Patents by Inventor Larry A. Last
Larry A. Last 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: 11267922Abstract: There is provided a curable composition comprising a fluorinated block copolymer having (a) at least one A block, wherein the A block is a semi-crystalline segment comprising repeating divalent monomeric units derived from at least a fluorinated monomer; and (b) at least one B block, wherein the B block is a segment comprising repeating divalent monomeric units that comprises at least a fluorinated monomer and a nitrile-containing cure-site monomer.Type: GrantFiled: January 12, 2018Date of Patent: March 8, 2022Assignee: 3M Innovative Properties CompanyInventors: Michael H. Mitchell, Denis Duchesne, Tatsuo Fukushi, Larry A. Last, Peter J. Scott, Karl D. Weilandt
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Patent number: 11261280Abstract: Described herein is a millable fluorinated block copolymer having (a) at least one A block, wherein the A block is a semi-crystalline segment comprising repeating divalent monomeric units derived from at least TFE, HFP and VDF; (b) at least one B block, wherein the B block is a segment comprising repeating divalent monomeric units derived from at least HFP and VDF; and (c) a bisolefin monomer, wherein at least (i) the semi-crystalline segment of the A block comprises repeating divalent monomeric units derived from TFE, HFP, VDF, and the bisolefin monomer, (ii) the segment of the B block comprises repeating divalent monomeric units derived from HFP, VDF, and the bisolefin monomer, or (iii) a combination thereof; and wherein the millable fluorinated block copolymer has a modulus of 0.1 to 2.5 MPa at 100° C.Type: GrantFiled: January 12, 2018Date of Patent: March 1, 2022Assignee: 3M Innovative Properties CompanyInventors: Michael H. Mitchell, Denis Duchesne, Tatsuo Fukushi, Larry A. Last, Peter J. Scott, Karl D. Weilandt
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Publication number: 20210284780Abstract: Described herein is a millable fluorinated block copolymer having (a) at least one A block, wherein the A block is a semi-crystalline segment comprising repeating divalent monomeric units derived from at least TFE, HFP and VDF; (b) at least one B block, wherein the B block is a segment comprising repeating dilvalent monomeric units derived from at least HFP and VDF; and (c) a bisolefin monomer, wherein at least (i) the semi-crystalline segment of the A block comprises repeating divalent monomeric units derived from TFE, HFP, VDF, and the bisolefin monomer, (ii) the segment of the B block comprises repeating divalent monomeric units derived from HFP, VDF, and the bisolefin monomer, or (iii) a combination thereof; and wherein the millable fluorinated block copolymer has a modulus of 0.1 to 2.5 MPa at 100° C.Type: ApplicationFiled: January 12, 2018Publication date: September 16, 2021Inventors: Michael H. Mitchell, Denis Duchesne, Tatsuo Fukushi, Larry A. Last, Peter J. Scott, Karl D. Weilandt
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Patent number: 10927235Abstract: Described herein is a composition comprising: a fluorinated thermosetting plastic comprising repeating divalent monomeric units derived from TFE, HFP and VDF and further comprising a least 0.1-1% by weight iodine endgroups, wherein the fluorinated thermosetting plastic has an MFI greater than 5 g/10 min at 265° C. and 5 kg; and a curing agent.Type: GrantFiled: July 11, 2016Date of Patent: February 23, 2021Assignee: 3M Innovative Properties CompanyInventors: Tatsuo Fukushi, Larry A. Last, Michael H. Mitchell
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Patent number: 10723868Abstract: A polymer composition includes a non-fluorinated, thermoplastic polymer and a minor amount of a fluoropolymer combined with the non-fluorinated polymer. A polymer processing additive composition that includes a fluoropolymer and a polymer processing additive synergist is also disclosed. The fluoropolymer includes diads represented by formula —CF2-CF(R)—CH(R?)—CF(R?)— in a range from about 23 mole percent to about 50 mole percent. Each R is independently —CF3, —Rf, or —ORf, each R? and R? are independently H, F, CF3, or —Rf, and each Rf is independently a perfluoroalkyl group having from 1 to 12 carbon atoms and optionally interrupted by one or more —O— groups. A method of reducing melt defects during the extrusion of a polymer is also disclosed.Type: GrantFiled: October 12, 2016Date of Patent: July 28, 2020Assignee: 3M Innovative Properties CompanyInventors: Claude Lavallée, Peter J. Scott, Denis Duchesne, Dale E. Hutchens, Larry A. Last, Kirsten J. Fronek, Thomas J. Blong
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Patent number: 10590224Abstract: Described herein is a millable fluorinated block copolymer having at least one A block and at least one B block, wherein the A block is a semi-crystalline segment comprising repeating divalent monomeric units derived from TFE, HFP and VDF; and the B block is a segment comprising repeating dilvalent monomeric units derived from HFP and VDF; and wherein the millable fluorinated block copolymer has a modulus of 0.1 to 2.5 MPa at 100° C.Type: GrantFiled: July 11, 2016Date of Patent: March 17, 2020Assignee: 3M Innovative Properties CompanyInventors: Michael H. Mitchell, Denis Duchesne, Tatsuo Fukushi, Werner M. A. Grootaert, Larry A. Last, Peter J. Scott, Karl D. Weilandt
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Publication number: 20190352444Abstract: There is provided a curable composition comprising a fluorinated block copolymer having (a) at least one A block, wherein the A block is a semi-crystalline segment comprising repeating divalent monomeric units derived from at least a fluorinated monomer; and (b) at least one B block, wherein the B block is a segment comprising repeating divalent monomeric units that comprises at least a fluorinated monomer and a nitrile-containing cure-site monomer.Type: ApplicationFiled: January 12, 2018Publication date: November 21, 2019Inventors: Michael H. Mitchell, Denis Duchesne, Tatsuo Fukushi, Larry A. Last, Peter J. Scott, Karl D. Weilandt
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Publication number: 20180312673Abstract: A polymer composition includes a non-fluorinated, thermoplastic polymer and a minor amount of a fluoropolymer combined with the non-fluorinated polymer. A polymer processing additive composition that includes a fluoropolymer and a polymer processing additive synergist is also disclosed. The fluoropolymer includes diads represented by formula —CF2-CF(R)—CH(R?)—CF(R?)— in a range from about 23 mole percent to about 50 mole percent. Each R is independently —CF3, —Rf, or —ORf, each R? and R? are independently H, F, CF3, or —Rf, and each Rf is independently a perfluoroalkyl group having from 1 to 12 carbon atoms and optionally interrupted by one or more —O— groups. A method of reducing melt defects during the extrusion of a polymer is also disclosed.Type: ApplicationFiled: October 12, 2016Publication date: November 1, 2018Inventors: Claude Lavallée, Peter J. Scott, Denis Duchesne, Dale E. Hutchens, Larry A. Last, Kirsten J. Fronek, Thomas J. Blong
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Patent number: 10093761Abstract: Described herein is a composition having a fluoropolymer derived from the polymerization of a monomer and a sulfinate-containing molecule, wherein the sulfinate-containing molecule is selected from the group consisting of Formula (I), Formula (II); and combinations thereof, wherein X1, X2, and X3 are each independently selected from H, F, Cl, a C1 to C4 alkyl group, and a C1 to C4 fluorinated alkyl group; R is a linking group; Z1 and Z2 are independently selected from F, CF3, and a perfluoroalkyl group; R1 and R2 are end-groups; p is 0 or 1; m is at least 1; and M is a cation. Also disclosed are methods of making and articles thereof.Type: GrantFiled: December 16, 2011Date of Patent: October 9, 2018Assignee: 3M Innovative Properties CompanyInventors: Gregg D. Dahlke, Denis Duchesne, Tatsuo Fukushi, Werner M. Grootaert, Miguel A. Guerra, Harald Kaspar, Larry A. Last, Peter J. Scott, Zai-Ming Qiu
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Publication number: 20180208743Abstract: Described herein is a composition comprising: a fluorinated thermosetting plastic comprising repeating divalent monomeric units derived from TFE, HFP and VDF and further comprising a least 0.1-1% by weight iodine endgroups, wherein the fluorinated thermosetting plastic has an MFI greater than 5 g/10 min at 265° C. and 5 kg; and a curing agent.Type: ApplicationFiled: July 11, 2016Publication date: July 26, 2018Inventors: Tatsuo Fukushi, Larry A. Last, Michael H. Mitchell
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Publication number: 20180194888Abstract: Described herein is a millable fluorinated block copolymer having at least one A block and at least one B block, wherein the A block is a semi-crystalline segment comprising repeating divalent monomeric units derived from TFE, HFP and VDF; and the B block is a segment comprising repeating dilvalent monomeric units derived from HFP and VDF; and wherein the millable fluorinated block copolymer has a modulus of 0.1 to 2.5 MPa at 100° C.Type: ApplicationFiled: July 11, 2016Publication date: July 12, 2018Inventors: Michael H. MITCHELL, Denis DUCHESNE, Tatsuo FUKUSHI, Werner M.A. GROOTAERT, Larry A. LAST, Peter J. SCOTT, Karl D. WEILANDT
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Patent number: 9212279Abstract: There are provided microemulsions derived from compositions containing oligomeric fluorosulfinic compounds and/or ethylenically unsaturated, polymerizable monomeric fluorosulfinic compounds and to their uses in (co)polymerization processes in aqueous emulsion of fluorinated monomers.Type: GrantFiled: December 13, 2011Date of Patent: December 15, 2015Assignee: 3M INNOVATIVE PROPERTIES COMPANYInventors: Tatsuo Fukushi, Gregg D. Dahlke, Denis Duchesne, Werner M.A. Grootaert, Miguel A. Guerra, Larry A. Last, Peter J. Scott, Zai-Ming Qiu
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Patent number: 8835551Abstract: Iodine containing amorphous fluoropolymers having at least one fluoropolymer with a cure site, where the fluoropolymer has a Mooney viscosity of 2 or less (ML 1+10) at 100° C. according to ASTM D1646, and a peel strength to a roll mill of 10 dN/cm or less and methods for making such iodine containing amorphous fluoropolymers are described. Articles derived from the cured product of such iodine containing amorphous fluoropolymers are also described. Solutions, dispersions and coatings derived from such iodine containing amorphous fluoropolymers are also described.Type: GrantFiled: September 11, 2008Date of Patent: September 16, 2014Assignee: 3M Innovative Properties CompanyInventors: Tatsuo Fukushi, Peter J. Scott, Cynthia N. Ferguson, Werner M. A. Grootaert, Denis Duchesne, Yeng Moua, Larry A. Last, Terri A. Shefelbine, Luke M. B. Rodgers
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Publication number: 20140005333Abstract: There are provided microemulsions derived from compositions containing oligomeric fluorosulfinic compounds and/or ethylenically unsaturated, polymerizable monomeric fluorosulfinic compounds and to their uses in (co)polymerization processes in aqueous emulsion of fluorinated monomers.Type: ApplicationFiled: December 13, 2011Publication date: January 2, 2014Applicant: 3M INNOVATIVE PROPERTIES COMPANYInventors: Tatsuo Fukushi, Gregg D. Dahlke, Denis Duchesne, Werner M.A. Grootaert, Miguel A. Guerra, Larry A. Last, Peter J. Scott, Zai-Ming Qiu
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Publication number: 20130251930Abstract: Described herein is a composition having a fluoropolymer derived from the polymerization of a monomer and a sulfinate-containing molecule, wherein the sulfinate-containing molecule is selected from the group consisting of Formula (I), Formula (II); and combinations thereof, wherein X1, X2, and X3 are each independently selected from H, F, Cl, a C1 to C4 alkyl group, and a C1 to C4 fluorinated alkyl group; R is a linking group; Z1 and Z2 are independently selected from F, CF3, and a perfluoroalkyl group; R1 and R2 are end-groups; p is 0 or 1; m is at least 1; and M is a cation. Also disclosed are methods of making and articles thereof.Type: ApplicationFiled: December 16, 2011Publication date: September 26, 2013Inventors: Gregg D. Dahlke, Denis Duchesne, Tatsuo Fukushi, Werner M. Grootaert, Miguel A. Guerra, Harald Kaspar, Larry A. Last, Peter J. Scott, Zai-Ming Qiu
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Publication number: 20100286329Abstract: Iodine containing amorphous fluoropolymers having at least one fluoropolymer with a cure site, where the fluoropolymer has a Mooney viscosity of 2 or less (ML 1+10) at 100° C. according to ASTM D1646, and a peel strength to a roll mill of 10 dN/cm or less and methods for making such iodine containing amorphous fluoropolymers are described. Articles derived from the cured product of such iodine containing amorphous fluoropolymers are also described. Solutions, dispersions and coatings derived from such iodine containing amorphous fluoropolymers are also described.Type: ApplicationFiled: September 11, 2008Publication date: November 11, 2010Inventors: Tatsuo Fukushi, Peter J. Scott, Cynthia N. Ferguson, Werner M.A. Grootaert, Denis Duchesne, Yeng Moua, Larry A. Last, Terri A. Shefelbine, Luke M.B. Rodgers
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Patent number: 5275260Abstract: A dual mode drum brake assembly having an improved duo-servo parking and emergency brake lever mechanism includes a pivot lever pivotally supported relative to a first brake shoe and operatively coupled to exert an outward force on the first brake shoe when the parking brake is actuated. According to one feature of the invention, a hold down assembly extends through an aperture formed in a web of the first brake shoe, and through an aperture formed in the pivot lever to secure the first brake shoe to a backing plate and to pivotally connect the pivot lever to the web. According to another feature of the invention, an adjuster lever of a first strut member is pivotally supported on the first brake shoe, and the pivot lever is pivotally supported on the first brake shoe generally intermediate the first strut member and a second strut member.Type: GrantFiled: December 24, 1991Date of Patent: January 4, 1994Assignee: Kelsey-Hayes CompanyInventors: Anthony C. Evans, Larry Last