    Type: Grant
    Filed: June 24, 1977
    Date of Patent: June 6, 1978
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Donald R. Theissen