Patents by Inventor Robert W. Volke

Robert W. Volke 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).

  • Adhesives composition for a wound dressing
    Patent number: 5534561
    Abstract: Ad adhesive composition suitable for wound dressing and other medical applications comprising a mixture of polyisobutylene and a rubber polymer selected from the group consisting of random styrene butadiene copolymer (SBR) and halobutyl rubber so as to form a rubbery elastomer base matrix, and at least one hydrocolloid. The addition of the SBR or halobutyl rubber to the elastomer base offsets the possible degradation of the polyisobutylene upon sterilization, and therefore, helps to maintain the integrity of the composition. Water soluble hydrocolloid gums and water swellable cohesive strengthening agents are dispersed within the base matrix and may carry a pharmaceutical agent to be dispensed directly to a wound site.
    Type: Grant
    Filed: July 18, 1994
    Date of Patent: July 9, 1996
    Inventor: Robert W. Volke
  • Adhesive composition for a wound dressing
    Patent number: 5466724
    Abstract: An adhesive composition suitable for wound dressing and other medical applications comprising a mixture of polyisobutylene and a rubber polymer selected from the group consisting of random styrene butadiene rubber (SBR) and halobutyl rubber so as to form a rubbery elastomer base matrix, and at least one hydrocolloid. The addition of the SBR or halobutyl rubber to the elastomer base offsets the possible degradation of the polyisobutylene upon sterilization, and therefore, helps to maintain the integrity of the composition. Water soluble hydrocolloid gums and water swellable cohesive strengthening agents are dispersed within the base matrix and may carry a pharmaceutical agent to be dispensed directly to a wound site.
    Type: Grant
    Filed: March 20, 1995
    Date of Patent: November 14, 1995
    Assignee: Variseal Corporation
    Inventors: Robert W. Volke, Debashish Chakravarthy
  • Hydrocolloid laminate
    Patent number: 4743499
    Abstract: A hydrocolloid laminate (10) useful as a wound dressing. The laminate product comprises a lower layer of hydrocolloid adhesive (11), an upper layer of flexible open-cell polymer foam (12), first film layer (13) interposed between the adhesive layer and the foam layer and second film layer (14) provided on the foam layer on the side (17) opposite the first film layer.
    Type: Grant
    Filed: May 20, 1987
    Date of Patent: May 10, 1988
    Assignee: Variseal Corporation
    Inventor: Robert W. Volke
  • Method of processing hydrocolloid dressings
    Patent number: 4693858
    Abstract: A method of processing hydrocolloid adhesive material includes the steps of extruding a sheet of the hydrocolloid adhesive material from a vacuum extruder, applying a liner of release material to at least one side of the sheet, under pressure, and while the sheet is at an elevated temperature and maintaining the liner and the sheet under tension during cooling of the sheet.
    Type: Grant
    Filed: April 25, 1986
    Date of Patent: September 15, 1987
    Assignee: Variseal Manufacturing Corp.
    Inventor: Robert W. Volke