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:
Sep. 08, 1987
Filed:
Sep. 08, 1986
Karl-Heinz Pannwitz, Lubeck, DE;
Dragerwerk AG, , DE;
Abstract
A diffusion sample collector for gaseous media, consisting of a transparent container open at both ends, which contains a collecting layer and has at its two open ends permeable retaining elements. The collector is improved in such a manner that the presence of hazardous substances in the surrounding air to be analyzed can be recognized during the collecting of the samples in order that an unnecessary analysis of the collecting layer can be prevented in the absence of hazardous substances and also gas eruptions can be noticed immediately. For this latter purpose, an additional layer is provided in the container, which is separated from the collecting layer by a dividing wall and is in contact with the gas to be analyzed through the opposite end and its retaining element.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile