Patents by Inventor Daniel R. Vitcak
Daniel R. Vitcak 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: 6426327Abstract: The invention provides azeotrope-like compositions consisting essentially of RfOCH3, where Rf is a branched or straight chain perfluoroalkyl group having 4 carbon atoms, and one or more organic solvent(s) selected from the group consisting of: straight chain, branched chain and cyclic alkanes containing 6 to 8 carbon atoms; cyclic and acyclic ethers containing 4 to 6 carbon atoms; ketones having 3 carbon atoms; chlorinated alkanes containing 1, 3 or 4 carbon atoms; chlorinated alkenes containing 2 carbon atoms, alcohols containing 1 to 4 carbon atoms, partially fluorinated alcohols containing 2 to 3 carbon atoms, 1-bromopropane, acetonitrile, HCFC 225ca (1,1,-dichloro-2,2,3,3,3 pentafluoropropane and HCFC-225cb (1,3-dichloro-1,1,2,2,3-pentafluoropropane).Type: GrantFiled: February 14, 2001Date of Patent: July 30, 2002Assignee: 3M Innovative Properties CompanyInventors: Richard M. Flynn, Dean S. Milbrath, John G. Owens, Daniel R. Vitcak, Hideto Yanome
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Patent number: 6313083Abstract: The invention provides azeotrope-like compositions consisting essentially of RfOCH3, where Rf is a branched or straight chain perfluoroalkyl group having 4 carbon atoms, and one or more organic solvent(s) selected from the group consisting of: straight chain, branched chain and cyclic alkanes containing 6 to 8 carbon atoms; cyclic and acyclic ethers containing 4 to 6 carbon atoms; ketones having 3 carbon atoms; chlorinated alkanes containing 1, 3 or 4 carbon atoms; chlorinated alkenes containing 2 carbon atoms, alcohols containing 1 to 4 carbon atoms, partially fluorinated alcohols containing 2 to 3 carbon atoms, 1-bromopropane, acetonitrile, HCFC 225ca (1,1,-dichloro-2,2,3,3,3 pentafluoropropane and HCFC- 225cb (1,3-dichloro-1,1,2,2,3-pentafluoropropane).Type: GrantFiled: February 14, 2001Date of Patent: November 6, 2001Assignee: 3M Innovative Properties CompanyInventors: Richard M. Flynn, Dean S. Milbrath, John G. Owens, Daniel R. Vitcak, Hideto Yanome
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Patent number: 6288017Abstract: The invention provides azeotrope-like compositions consisting essentially of RfOCH3, where Rf is a branched or straight chain perfluoroalkyl group having 4 carbon atoms, and one or more organic solvent(s) selected from the group consisting of: straight chain, branched chain and cyclic alkanes containing 6 to 8 carbon atoms; cyclic and acyclic ethers containing 4 to 6 carbon atoms; ketones having 3 carbon atoms; chlorinated alkanes containing 1, 3 or 4 carbon atoms; chlorinated alkenes containing 2 carbon atoms, alcohols containing 1 to 4 carbon atoms, partially fluorinated alcohols containing 2 to 3 carbon atoms, 1-bromopropane, acetonitrile, HCFC 225ca (1,1,-dichloro-2,2,3,3,3 pentafluoropropane and HCFC-225cb (1,3-dichloro-1,1,2,2,3-pentafluoropropane).Type: GrantFiled: October 28, 1999Date of Patent: September 11, 2001Assignee: 3M Innovative Properties CompanyInventors: Richard M. Flynn, Dean S. Milbrath, John G. Owens, Daniel R. Vitcak, Hideto Yanome
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Patent number: 6288018Abstract: The invention provides azeotrope-like compositions consisting essentially of RfOC2H5, where Rf is a branched or straight chain perfluoroalkyl group having 4 carbon atoms, and an organic solvent selected from the group consisting of: straight chain, branched chain and cyclic alkanes having 6 to 8 carbon atoms; esters having 4 carbon atoms; ketones having 4 carbon atoms; disiloxanes having 6 carbon atoms; cyclic and acyclic ethers having 4 to 6 carbon atoms; chlorinated alkanes having 3 to 4 carbon atoms and chlorinated alkenes having 2 carbon atoms. The compositions are useful for cleaning, as solvents or carriers for coating and as heat transfer materials.Type: GrantFiled: February 14, 2001Date of Patent: September 11, 2001Assignee: 3M Innovative Properties CompanyInventors: Richard M. Flynn, Dean S. Milbrath, John G. Owens, Daniel R. Vitcak, Hideto Yanome
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Publication number: 20010018408Abstract: The invention provides azeotrope-like compositions consisting essentially of RfOC2H5, where Rf is a branched or straight chain perfluoroalkyl group having 4 carbon atoms, and an organic solvent selected from the group consisting of: straight chain, branched chain and cyclic alkanes having 6 to 8 carbon atoms; esters having 4 carbon atoms; ketones having 4 carbon atoms; disiloxanes having 6 carbon atoms; cyclic and acyclic ethers having 4 to 6 carbon atoms; chlorinated alkanes having 3 to 4 carbon atoms and chlorinated alkenes having 2 carbon atoms. The compositions are useful for cleaning, as solvents or carriers for coating and as heat transfer materials.Type: ApplicationFiled: February 14, 2001Publication date: August 30, 2001Applicant: 3M Innovative Properties CompanyInventors: Richard M. Flynn, Dean S. Milbrath, John G. Owens, Daniel R. Vitcak, Hideto Yanome
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Patent number: 6277807Abstract: The invention provides azeotropc-like compositions consisting essentially of RfOCH3, where Rf is a branched or straight chain perfluoroalkyl group having 4 carbon atoms, and one or more organic solvent(s) selected from the group consisting of: straight chain, branched chain and cyclic alkanes containing 6 to 8 carbon atoms; cyclic and acyclic ethers containing 4 to 6 carbon atoms; ketones having 3 carbon atoms; chlorinated alkanes containing 1, 3 or 4 carbon atoms; chlorinated alkenes containing 2 carbon atoms, alcohols containing 1 to 4 carbon atoms, partially fluorinated alcohols containing 2 to 3 carbon atoms, 1-bromopropane, acetonitrile, HCFC 225ca (1,1,-dichloro-2,2,3,3,3 pentafluoropropane and HCFC-225cb (1,3-dichloro-1,1,2,2,3-pentafluoropropane).Type: GrantFiled: February 14, 2001Date of Patent: August 21, 2001Assignee: 3M Innovative Properties CompanyInventors: Richard M. Flynn, Dean S. Milbrath, John G. Owens, Daniel R. Vitcak, Hideto Yanome
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Patent number: 6235700Abstract: The invention provides azeotrope-like compositions consisting essentially of RfOC2H5, where Rf is a branched or straight chain perfluoroalkyl group having 4 carbon atoms, and an organic solvent selected from the group consisting of: straight chain, branched chain and cyclic alkanes having 6 to 8 carbon atoms; esters having 4 carbon atoms; ketones having 4 carbon atoms; disiloxanes having 6 carbon atoms; cyclic and acyclic ethers having 4 to 6 carbon atoms; chlorinated alkanes having 3 to 4 carbon atoms and chlorinated alkenes having 2 carbon atoms. The compositions are useful for cleaning, as solvents or carriers for coating and as heat transfer materials.Type: GrantFiled: October 28, 1999Date of Patent: May 22, 2001Assignee: 3M Innovative Properties CompanyInventors: Richard M. Flynn, Dean S. Milbrath, John G. Owens, Daniel R. Vitcak, Hideto Yanome
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Patent number: 6063748Abstract: The invention provides azeotrope-like compositions consisting essentially of R.sub.f OC.sub.2 H.sub.5, where R.sub.f is a branched or straight chain perfluoroalkyl group having 4 carbon atoms, and an organic solvent selected from the group consisting of: straight chain, branched chain and cyclic alkanes having 6 to 8 carbon atoms; esters having 4 carbon atoms; ketones having 4 carbon atoms; disiloxanes having 6 carbon atoms; cyclic and acyclic ethers having 4 to 6 carbon atoms; chlorinated alkanes having 3 to 4 carbon atoms and chlorinated alkenes having 2 carbon atoms. The compositions are useful for cleaning, as solvents or carriers for coating and as heat transfer materials.Type: GrantFiled: August 6, 1998Date of Patent: May 16, 2000Assignee: 3M Innovative Properties CompanyInventors: Richard M. Flynn, Dean S. Milbrath, John G. Owens, Daniel R. Vitcak, Hideto Yanome
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Patent number: 6046368Abstract: Briefly, in one aspect, this invention provides a catalytic method of preparation of primary and secondary hydrofluoroethers, the process comprising reacting a fluorinated precursor material and an alkylating agent in the presence of a Lewis acid catalyst or a mixture comprising Lewis acid and Bronsted acid catalysts.Type: GrantFiled: March 17, 1998Date of Patent: April 4, 2000Assignee: 3M Innovative Properties CompanyInventors: William M. Lamanna, Richard M. Flynn, Daniel R. Vitcak, Zai-Ming Qiu
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Patent number: 6008179Abstract: The invention provides azeotrope-like compositions consisting essentially of R.sub.f OCH.sub.3, where R.sub.f is a branched or straight chain perfluoroalkyl group having 4 carbon atoms, and one or more organic solvent(s) selected from the group consisting of: straight chain, branched chain and cyclic alkanes containing 6 to 8 carbon atoms; cyclic and acyclic ethers containing 4 to 6 carbon atoms; ketones having 3 carbon atoms; chlorinated alkanes containing 1, 3 or 4 carbon atoms; chlorinated alkenes containing 2 carbon atoms, alcohols containing 1 to 4 carbon atoms, partially fluorinated alcohols containing 2 to 3 carbon atoms, 1-bromopropane, acetonitrile, HCFC 225ca (1,1,-dichloro-2,2,3,3,3-pentafluoropropane and HCFC- 225cb (1,3-dichloro-1,1,2,2,3-pentafluoropropane).Type: GrantFiled: September 21, 1998Date of Patent: December 28, 1999Assignee: 3M Innovative Properties CompanyInventors: Richard M. Flynn, Dean S. Milbrath, John G. Owens, Daniel R. Vitcak, Hideto Yanome
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Patent number: 5827812Abstract: The invention provides azeotrope-like compositions consisting essentially of R.sub.f OCH.sub.3, where R.sub.f is a branched or straight chain perfluoroalkyl group having 4 carbon atoms, and one or more organic solvent(s) selected from the group consisting of: straight chain, branched chain and cyclic alkanes containing 6 to 8 carbon atoms; cyclic and acyclic ethers containing 4 to 6 carbon atoms; ketones having 3 carbon atoms; chlorinated alkanes containing 1, 3 or 4 carbon atoms; chlorinated alkenes containing 2 carbon atoms, alcohols containing 1 to 4 carbon atoms, partially fluorinated alcohols containing 2 to 3 carbon atoms, 1-bromopropane, acetonitrile, HCFC 225ca (1,1,-dichloro-2,2,3,3,3 pentafluoropropane and HCFC- 225cb (1,3-dichloro-1,1,2,2,3-pentafluoropropane).Type: GrantFiled: May 15, 1996Date of Patent: October 27, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventors: Richard M. Flynn, Dean S. Milbrath, John G. Owens, Daniel R. Vitcak, Hideto Yanome
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Patent number: 5814595Abstract: The invention provides azeotrope-like compositions consisting essentially of R.sub.f OC.sub.2 H.sub.5, where R.sub.f is a branched or straight chain perfluoroalkyl group having 4 carbon atoms, and an organic solvent selected from the group consisting of: straight chain, branched chain and cyclic alkanes having 6 to 8 carbon atoms; esters having 4 carbon atoms; ketones having 4 carbon atoms; disiloxanes having 6 carbon atoms; cyclic and acyclic ethers having 4 to 6 carbon atoms; chlorinated alkanes having 3 to 4 carbon atoms and chlorinated alkenes having 2 carbon atoms. The compositions are useful for cleaning, as solvents or carriers for coating and as heat transfer materials.Type: GrantFiled: May 15, 1996Date of Patent: September 29, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventors: Richard M. Flynn, Dean S. Milbrath, John G. Owens, Daniel R. Vitcak, Hideto Yanome
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Patent number: 5750797Abstract: Briefly, in one aspect, this invention provides an improved alkylation process for the preparation of primary and secondary hydrofluoroether compounds, said process comprising:(1) combining in a polar, aprotic solvent:a) a fluorinated carbonyl-containing compound;b) an anhydrous source of fluoride ion;c) a tertiary or aromatic amine; andd) optionally, an effective amount of a phase transfer catalyst;(2) contacting the resulting mixture with an alkylating agent; and(3) recovering hydrofluoroether from the resulting product mixture.Type: GrantFiled: April 15, 1996Date of Patent: May 12, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventors: Daniel R. Vitcak, Richard M. Flynn
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Patent number: 5744436Abstract: An azeotropic composition includes a perfluorinated cycloaminoether and an organic solvent.Type: GrantFiled: January 16, 1996Date of Patent: April 28, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventors: Richard M. Flynn, Daniel R. Vitcak
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Patent number: 5560861Abstract: Azeotropic compositions include a perfluorinated alkane or alkene and an organic solvent.Type: GrantFiled: December 2, 1994Date of Patent: October 1, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Richard M. Flynn, Mark W. Grenfell, Frank W. Klink, Daniel R. Vitcak
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Patent number: 5494601Abstract: Azeotropic compositions include a perfluorinated alkane or alkene and an organic solvent.Type: GrantFiled: April 1, 1993Date of Patent: February 27, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Richard M. Flynn, Daniel R. Vitcak
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Patent number: 5484489Abstract: An azeotropic composition includes a perfluorinated cycloaminoether and an organic solvent.Type: GrantFiled: January 6, 1995Date of Patent: January 16, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Richard M. Flynn, Mark W. Grenfell, Frank W. Klink, Daniel R. Vitcak
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Patent number: 5401429Abstract: An azeotropic composition includes a perfluorinated cycloaminoether and an organic solvent.Type: GrantFiled: April 1, 1993Date of Patent: March 28, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventors: Richard M. Flynn, Mark W. Grenfell, Frank W. Klink, Daniel R. Vitcak