Patents by Inventor Robert J. Koshar
Robert J. Koshar 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).
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Patent number: 5676884Abstract: Nonlinear optical (NLO) compositions are disclosed which contain polar disulfone-functionalized molecules (PDFMs) incorporated in a polymeric material. when aligned noncentrosymmetrically in the polymeric material, the PDFMs generate a second-order NLO response. There is also disclosed: a method of preparing a NLO composition; novel PDFMs and novel polymers; and a new process for preparing PDFMs.Type: GrantFiled: November 20, 1996Date of Patent: October 14, 1997Assignee: Minnesota Mining and Manufacturing CompanyInventors: George V. Tiers, Robert J. Koshar, Louis M. Leichter
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Patent number: 5578251Abstract: A process for preparing polar disulfone-functionalized molecules, which process comprises performing one or more of the following reactions:(i) reacting a vinyl ether disulfone molecule with an activated aromatic molecule, an activated heterocyclic molecule, a dye base, or a dye olefin;(ii) reacting an enamine disulfone molecule with a dye base or a dye olefin; and(iii) reacting an alkenyl disulfone molecule having a vinylogous methyl or methylene group conjugatively located relative to the disulfone group with an aldehyde or an acetal derived from an aldehyde.Type: GrantFiled: August 5, 1994Date of Patent: November 26, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Gary T. Boyd, George V. Tiers, Cecil V. Francis, Eugene P. Janulis, Robert J. Koshar, Louis M. Leichter
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Patent number: 5360582Abstract: Nonlinear optical (NLO) compositions are disclosed which contain polar disulfone-functionalized molecules (PDFMs) incorporated in a polymeric material. When aligned noncentrosymmetrically in the polymeric material, the PDFMs generate a second-order NLO response. There is also disclosed: a method of preparing a NLO composition; novel PDFMs and novel polymers; and a new process for preparing PDFMs.Type: GrantFiled: July 15, 1991Date of Patent: November 1, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventors: Gary T. Boyd, George V. Tiers, Cecil V. Francis, Eugene P. Janulis, Robert J. Koshar, Louis M. Leichter
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Patent number: 4600774Abstract: Cyclic sulfoperfluoroaliphaticcarboxylic acid anhydrides, amide derivatives thereof, a process for making the same, curable compositions containing cyclic sulfoperfluoroaliphaticcarboxylic acid anhydrides or amide derivatives thereof and cationically-sensitive monomers, and a process for using cyclic sulfoperfluoroaliphaticcarboxylic acid anhydrides or amide derivatives thereof as catalysts for the cure of cationically-sensitive monomers.Type: GrantFiled: June 13, 1985Date of Patent: July 15, 1986Assignee: Minnesota Mining and Manufacturing CompanyInventor: Robert J. Koshar
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Patent number: 4565714Abstract: A low surface energy material is a hydrosilation reaction product of an ethylenically-unsaturated perfluoropolyether with a compound containing silicon-bonded hydrogen. A substrate bearing the low surface energy coating of the invention can be used in low-adhesion articles, for example, in adhesive tapes, for cooking utensils, ice-release for aircraft, or for magnetic recording media.Type: GrantFiled: June 14, 1984Date of Patent: January 21, 1986Assignee: Minnesota Mining and Manufacturing CompanyInventor: Robert J. Koshar
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Patent number: 4543398Abstract: Shaped articles, particularly ophthalmic devices, can be fabricated from oxygen transmissive, hydrolytically stable, polysiloxane copolymers of readily prepared poly(organosiloxane) monomers having monourethane acrylate groups and copolymerizable ethylenically-unsaturated monomers. The ophthalmic devices comprise copolymers of compositions containing 15 to 100 percent of said organopolysiloxane urethane acrylate and 85 to 0 percent of copolymerizable ethylenically-unsaturated monomers.Ophthalmic devices which are fabricated from monourethane acrylates of polysiloxane alcohols have high oxygen permeability. A novel process is disclosed for the preparation of these polysiloxanes which have at least one urethane acrylate substituent.Type: GrantFiled: September 19, 1984Date of Patent: September 24, 1985Assignee: Minnesota Mining and Manufacturing CompanyInventors: Stephen W. Bany, Robert J. Koshar, Todd R. Williams
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Patent number: 4429093Abstract: Acidic cyclic perfluoroaliphaticdisulfonimides, salts thereof, a process for making the same, curable compositions containing acidic cyclic perfluoroaliphaticdisulfonimides or salts thereof and cationically-sensitive monomers, and a process for using acidic cyclic perfluoroaliphaticdisulfonimides and salts thereof as catalysts for the cure of cationically-sensitive monomers.Type: GrantFiled: March 7, 1983Date of Patent: January 31, 1984Assignee: Minnesota Mining and Manufacturing Co.Inventor: Robert J. Koshar
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Patent number: 4387222Abstract: Acidic cyclic perfluoroaliphaticdisulfonimides, salts thereof, a process for making the same, curable compositions containing acidic cyclic perfluoroaliphaticdisulfonimides or salts thereof and cationically-sensitive monomers, and a process for using acidic cyclic perfluoroaliphaticdisulfonimides and salts thereof as catalysts for the cure of cationically-sensitive monomers.Type: GrantFiled: January 30, 1981Date of Patent: June 7, 1983Assignee: Minnesota Mining and Manufacturing CompanyInventor: Robert J. Koshar
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Patent number: 4332954Abstract: Cyclic sulfoperfluoroaliphaticcarboxylic acid anhydrides, amide derivatives thereof, a process for making the same, curable compositions containing cyclic sulfoperfluoroaliphaticcarboxylic acid anhydrides or amide derivatives thereof and cationically-sensitive monomers, and a process for using cyclic sulfoperfluoroaliphaticcarboxylic acid anhydrides or amide derivatives thereof as catalysts for the cure of cationically-sensitive monomers.Type: GrantFiled: January 30, 1981Date of Patent: June 1, 1982Assignee: Minnesota Mining and Manufacturing CompanyInventor: Robert J. Koshar
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Patent number: 4313988Abstract: This invention relates to cured epoxypolysiloxanes and their blends with epoxy-terminated silanes which are useful as release coatings for adhesive roll and sheet materials.Type: GrantFiled: December 15, 1980Date of Patent: February 2, 1982Assignee: Minnesota Mining and Manufacturing CompanyInventors: Robert J. Koshar, Stephen W. Bany
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Patent number: 4247674Abstract: Bis(fluoroaliphaticsulfonyl)imides are used as catalysts for the ring-opening polymerization of organocyclosiloxanes to produce lubricants, coatings or rubber precursors.Type: GrantFiled: August 13, 1979Date of Patent: January 27, 1981Assignee: Minnesota Mining and Manufacturing CompanyInventors: Robert J. Koshar, Stephen W. Bany
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Patent number: 4243783Abstract: Fluoroaliphaticsulfonyl substituted ethylenes, useful as catalysts in polymerization of monomers, e.g., epoxide, vinyl ether, and N-vinyl monomers, are prepared by condensation of precursor fluoroaliphaticsulfonyl methanes with aldehydes or N-formyl compounds.Type: GrantFiled: September 8, 1978Date of Patent: January 6, 1981Assignee: Minnesota Mining and Manufacturing CompanyInventor: Robert J. Koshar
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Patent number: 4156696Abstract: Fluoroaliphaticsulfonyl substituted methanes have the general formula ##STR1## WHEREIN R.sub.f is a fluoroaliphatic radical R.sub.3 is a radical selected from a group consisting of alkyl, perfluoroaliphatic or aryl. The fluoroaliphaticsulfonyl methanes may be condensed with aldehydes or N-formyl compounds to produce fluoroaliphaticsulfonyl substituted ethylenes which are useful as catalysts.Type: GrantFiled: May 9, 1977Date of Patent: May 29, 1979Assignee: Minnesota Mining and Manufacturing CompanyInventor: Robert J. Koshar
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Patent number: 4069233Abstract: Fluoroaliphaticsulfonyl substituted ethylenes, useful as catalysts in polymerization of monomers, e.g., epoxide, vinyl ether, and N-vinyl monomers, are prepared by condensation of precursor fluoroaliphaticsulfonyl methanes with aldehydes or N-formyl compounds.Type: GrantFiled: May 7, 1976Date of Patent: January 17, 1978Assignee: Minnesota Mining and Manufacturing CompanyInventor: Robert J. Koshar
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Patent number: 4054596Abstract: 1,1-Bis(perfluoroalkylsulfonyl)propanes substituted in the three position by two to three electron-withdrawing groups, particularly perfluoroalkylsulfonyl, carboxyl, carboalkoxy or cyano are catalysts for the polymerization of aromatic epoxy resins.Type: GrantFiled: March 7, 1975Date of Patent: October 18, 1977Assignee: Minnesota Mining and Manufacturing CompanyInventors: Robert J. Koshar, Loren L. Barber, Jr.
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Patent number: 4053519Abstract: 1,1-Bis(perfluoroalkylsulfonyl)propanes substituted in the three position by two to three electron-withdrawing groups, particularly perfluoroalkylsulfonyl, carboxyl, carboalkoxy or cyano are catalysts for the polymerization of aromatic epoxy resins.Type: GrantFiled: July 12, 1976Date of Patent: October 11, 1977Assignee: Minnesota Mining and Manufacturing CompanyInventors: Robert J. Koshar, Loren L. Barber, Jr.
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Patent number: 4031036Abstract: Bis(fluoroaliphaticsulfonyl)imides, in active or latent form, are used as catalysts for the polymerization of cationic sensitive monomers, e.g., epoxy resins.Type: GrantFiled: June 9, 1975Date of Patent: June 21, 1977Assignee: Minnesota Mining and Manufacturing CompanyInventor: Robert J. Koshar
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Patent number: 3984357Abstract: Fluoroaliphaticsulfonyl substituted ethylenes, useful as catalysts in polymerization of monomers, e.g., epoxide, vinyl ether, and N-vinyl monomers, are prepared by condensation of precursor fluoroaliphaticsulfonyl methanes with aldehydes or N-formyl compounds.Type: GrantFiled: March 27, 1974Date of Patent: October 5, 1976Assignee: Minnesota Mining and Manufacturing CompanyInventor: Robert J. Koshar
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Patent number: 3962346Abstract: Bis(perfluoroalkylsulfonyl)methanes condense with formaldehyde to give highly reactive 1,1-bis(perfluoroalkylsulfonyl)ethenes which are useful as catalysts for epoxy resins.Type: GrantFiled: March 7, 1975Date of Patent: June 8, 1976Assignee: Minnesota Mining and Manufacturing CompanyInventors: Loren L. Barber, Jr., Robert J. Koshar
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Patent number: 3932526Abstract: Fluoroaliphaticsulfonyl substituted ethylenes, useful as catalysts in polymerization of monomers, e.g., epoxide, vinyl ether, and N-vinyl monomers, are prepared by condensation of precursor fluoroaliphaticsulfonyl methanes with aldehydes or N-formyl compounds.Type: GrantFiled: October 25, 1972Date of Patent: January 13, 1976Assignee: Minnesota Mining and Manufacturing CompanyInventor: Robert J. Koshar