Patents by Inventor Christopher Weikart

Christopher Weikart 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).

  • Publication number: 20200171244
    Abstract: A liquid formulation of an ophthalmic drug in a pre-filled pharmaceutical package, for example a syringe, cartridge, vial or any other vessel made in part or in whole of a thermoplastic polymer, coated on the interior with a tie coating or layer, a barrier coating or layer, a pH protective coating or layer, and optionally a lubricity coating or layer. A blister, a pouch, a bag, a tray or a tub may encompass as a secondary packaging the syringe, vial, cartridge, tube or any other vessel. The package is suitable for sterilization (e.g., surface and/or terminal sterilization) with sterilization gas residuals being minimal and/or lower than required by ISO 10993-7; and/or the stability of the ophthalmic drug is maintained, during a prolonged time period following the sterilization. The sterilization gas may be EO, propylene oxide, chlorine dioxide, nitrogen dioxide, or vaporized hydrogen peroxide (VHP), among others.
    Type: Application
    Filed: May 24, 2018
    Publication date: June 4, 2020
    Inventors: Christopher Weikart, Murray Stephen Bennett, Jean-Pierre Giraud
  • Patent number: 10577154
    Abstract: A method for providing a passivation layer or pH protective coating on a substrate surface by PECVD is provided, the method comprising generating a plasma from a gaseous reactant comprising polymerizing gases. The lubricity, passivation, pH protective, hydrophobicity, and/or barrier properties of the passivation layer or pH protective coating are set by setting the ratio of the O2 to the organosilicon precursor in the precursor feed, and/or by setting the electric power used for generating the plasma. In particular, a passivation layer or pH protective coating made by the method is provided. Pharmaceutical packages coated by the method and the use of such packages protecting composition contained in the vessel against mechanical and/or chemical effects of the surface of the package without a passivation layer or pH protective coating material are also provided.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: March 3, 2020
    Assignee: SIO2 MEDICAL PRODUCTS, INC.
    Inventors: John T. Felts, Thomas E. Fisk, Robert S. Abrams, John Ferguson, Jonathan R. Freedman, Robert J. Pangborn, Peter J. Sagona, Christopher Weikart
  • Publication number: 20200046606
    Abstract: An article or vessel is described including a vessel surface and a coating set comprising at least one tie coating, at least one barrier coating, and at least one pH protective coating. For example, the coating set can comprise a tie coating, a barrier coating, a pH protective coating and a second barrier coating; and in the presence of a fluid composition, the fluid contacting surface is the barrier coating or layer. The respective coatings can be applied by PECVD of a polysiloxane precursor. Such vessels can have a coated interior portion containing a fluid with a pH of 4 to 8. The barrier coating prevents oxygen from penetrating into the thermoplastic vessel, and the tie coating and pH protective coating together protect the barrier layer from the contents of the vessel. The second barrier coating is comparable to glass surface if needed.
    Type: Application
    Filed: July 9, 2018
    Publication date: February 13, 2020
    Inventors: Christopher Weikart, Becky L. Clark, Adam Stevenson, John T. Felts
  • Patent number: 10537494
    Abstract: An article is described including an article surface and a coating set comprising an optional tie coating or layer, a barrier coating or layer, and a pH protective layer. The respective coatings or layers can be applied by chemical vapor deposition of a polysiloxane or polysilazane precursor in the presence of oxygen. Examples of such an article are a thermoplastic syringe, vial, or blood collection tube with a coated interior portion containing a pharmaceutical preparation or other fluid with a pH of 4 to 8, alternatively 5 to 9. The barrier coating or layer prevents oxygen from penetrating into the thermoplastic syringe, vial, or blood collection tube. The tie coating or layer, if present, and the pH protective coating or layer protect the barrier layer from the contents of the syringe, vial, or blood collection tube.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: January 21, 2020
    Assignee: SIO2 MEDICAL PRODUCTS, INC.
    Inventors: Christopher Weikart, Becky L. Clark, Adam Stevenson, John T. Felts
  • Publication number: 20190358123
    Abstract: A blood sample collection tube and other vessels are described including an article surface and a coating set comprising a tie coating or layer of SiOxCy or SiNxCy applied to the article surface, a barrier coating or layer of SiOx, and a pH protective layer of SiOxCy or SiNxCy. The vessels optionally contain a fluid with a pH of 4 to 8, alternatively 5 to 9. The barrier coating or layer prevents oxygen from penetrating into the thermoplastic vessel, and the tie coating or layer and pH protective coating or layer together protect the barrier layer from the contents of the vessel.
    Type: Application
    Filed: June 21, 2019
    Publication date: November 28, 2019
    Inventors: Christopher Weikart, Becky L. Clark, Adam Stevenson, John T. Felts
  • Publication number: 20190344018
    Abstract: A method and apparatus for plasma modifying a workpiece such as a syringe barrel, cartridge barrel, vial, or blood tube is described. Plasma is provided within the lumen of the workpiece. The plasma is provided under conditions effective for plasma modification of a surface of the workpiece. A magnetic field is provided in at least a portion of the lumen. The magnetic field has an orientation and field strength effective to improve the uniformity of plasma modification of the interior surface of the generally cylindrical wall. A vessel made according to the process or using the apparatus described above. A pharmaceutical package comprising the syringe barrel or vial containing a pharmaceutical preparation, secured with a closure.
    Type: Application
    Filed: July 24, 2019
    Publication date: November 14, 2019
    Inventors: Christopher Weikart, Becky L. Clark, Adam Stevenson, Robert S. Abrams, John Belfance
  • Publication number: 20190233167
    Abstract: A method for providing a passivation layer or pH protective coating on a substrate surface by PECVD is provided, the method comprising generating a plasma from a gaseous reactant comprising polymerizing gases. The lubricity, passivation, pH protective, hydrophobicity, and/or barrier properties of the passivation layer or pH protective coating are set by setting the ratio of the O2 to the organosilicon precursor in the precursor feed, and/or by setting the electric power used for generating the plasma. In particular, a passivation layer or pH protective coating made by the method is provided. Pharmaceutical packages coated by the method and the use of such packages protecting composition contained in the vessel against mechanical and/or chemical effects of the surface of the package without a passivation layer or pH protective coating material are also provided.
    Type: Application
    Filed: December 19, 2018
    Publication date: August 1, 2019
    Inventors: John T. Felts, Thomas E. Fisk, Robert S. Abrams, John Ferguson, Jonathan R. Freedman, Robert J. Pangborn, Peter J. Sagona, Christopher Weikart
  • Patent number: 10363370
    Abstract: A method and apparatus for plasma modifying a workpiece such as a syringe barrel, cartridge barrel, vial, or blood tube is described. Plasma is provided within the lumen of the workpiece. The plasma is provided under conditions effective for plasma modification of a surface of the workpiece. A magnetic field is provided in at least a portion of the lumen. The magnetic field has an orientation and field strength effective to improve the uniformity of plasma modification of the interior surface of the generally cylindrical wall. A vessel made according to the process or using the apparatus described above. A pharmaceutical package comprising the syringe barrel or vial containing a pharmaceutical preparation, secured with a closure.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: July 30, 2019
    Assignee: SiO2 Medical Products, Inc.
    Inventors: Christopher Weikart, Becky L. Clark, Adam Stevenson, Robert S. Abrams, John Belfance
  • Publication number: 20190133882
    Abstract: A vessel has an interior surface facing a lumen. The interior surface includes a tie coating or layer, a barrier coating or layer, and a pH protective coating or layer. The tie coating or layer can comprise SiOxCy or SiNxCy, where x is from about 0.5 to about 2.4 and y is from about 0.6 to about 3. The barrier coating or layer can comprise SiOx, wherein x is from 1.5 to 2.9. The barrier coating or layer reduces the ingress of atmospheric gas into the lumen. The pH protective coating or layer can comprise SiOxCy or SiNxCy, as well. In an embodiment, in the presence of a fluid composition contained in the lumen and having a pH between 5 and 9, the calculated shelf life of the package can be more than six months at a storage temperature of 4° C.
    Type: Application
    Filed: September 4, 2018
    Publication date: May 9, 2019
    Inventors: Christopher Weikart, Becky L. Clark, Adam Stevenson, John T. Felts
  • Patent number: 10201660
    Abstract: A method and apparatus for plasma modifying a workpiece such as a medical barrel, medical barrel, vial, or blood tube is described. Plasma is provided within the lumen of the workpiece. The plasma is provided under conditions effective for plasma modification of a surface of the workpiece. A magnetic field is provided in at least a portion of the lumen. The magnetic field has an orientation and field strength effective to improve the uniformity of plasma modification of the generally cylindrical interior surface 16 of the generally cylindrical interior surface 16.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: February 12, 2019
    Assignee: SiO2 Medical Products, Inc.
    Inventors: Christopher Weikart, Becky L. Clark, Adam Stevenson, Robert S. Abrams, John Belfance, Joseph A. Jones, Thomas E. Fisk
  • Patent number: 10189603
    Abstract: A method for providing a passivation layer or pH protective coating on a substrate surface by PECVD is provided, the method comprising generating a plasma from a gaseous reactant comprising polymerizing gases. The lubricity, passivation, pH protective, hydrophobicity, and/or barrier properties of the passivation layer or pH protective coating are set by setting the ratio of the O2 to the organosilicon precursor in the precursor feed, and/or by setting the electric power used for generating the plasma. In particular, a passivation layer or pH protective coating made by the method is provided. Pharmaceutical packages coated by the method and the use of such packages protecting a composition contained in the vessel against mechanical and/or chemical effects of the surface of the package without a passivation layer or pH protective coating material are also provided.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: January 29, 2019
    Assignee: SIO2 MEDICAL PRODUCTS, INC.
    Inventors: John T. Felts, Thomas E. Fisk, Robert S. Abrams, John Ferguson, Jonathan R. Freedman, Robert J. Pangborn, Peter J. Sagona, Christopher Weikart
  • Publication number: 20190015561
    Abstract: Processing an evacuated blood sample collection tube or other vessel by plasma enhanced chemical vapor deposition to apply a tie coating or layer (289), a barrier coating or layer (288), and optionally one or more additional coatings or layers. The tie coating or layer of SiOxCy is applied under partial vacuum and, while maintaining the partial vacuum unbroken in the lumen, the barrier coating or layer is applied. Then optionally, while maintaining the partial vacuum unbroken in the lumen, a pH protective coating or layer of SiOxCy can be applied. As a result of this processing, a coated vessel is produced having a lower gas permeation rate constant into the lumen than a corresponding vessel made by the same process except breaking the partial vacuum in the lumen between applying the tie coating or layer and applying the barrier coating or layer. Retention features are also described for keeping the vessels stoppered during exposure to reduced ambient pressure.
    Type: Application
    Filed: August 18, 2016
    Publication date: January 17, 2019
    Inventors: Matthew Wills, Ahmad Taha, Christopher Weikart
  • Publication number: 20190000919
    Abstract: A pre-filled pharmaceutical package comprising a liquid formulation of a VEGF-antagonist, for example Ranibizumab, in a pre-filled pharmaceutical package, for example a syringe, cartridge, or vial, made in part or in whole of a thermoplastic polymer, coated on the interior with a tie coating or layer, a barrier coating or layer, a pH protective coating or layer, and optionally a lubricity coating or layer. Stability performance of the VEGF-antagonist packaged in the coated COP vessel comparable to or better than glass was obtained.
    Type: Application
    Filed: November 18, 2016
    Publication date: January 3, 2019
    Inventors: Carsten Brockmeyer, Christopher Weikart, Murray Stephen Bennett, Jean-Pierre Giraud, Thomas Strungmann
  • Publication number: 20180325728
    Abstract: A liquid formulation of an ophthalmic drug in a pharmaceutical package, for example a syringe, cartridge, or vial, made in part or in whole of a thermoplastic polymer, coated on the interior with a tie coating or layer, a barrier coating or layer, a pH protective coating or layer, and optionally a lubricity coating or layer.
    Type: Application
    Filed: November 18, 2016
    Publication date: November 15, 2018
    Inventors: Christopher Weikart, Murray Stephen Bennett, Jean-Pierre Giraud
  • Publication number: 20180273269
    Abstract: A container includes an external package and a sealed flexible bag, adapted to hold liquid contents, retained within the external package. The bag is made from a polymer film, which prior to being formed into a bag, was a two dimensional film to which was applied a PECVD SiOx coating.
    Type: Application
    Filed: May 29, 2018
    Publication date: September 27, 2018
    Inventors: Peter J. Sagona, Christopher Weikart
  • Publication number: 20180221243
    Abstract: An article is described including an article surface and a coating set comprising an optional tie coating or layer, a barrier coating or layer, and a pH protective layer. The respective coatings or layers can be applied by chemical vapor deposition of a polysiloxane or polysilazane precursor in the presence of oxygen. Examples of such an article are a thermoplastic syringe, vial, or blood collection tube with a coated interior portion containing a pharmaceutical preparation or other fluid with a pH of 4 to 8, alternatively 5 to 9. The barrier coating or layer prevents oxygen from penetrating into the thermoplastic syringe, vial, or blood collection tube. The tie coating or layer, if present, and the pH protective coating or layer protect the barrier layer from the contents of the syringe, vial, or blood collection tube.
    Type: Application
    Filed: February 23, 2018
    Publication date: August 9, 2018
    Inventors: Christopher Weikart, Becky L. Clark, Adam Stevenson, John T. Felts
  • Patent number: 10016338
    Abstract: An article is described including an article surface and a coating set comprising a tie coating or layer of SiOxCy or Si(NH)xCy applied to the article surface, a barrier coating or layer of SiOx, and a pH protective layer of SiOxCy or Si(NH)xCy. The respective coatings or layers can be applied by chemical vapor deposition of a polysiloxane or polysilazane precursor in the presence of oxygen. Examples of such an article are a prefilled thermoplastic syringe or thermoplastic pharmaceutical vial with a coated interior portion containing a pharmaceutical preparation or other fluid with a pH of 4 to 8, alternatively 5 to 9. The barrier coating or layer prevents oxygen from penetrating into the thermoplastic syringe or vial, and the tie coating or layer and pH protective coating or layer together protect the barrier layer from the contents of the syringe or vial.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: July 10, 2018
    Assignee: SIO2 MEDICAL PRODUCTS, INC.
    Inventors: Christopher Weikart, Becky L. Clark, Adam Stevenson, John T. Felts
  • Patent number: 9981794
    Abstract: A container includes an external package and a sealed flexible bag, adapted to hold liquid contents, retained within the external package. The bag is made from a polymer film, which prior to being formed into a bag, was a two dimensional film to which was applied a PECVD SiOx coating.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: May 29, 2018
    Assignee: SiO2 MEDICAL PRODUCTS, INC.
    Inventors: Peter J. Sagona, Christopher Weikart
  • Publication number: 20180117255
    Abstract: A method and apparatus for plasma modifying a workpiece such as a syringe barrel, cartridge barrel, vial, or blood tube is described. Plasma is provided within the lumen of the workpiece. The plasma is provided under conditions effective for plasma modification of a surface of the workpiece. A magnetic field is provided in at least a portion of the lumen. The magnetic field has an orientation and field strength effective to improve the uniformity of plasma modification of the interior surface of the generally cylindrical wall. A vessel made according to the process or using the apparatus described above. A pharmaceutical package comprising the syringe barrel or vial containing a pharmaceutical preparation, secured with a closure.
    Type: Application
    Filed: September 1, 2017
    Publication date: May 3, 2018
    Inventors: Christopher Weikart, Becky L. Clark, Adam Stevenson, Robert S. Abrams, John Belfance
  • Patent number: 9937099
    Abstract: An article is described including an article surface and a coating set comprising an optional tie coating or layer, a barrier coating or layer, and a pH protective layer. The respective coatings or layers can be applied by chemical vapor deposition of a polysiloxane or polysilazane precursor in the presence of oxygen. Examples of such an article are a prefilled thermoplastic syringe or thermoplastic pharmaceutical vial with a coated interior portion containing a pharmaceutical preparation or other fluid with a pH of 4 to 8, alternatively 5 to 9. The barrier coating or layer prevents oxygen from penetrating into the thermoplastic syringe or vial. The tie coating or layer, if present, and the pH protective coating or layer protect the barrier layer from the contents of the syringe or vial.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: April 10, 2018
    Assignee: SIO2 MEDICAL PRODUCTS, INC.
    Inventors: Christopher Weikart, Becky L. Clark, Adam Stevenson, John T. Felts