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:
Oct. 26, 1982
Filed:
Mar. 04, 1980
Applicant:
Inventor:
Alan Dyer, Manchester, GB;
Assignee:
Laporte Industries Limited, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A62B / ;
U.S. Cl.
CPC ...
12820619 ; 12820527 ;
Abstract
It has already been suggested that chronic exposure of humans to nitrous oxide is a potential health hazard. There is especial concern for those working in the vicinity of a patient to whom nitrous oxide is administered as an anaesthetic. The present invention provides a disposable surgical mask characterized in that a layer comprising particles of a molecular sieve based on silicon dioxide and having an affinity for nitrous oxide is disposed between adjacent layers of the mask. Wearing such a mask reduces personal exposure to nitrous oxide.