Patents Represented by Attorney, Agent or Law Firm John A. Burtis
  • Patent number: 6534006
    Abstract: A sterilization indicator that presents a visually distinct and uniform color transition after having been passed through sterilizing conditions. This sterilization indicator has a base layer with an indicator compound applied to at least an indicating region thereon. It also has a raised lamina attached to the base layer so as to substantially surround the indicating region.
    Type: Grant
    Filed: August 30, 2001
    Date of Patent: March 18, 2003
    Assignee: 3M Innovative Properties Company
    Inventor: Rodney K. Hehenberger
  • Patent number: 6528277
    Abstract: This invention relates to a container and method for detecting a specific environmental parameter or combination of parameters, or for determining the effectiveness of a sterilization procedure. The invention relates to test indicators containing controlled volumes of compressed, gas-permeable materials, and modified caps comprising one or more apertures, sterilant permeable inserts, protruding members, or a combination thereof, and to methods for using test indicators for determining the efficacy of different types of sterilization processes. If proper sterilization conditions are not met, the interactive enzyme system remains active, and a color product forms upon the addition of the remaining components of the enzyme system. If the proper sterilization conditions are met, the sterilant destroys the interactive enzymes and no color product is formed. Inactivation of the enzyme system parallels the inactivation of bacterial spores subjected to the sterilization process.
    Type: Grant
    Filed: October 27, 2000
    Date of Patent: March 4, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Judy K. Hendricks, Shaundrea L. Rechsteiner, Joel R. Gorski, Adam Lee, Roger Fiske
  • Patent number: 6520181
    Abstract: A face mask is disclosed that includes a mask portion, a resilient member (e.g., a pillowed web), and, optionally, an adhesive portion. The resilient member and the adhesive portion are alternately positionable between the mask portion and the wearer to inhibit the passage of vapor between the mask and the wearer, which prevents fogging of the wearer's eyewear. A method for using the face mask is also disclosed.
    Type: Grant
    Filed: December 12, 2001
    Date of Patent: February 18, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Nicholas R. Baumann, Shannon L. Dowdell, Matt T. Scholz, Wayne K. Dunshee
  • Patent number: 6503855
    Abstract: A laminated composite suitable for use in medical products such as tapes and wraps. The composite includes, for example, a first nonwoven fiber layer, an elastic layer, a melt blown adhesive fiber layer, and a second nonwoven fiber layer. A scrim layer serves as a deadstop, or stretch limit, to prevent over stretching. The non-woven fiber layer(s) and/or the scrim layer form suitable loops for a hook and loop fastening system. The scrim layer in some embodiments is employed to make the composite finger tearable. The melt blown adhesive layer, nonwoven web layer and elastic layer form a breathable, porous elastic composite. Methods of manufacturing the composite are also disclosed.
    Type: Grant
    Filed: November 19, 1999
    Date of Patent: January 7, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Robert H. Menzies, Jason L. Edgar, Scott J. Tuman, David L. Seidel, Robert J. Maki, John E. Riedel, Eugene G. Joseph, Leon Levitt, Brandon T. Berg
  • Patent number: 6492133
    Abstract: Disc assay devices and methods for the detection and enumeration of microorganisms are disclosed. The devices and methods include a plurality of discs attached to a substrate and a reflector on one surface of each of the discs to reflect electromagnetic energy of selected wavelengths after the energy has passed through the disc. The reflector may be useful to improve the accuracy of detection and/or enumeration of target microorganisms on the assay devices. A system for detecting and/or enumerating target microorganisms on disc assay devices is also provided.
    Type: Grant
    Filed: May 1, 2000
    Date of Patent: December 10, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Peter D. Wickert, Michael G. Williams, Christine A. Binsfeld
  • Patent number: 6488890
    Abstract: A sterilization indicator having sterilizing agent sensitive indicia is described. The indicator allows a sterilization cycle to be monitored without the need for a user to subjectively distinguish between color, quality or intensity of display patterns.
    Type: Grant
    Filed: August 5, 1999
    Date of Patent: December 3, 2002
    Assignee: 3M Innovative Properties Company
    Inventor: Steven S. Kirckof
  • Patent number: 6485979
    Abstract: A electronic system for tracking and monitoring articles to be subjected to a sterilization cycle is disclosed. The method uses a sterilization indicator and electronically links sterilization information with the articles subjected to the sterilization process. The indicator allows a sterilization cycle to be monitored without the need for a user to subjectively distinguish between color, quality or intensity of display patterns.
    Type: Grant
    Filed: August 5, 1999
    Date of Patent: November 26, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Roland C. Kippenhan, Steven S. Kirckof, Phillip A. Bolea, Richard M. Rumble
  • Patent number: 6485978
    Abstract: A sterilization indicator having sterilizing agent sensitive indicia is described. The indicator allows a sterilization cycle to be monitored without the need for a user to subjectively distinguish between color, quality or intensity of display patterns.
    Type: Grant
    Filed: August 5, 1999
    Date of Patent: November 26, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Steven S. Kirckof, Phillip A. Bolea
  • Patent number: 6479073
    Abstract: An article that includes a substrate having a surface, at least a portion of which is provided with a pressure sensitive adhesive composition that includes a blend of discrete, crosslinked polymer microspheres and a polymer matrix. The composition has a substantially smooth, exposed surface available for adhesion.
    Type: Grant
    Filed: October 7, 1996
    Date of Patent: November 12, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Donald H. Lucast, Richard J. Goetz
  • Patent number: 6461467
    Abstract: Medical dressings are disclosed that include multiple exposed pressure sensitive adhesives. One of the pressure sensitive adhesives includes a bioactive agent and is substantially contact transparent. In some embodiments, all of the adhesives are substantially contact transparent. Also provided are methods of manufacturing the medical dressings. By providing multiple exposed pressure sensitive adhesives, the pressure sensitive adhesive formulations can be varied to provide desired properties in different areas of the dressing. A pressure sensitive adhesive that exhibits relatively high tack to skin may be provided around the periphery of the dressing while a pressure sensitive adhesive incorporating a bioactive agent is provided in the center of the dressing. Alternatively, a higher tack pressure sensitive adhesive may be provided at two opposing sides of the dressing with a bioactive adhesive located in between the opposing portions of higher tack adhesive.
    Type: Grant
    Filed: April 23, 2001
    Date of Patent: October 8, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Todd A. Blatchford, Steven B. Heinecke, Donald H. Lucast, Donald G. Peterson
  • Patent number: 6458095
    Abstract: A dispenser in which a dry powder (one component of a two-part adhesive tissue sealant and/or adhesive) is stored in a container (e.g., a carpule) having a septum at one end, an open end opposite the septum, and a movable plug. The powder is retained at the septum end of the container by the movable plug, which is displaced and pushed back as the solvent used for reconstituting the powder is introduced (e.g., through the septum). The second part of the tissue sealant is contained within a second container, also with a movable plug. After the first part is reconstituted, a manifold is fitted which pierces both septums and allows the contents to be dispensed. A dual syringe body supports the containers, and has pistons that enter the open ends to advance the movable plugs. Other embodiments of tissue adhesive and/or sealant dispensers and kits as well as methods of preparing tissue sealants are also described.
    Type: Grant
    Filed: March 10, 2000
    Date of Patent: October 1, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: David F. Wirt, Larry H. Dodge, Jeffrey D. Smith
  • Patent number: 6440744
    Abstract: A sterilization monitor includes a substrate and an monitor composition. The monitor composition contains a colorant and a halogen source and undergoes a distinct color change when exposed to a peracid. The sterilization monitor can be used to monitor a sterilization process involving a peracid. A sterilization monitoring device, including a sterilization monitor enclosed in a housing having a vapor permeable barrier, can also be used to monitor a sterilization process.
    Type: Grant
    Filed: January 5, 2000
    Date of Patent: August 27, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Ramon T. Ignacio, Allan P. Piechowski
  • Patent number: 6422778
    Abstract: Systems and methods for applying or dispensing surgical prep solution. The applicator system includes a spreader element and a container of surgical prep solution. The spreader element includes a body with an orifice covered by a pad. The orifice is in fluid communication with a passage through an elongated stem connected to the body. The container may be collapsible with only limited recovery. The spreader element may include a receptacle for receiving the container.
    Type: Grant
    Filed: January 12, 2001
    Date of Patent: July 23, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Nicholas R. Baumann, Matthew T. Scholz, Robert P. Zaspel, Kent E. Lageson, Claude E. Cybulski
  • Patent number: 6415170
    Abstract: A biomedical electrode comprises a connector stud (1) anchored in a patch of adhesive-coated backing material (7) which is used to secure the electrode to the skin of a patient. The connector stud (1), which is located in a pierced opening in the backing material (7), has a head portion (2) to which an electrical lead of an electromedical monitoring/diagnostic system can be attached, and an electrode plate (3) which, when the biomedical electrode is in use, is placed in electrical communication with the skin of the patient. A strip of ionically-conductive adhesive (9) extends across the backing material and over the electrode plate (3) and a strip of scrim material (17) is located adjacent the adhesive coating on the backing material, underneath the adhesive strip (9). The two strips (9, 17) are displaced, relative to the electrode plate (3), towards a tab (13) which is used for removing the electrode from the skin of the patient.
    Type: Grant
    Filed: May 3, 1999
    Date of Patent: July 2, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Nikolaus Loutis, Derek Wright, Paul Wiedenhaupt
  • Patent number: 6405730
    Abstract: An ophthalmic surgical drape and a method of applying the drape to a, patient. The ophthalmic surgical drape is made from a sheet having an aperture in the interior of the sheet, and at least two tear lines in the sheet extending from the aperture. The drape also has a field of skin compatible adhesive adjacent the aperture, with the field being traversed by the tear lines so as to divide the field into at least two portions. The drape may be provided in a folded condition in which tearing can be accomplished so as to divide the drape into two sections before the drape is unfolded. Also disclosed are two tear lines disposed along an oblique angle, and a method of applying the drape.
    Type: Grant
    Filed: August 2, 2001
    Date of Patent: June 18, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Yolla B. Levitt, Dennis L. Baker, Robert A. Davis, Camille M. Hildebrandt, Mary K. Reed
  • Patent number: D458367
    Type: Grant
    Filed: January 12, 2001
    Date of Patent: June 4, 2002
    Assignee: 3M Innovative Properties Company
    Inventors: Robert P. Zaspel, Matthew T. Scholz, Kent E. Lageson, Claude E. Cybulski, Nicholas R. Baumann, Ellen M. Anderson-Manz
  • Patent number: D470592
    Type: Grant
    Filed: May 2, 2001
    Date of Patent: February 18, 2003
    Assignee: 3M Innovative Properties Company
    Inventor: Wayne K. Dunshee
  • Patent number: D471631
    Type: Grant
    Filed: August 14, 2002
    Date of Patent: March 11, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Wayne K. Dunshee, Mark A. Schonewill
  • Patent number: D471632
    Type: Grant
    Filed: August 14, 2002
    Date of Patent: March 11, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Wayne K. Dunshee, Mark A. Schonewill
  • Patent number: D471984
    Type: Grant
    Filed: August 14, 2002
    Date of Patent: March 18, 2003
    Assignee: 3M Innovative Properties Company
    Inventors: Wayne K. Dunshee, Mark A. Schonewill