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Details for Patent: 5,501,673

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Summary for Patent: 5,501,673

Title: Injection cartridge
Abstract:An injection cartridge of the dual-chamber type has a bypass connection between its two chambers which is arranged such that the interior wall of the cartridge is modified in a determined area in such a way that the movable wall between the two chambers does not seal completely against the interior wall in said area.
Inventor(s): Hjertman; Birger (Vallingby, SE), Levander; Gustav (Bromma, SE), Ljunquist; Olle (Taby, SE)
Assignee: Pharmacia AB (Stockholm, SE)
Application Number:08/325,209
Patent Claim Types:
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Foreign Priority and PCT Information for Patent: 5,501,673

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Sweden9201248Apr 21, 1992
PCT Information
PCT FiledApril 16, 1993PCT Application Number:PCT/SE93/00337
PCT Publication Date:October 28, 1993PCT Publication Number: WO93/20868

International Patent Family for Patent: 5,501,673

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Austria170406<disabled in preview>
Australia4274093<disabled in preview>
Australia673360<disabled in preview>
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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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