Patents by Inventor Bernhard Seiferling
Bernhard Seiferling 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: 10782450Abstract: The invention is generally related to soft contact lenses which comprise a polyvinylalcohol-based hydrogel lens body and a durable lubricious coating thereon which are covalently attached to the polyvinylalcohol-based hydrogel lens body through 6-membered acetal rings and to a method for producing the same.Type: GrantFiled: October 25, 2017Date of Patent: September 22, 2020Assignee: Alcon Inc.Inventors: Harald Bothe, Bernhard Seiferling, Heike Arndt, Thomas Wasse, Stephan Wittmar
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Publication number: 20180113236Abstract: The invention is generally related to soft contact lenses which comprise a polyvinylalcohol-based hydrogel lens body and a durable lubricious coating thereon which are covalently attached to the polyvinylalcohol-based hydrogel lens body through 6-membered acetal rings and to a method for producing the same.Type: ApplicationFiled: October 25, 2017Publication date: April 26, 2018Inventors: Harald Bothe, Bernhard Seiferling, Heike Arndt, Thomas Wasse, Stephan Wittmar
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Patent number: 9914272Abstract: There is described a method of separating excess lens forming material from a molded ophthalmic lens, in particular a contact lens. After polymerization and/or cross-linking of a lens forming material (P) within a mold cavity (4) of a mold (1) comprising female and male mold halves (2, 3) to form an ophthalmic lens non-polymerized and/or non-cross-linked lens forming material is flushed away from the mold halves (2, 3) with a jet of a fluid flushing medium, such as, e.g., water or a solvent or an inert gas. Subsequently the molded lens is dried. In accordance with the invention the flushing is accomplished with the mold halves (2, 3) still in the closed position. There is also described an apparatus for carrying out the method.Type: GrantFiled: March 17, 2014Date of Patent: March 13, 2018Assignee: Novartis AGInventors: Axel Heinrich, Bernhard Seiferling, Peter Hagmann
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Patent number: 9765166Abstract: The present invention provides a crosslinkable prepolymer which can be used to produce crosslinked polymeric materials (or contact lenses containing the same) having a high strength and excellent durability. The present invention relates to a polyvinyl alcohol-based prepolymer containing a unit having a pendant 1,2-diol containing group and a unit having a specific crosslinkable functional group, as well as a molding using the same.Type: GrantFiled: October 17, 2013Date of Patent: September 19, 2017Assignees: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD., NOVARTIS AGInventors: Mitsuo Shibutani, Masahiro Saito, Bernhard Seiferling, Jiro Tsuchiya, Hirohiko Miura, Yasuo Matsuzawa
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Patent number: 9623589Abstract: There is described a process for manufacturing an ophthalmic lens and an apparatus for forming an ophthalmic lens, in particular a silicone hydrogel contact lens, wherein in a mold assembly a first and a second mold half (101, 102) are first arranged in an intermediate closed position in which the mold surfaces of the two mold halves are spaced apart from each other at a distance increase (d1) of preferably 1 to 100 ?m relative to a final distance (d0) in a final closed position, and wherein, during curing of the lens forming material (202), the mold surfaces (105, 106) of the mold halves (101, 102) are actively or passively moved or moving from the intermediate closed position to the final closed position, where the distance increase (d1) is 0.Type: GrantFiled: November 7, 2013Date of Patent: April 18, 2017Assignee: Novartis AGInventors: Roger Biel, Gabriela Cocora, Peter Hagmann, Uwe Haken, William Jordan Hall, Axel Heinrich, Günter Lässig, Honghui Lu, Deborah J. Mulcahy, Carlton Pope, Daryl Reece, Bernhard Seiferling
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Publication number: 20160264701Abstract: The present invention provides a crosslinkable prepolymer which can be used to produce crosslinked polymeric materials (or contact lenses containing the same) having a high strength and excellent durability. The present invention relates to a polyvinyl alcohol-based prepolymer containing a unit having a pendant 1,2-diol containing group and a unit having a specific crosslinkable functional group, as well as a molding using the same.Type: ApplicationFiled: October 17, 2013Publication date: September 15, 2016Applicants: THE NIPPON SYNTHETIC CHEMICAL INDUSTRY CO., LTD., NOVARTIS AGInventors: Mitsuo SHIBUTANI, Masahiro SAITO, Bernhard SEIFERLING, Jiro TSUCHIYA, Hirohiko MIURA, Yasuo MATSUZAWA
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Publication number: 20140199425Abstract: There is described a method of separating excess lens forming material from a molded ophthalmic lens, in particular a contact lens. After polymerization and/or cross-linking of a lens forming material (P) within a mold cavity (4) of a mold (1) comprising female and male mold halves (2, 3) to form an ophthalmic lens non-polymerized and/or non-cross-linked lens forming material is flushed away from the mold halves (2, 3) with a jet of a fluid flushing medium, such as, e.g., water or a solvent or an inert gas. Subsequently the molded lens is dried. In accordance with the invention the flushing is accomplished with the mold halves (2, 3) still in the closed position. There is also described an apparatus for carrying out the method.Type: ApplicationFiled: March 17, 2014Publication date: July 17, 2014Applicant: Novartis AGInventors: Axel Heinrich, Bernhard Seiferling, Peter Hagmann
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Patent number: 8673187Abstract: There is described a method of separating excess lens forming material from a molded ophthalmic lens, in particular a contact lens. After polymerization and/or cross-linking of a lens forming material (P) within a mold cavity (4) of a mold (1) comprising female and male mold halves (2, 3) to form an ophthalmic lens non-polymerized and/or non-cross-linked lens forming material is flushed away from the mold halves (2, 3) with a jet of a fluid flushing medium, such as, e.g., water or a solvent or an inert gas. Subsequently the molded lens is dried. In accordance with the invention the flushing is accomplished with the mold halves (2, 3) still in the closed position. There is also described an apparatus for carrying out the method.Type: GrantFiled: December 16, 2010Date of Patent: March 18, 2014Assignee: Novartis AGInventors: Axel Heinrich, Bernhard Seiferling, Peter Hagmann
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Publication number: 20140072665Abstract: There is described a process for manufacturing an ophthalmic lens and an apparatus for forming an ophthalmic lens, in particular a silicone hydrogel contact lens, wherein in a mold assembly a first and a second mold half (101, 102) are first arranged in an intermediate closed position in which the mold surfaces of the two mold halves are spaced apart from each other at a distance increase (d1) of preferably 1 to 100 ?m relative to a final distance (d0) in a final closed position, and wherein, during curing of the lens forming material (202), the mold surfaces (105, 106) of the mold halves (101, 102) are actively or passively moved or moving from the intermediate closed position to the final closed position, where the distance increase (d1) is 0.Type: ApplicationFiled: November 7, 2013Publication date: March 13, 2014Applicant: Novartis AGInventors: Roger Biel, Gabriele Cocora, Peter Hagmann, Uwe Haken, William Jordan Hall, Axel Heinrich, Günter Lässig, Honghui Lu, Deborah J. Mulcahy, Carlton Pope, Daryl Reece, Bernhard Seiferling
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Patent number: 8618187Abstract: There is described a composition for forming an contact lens, in particular for forming a silicone hydrogel contact lens, comprising at least one first vinylic monomer or macromer having one first ethylenically unsaturated group and at least one second vinylic monomer or macromer having one second ethylenically unsaturated group, wherein the first and second ethylenically unsaturated groups are different from each other and wherein the composition further comprises a crosslinker with at least two ethylenically unsaturated (polymerizable) groups with a selected kinetic copolymerization parameter r1 of less than 1.0 relative to one of the first and second ethylenically unsaturated (polymerizable) groups as defined above.Type: GrantFiled: March 29, 2012Date of Patent: December 31, 2013Assignee: Novartis AGInventors: Bernhard Seiferling, Thomas Schmidt, Jürgen Vogt
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Patent number: 8580163Abstract: There is described a process for manufacturing an ophthalmic lens and an apparatus for forming an ophthalmic lens, in particular a silicone hydrogel contact lens, wherein in a mold assembly a first and a second mold half (101, 102) are first arranged in an intermediate closed position in which the mold surfaces of the two mold halves are spaced apart from each other at a distance increase (d1) of preferably 1 to 100 ?m relative to a final distance (d0) in a final closed position, and wherein, during curing of the lens forming material (202), the mold surfaces (105, 106) of the mold halves (101, 102) are actively or passively moved or moving from the intermediate closed position to the final closed position, where the distance increase (d1) is 0.Type: GrantFiled: October 14, 2010Date of Patent: November 12, 2013Assignee: Novartis AGInventors: Roger Biel, Gabriela Cocora, Peter Hagmann, Uwe Haken, Jordan Hall, Axel Heinrich, Günter Lässig, Honghui Lu, Deborah J. Mulcahy, Carlton Pope, Daryl Reece, Bernhard Seiferling
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Patent number: 8440735Abstract: The instant invention pertains to a method and a fluid composition for producing contact lenses with improved lens quality and with increased product yield. The method of the invention involves adding a phospholipid into a fluid composition including a lens-forming material in an amount sufficient to reduce an averaged mold separation force by at least about 40% in comparison with that without the phospholipids.Type: GrantFiled: July 13, 2010Date of Patent: May 14, 2013Assignee: Novartis AGInventors: John Dallas Pruitt, Lynn Cook Winterton, Bernhard Seiferling, Jüergen Vogt, Harald Bothe
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Patent number: 8398903Abstract: The invention is concerned with the problem that with known plastic casting molds, especially those of polypropylene, the lenses produced with these molds have a slippery surface. The invention solves this problem through the use of polymers which are notable for their very low oxygen permeability.Type: GrantFiled: October 15, 2010Date of Patent: March 19, 2013Assignee: Novartis AGInventors: Peter Hagmann, Axel Heinrich, Willi Hoerner, Robert Allen Janssen, John Martin Lally, Robert Earl Szokolay, Bernhard Seiferling
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Patent number: 8383744Abstract: The invention provide a class of actinically-crosslinkable silicone-containing prepolymers which comprise dangling polysiloxane chains each having a terminal ethylenically-unsaturated group and are obtained in a one-step of RAFT polymerization of a reactive mixture comprising a polysiloxane crosslinker, a hydrophilic vinylic monomer, a RAFT agent, and a free-radical initiator. The present invention is also related to silicone hydrogel contact lenses made from a prepolymer of the invention and methods for making the contact lenses in a cost-effective way and with high consistency and high fidelity to the original lens design.Type: GrantFiled: May 20, 2010Date of Patent: February 26, 2013Assignee: Novartis AGInventors: Justyna Justynska, Bernhard Seiferling
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Publication number: 20120252921Abstract: There is described a composition for forming an contact lens, in particular for forming a silicone hydrogel contact lens, comprising at least one first vinylic monomer or macromer having one first ethylenically unsaturated group and at least one second vinylic monomer or macromer having one second ethylenically unsaturated group, wherein the first and second ethylenically unsaturated groups are different from each other and wherein the composition further comprises a crosslinker with at least two ethylenically unsaturated (polymerizable) groups with a selected kinetic copolymerization parameter r1 of less than 1.0 relative to one of the first and second ethylenically unsaturated (polymerizable) groups as defined above.Type: ApplicationFiled: March 29, 2012Publication date: October 4, 2012Inventors: Bernhard Seiferling, Thomas Schmidt, Jürgen Vogt
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Patent number: 8158192Abstract: The invention relates to a process for the manufacture of a hydrophilic coating on a biomedical article, which comprises treating the biomedical article for a time period of ?5 minutes with a solution of an organic solvent comprising a polyanionic compound with a number average molecular weight Mn of >5000, wherein the solution comprises less than 10% by weight of water, and wherein the solution is devoid of a cationic polymer. The coated biomedical articles obtainable by the process of the invention have desirable characteristics regarding adherence to the substrate, durability, hydrophilicity, wettability, biocompatibility and permeability and are thus especially useful in the field of ophthalmic devices.Type: GrantFiled: December 19, 2007Date of Patent: April 17, 2012Assignee: Novartis AGInventors: Harald Bothe, Yasuo Matsuzawa, Bernhard Seiferling, Katharina Schmid, Heike Arndt
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Publication number: 20120038880Abstract: The present invention relates to a process for effectively curing a lens forming material to form a lens, preferably a contact lens. In particular the present invention relates to a modulated UV/VIS irradiation curing process, preferably using UV light, wherein the lens forming material is first cured with a very high intensity for a first short time period and then with a significantly lower intensity for a significantly longer time period.Type: ApplicationFiled: August 9, 2011Publication date: February 16, 2012Inventors: Bernhard Seiferling, Jürgen Vogt, Christine Irrgang Vogt, Arturo Norberto Medina
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Patent number: 8092724Abstract: The instant invention pertains to a method and a fluid composition for producing contact lenses with improved lens quality and with increased product yield. The method of the invention involves adding a phospholipid into a fluid composition including a lens-forming material in an amount sufficient to reduce an averaged mold separation force by at least about 40% in comparison with that without the phospholipids.Type: GrantFiled: July 13, 2010Date of Patent: January 10, 2012Assignee: Novartis AGInventors: John Dallas Pruitt, Lynn Cook Winterton, Bernhard Seiferling, Jüergen Vogt, Harald Bothe
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Patent number: 8088313Abstract: A measured amount of a material that is crosslinkable by impingement of a suitable form of energy, especially UV light, is introduced into a two-part mould of which the cavity determines the shape of a moulding to be produced. The two mould halves are held a small distance from one another so that a thin annular gap is formed between them, which gap is in communication with the mould cavity and through which gap excess material can escape. The crosslinking is triggered by impingement of the selected form of energy, the impingement being spatially restricted to the cavity by suitable masking so that material disposed outside the mould cavity is not crosslinked. In that manner mouldings are obtained that do not require subsequent mechanical processing, and the mould is reusable. The process is especially, but not, however, exclusively, suitable for the manufacture of contact lenses.Type: GrantFiled: June 9, 2004Date of Patent: January 3, 2012Assignee: Novartis AGInventors: Peter Hagmann, Sharla Borghorst, John Golby, Peter Herbrechtsmeier, Otto Kretzschmar, Bernhard Seiferling, Norbert Söllner, Beat Müller
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Publication number: 20110147959Abstract: There is described a method of separating excess lens forming material from a molded ophthalmic lens, in particular a contact lens. After polymerization and/or cross-linking of a lens forming material (P) within a mold cavity (4) of a mold (1) comprising female and male mold halves (2, 3) to form an ophthalmic lens non-polymerized and/or non-cross-linked lens forming material is flushed away from the mold halves (2, 3) with a jet of a fluid flushing medium, such as, e.g., water or a solvent or an inert gas. Subsequently the molded lens is dried. In accordance with the invention the flushing is accomplished with the mold halves (2, 3) still in the closed position. There is also described an apparatus for carrying out the method.Type: ApplicationFiled: December 16, 2010Publication date: June 23, 2011Inventors: Axel Heinrich, Bernhard Seiferling, Peter Hagmann