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Details for Patent: 5,817,028

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Summary for Patent: 5,817,028

Title: Method and device for the provocation of air passage narrowing and/or the induction of sputum
Abstract:A method as described for testing the susceptibility of a person to asthma. The person inhales an effective amount of sodium chloride, mannitol or another substance capable of altering the osmolarity of airway surface liquid in the subject. The substance is in the form of a dispersible dry powder containing an effective proportion of particles of a respirable size. The subject is then measured to detect airway narrowing which is indicative of a propensity for asthma. The same technique of dry powder inhalation can be used to test for the susceptibility of a person to rhinitus, to induce sputum and promote mucociliary clearance.
Inventor(s): Anderson; Sandra Doreen (Birchgrove, AU)
Assignee: Central Sydney Area Health Service (Camperdown, AU)
Application Number:08/696,987
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Foreign Priority and PCT Information for Patent: 5,817,028

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
AustraliaPM4114Feb 25, 1994
PCT Information
PCT FiledFebruary 23, 1995PCT Application Number:PCT/AU95/00086
PCT Publication Date:August 31, 1995PCT Publication Number: WO95/22993

International Patent Family for Patent: 5,817,028

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
AustraliaPM411494► Subscribe
European Patent Office0748228► Subscribe11C0002France► Subscribe
European Patent Office0748228► SubscribeSPC/GB11/004United Kingdom► Subscribe
Denmark0748228► Subscribe
Germany122011000004► Subscribe
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws, it is advisable to have patent counsel verify freedom to operate.

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