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Details for Patent: 4,550,022

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Summary for Patent: 4,550,022

Title: Tissue irrigating solution
Abstract:A tissue irrigating solution useful for irrigating animal tissue, such as ocular tissue and neuro tissue, during surgery, contains sodium, potassium, magnesium, calcium, chloride, and bicarbonate ions as well as dextrose and glutathione in proportions consistant with the osmotic stability and continued metabolism of the tissue cells. The irrigating solution is prepared by mixing a first basic solution which provides the bicarbonate and a second acidic solution which provides the calcium, magnesium, dextrose and glutathione. The first and second solutions may be stored as stable, sterile solutions for extended periods of time and mixed within 24 hours of use.
Inventor(s): Garabedian; Michael E. (Arlington, TX), Roehrs; Robert E. (Fort Worth, TX)
Assignee: Alcon Laboratories, Inc. (Fort Worth, TX)
Application Number:06/582,564
Patent Claim Types:
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International Patent Family for Patent: 4,550,022

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina228986► subscribe
Austria26398► subscribe
Australia559887► 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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