Ophthalmic composition
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United States of America Patent
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Aug 18, 1998
Grant Date -
N/A
app pub date -
Mar 15, 1996
filing date -
Mar 31, 1994
priority date (Note) -
Expired
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Abstract
The present invention is directed to an ophthalmic composition in the form of a topical aqueous solution consisting essentially of an ophthalmologically active agent containing basic groups, an ion sensitive, hydrophilic polymer containing acidic groups in an amount of 0.004 to 1.5% by weight, at least one salt selected from the group of inorganic salts and buffers in a total amount of from 0.01 to 2.0% by weight, and optionally a wetting agent and a preservative, the ratio between salt and polymer being such that the solution exhibits a viscosity of less than 1000 mpas, and the pH of the solution is 4.0 to 8.0. The composition contains a sufficient amount of polymer to provide for a controlled absorption of the drug into the eye, its viscosity having been reduced to provide for better handling characteristics.
First Claim
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- SANTEN OY;SANTEN PHARMACEUTICAL CO., LTD.
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Alaranta, Sakari | Kangasala, FI | 4 | 46 |
Lehmussaari, Kari | Tampere, FI | 7 | 63 |
Oksala, Olli | Tampere, FI | 7 | 58 |
Pohjala, Esko | Tampere, FI | 8 | 75 |
Reunamaki, Timo | Tampere, FI | 9 | 324 |
Vartiainen, Eija | Tampere, FI | 2 | 38 |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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