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Details for Patent: 5,307,953

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Summary for Patent: 5,307,953

Title: Single dose dispenser having a piercing member
Abstract:The application describes a dispenser for manual discharge of a single dose of a flowable substance, comprising a casing (1) which has a nozzle (2) and a pair of shoulders (3) aside the nozzle. The nozzle (2) has a piston member (5) extending inwardly from an outlet opening (9), the piston member having at least one discharge channel. A container (10) of the substance to be discharged is mounted on the piston member (5), and a seal (12) is arranged across the container (10) to seal in all the substances to be discharged. The piston member (5) has a piercing member (8) which extends towards the seal (12), whereby on pressing the container (10) on to the piston member (5) the seal (12) is pierced to allow the contents of the container (10) to be expelled along the discharge channel and out through the outlet opening (9).
Inventor(s): Regan; Philip M. (Ware, GB3)
Assignee: Glaxo Group Limited (Middlesex, GB)
Application Number:07/984,913
Patent Claim Types:
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Device; Use;

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Foreign Priority and PCT Information for Patent: 5,307,953

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
United Kingdom9125699Dec 03, 1991

International Patent Family for Patent: 5,307,953

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina247104► Subscribe
Austria166801► Subscribe
Australia2979092► Subscribe
Australia663535► Subscribe
Belgium1005867► 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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