https://patentbrief.org/company/burton-parsons-and-co-inc Plain-English explanations of patents assigned to Burton Parsons and Co Inc, newest first. en-us Mon, 15 Jun 2026 06:03:16 GMT https://patentbrief.org/patent/us/3987163/indomethacin A 1975 patent for an eye drop solution that uses a specific polymer to lubricate and cushion the eye, especially for contact lens wearers. Tue, 19 Oct 1976 00:00:00 GMT https://patentbrief.org/patent/us/3987163/indomethacin