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PatentBrief

Company Portfolio

Burton Parsons and Co Inc

Patents indexed

1

Year range

1976

biotechpharmaceutical

Key Inventors

Billy F. Rankin1

All Patents

1

Career timeline

1 patents, in 1976

Dot size = forward citations

19761977

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US 3987163·1976

How Polystyrene Sulfonate Helps Treat Dry Eye Symptoms

A 1975 patent for an eye drop solution that uses a specific polymer to lubricate and cushion the eye, especially for contact lens wearers.

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