The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 10, 1998
Filed:
Jun. 02, 1995
Applicant:
Inventors:
Anthony Arthur Challis, Langport, GB;
Michael John Bevis, Uxbridge, GB;
Assignee:
British Technology Group Limited, London, GB;
Primary Examiner:
Int. Cl.
CPC ...
A61F / ; B32B / ;
U.S. Cl.
CPC ...
428136 ; 428131 ; 428132 ; 428134 ; 428135 ; 428137 ; 428913 ; 426326 ; 426324 ; 426316 ; 426415 ; 426118 ; 383102 ; 383103 ; 602 47 ;
Abstract
A bilayer laminated medical dressing having a thermally expandable passage is provided. The medical dressing achieves gas permeability as a function of temperature by cutting a star-shaped hole through the dressing when the dressing is flat and relaxed. On warming, the leaves between the radial cuts of the star-shaped hole curl and increase the hole size. Such a material is useful as a medical dressing.