Leonard; Richard L.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Leonard; Richard L..The latest application filed is for "wet spinning process for aramid polymer containing salts".
- Leonard; Richard L. - Decatur AL
- Leonard; Richard L. - Cary NC
- Leonard; Richard L. - Raleigh NC
| Patent | Date |
|---|---|
| Wet spinning process for aramid polymer containing salts Grant 5,667,743 - Tai , et al. September 16, 1 | 1997-09-16 |
| Multi-zoned hollow fiber permeator Grant 4,220,535 - Leonard September 2, 1 | 1980-09-02 |
| Method for filtering through highly permeable acrylic hollow fibers Grant 4,209,307 - Leonard June 24, 1 | 1980-06-24 |
| Method for making a weft and a wig made from the same Grant 4,171,001 - Leonard , et al. October 16, 1 | 1979-10-16 |
| Asymmetric hollow acrylic fibers Grant 4,084,036 - Leonard April 11, 1 | 1978-04-11 |
| Method for producing highly permeable acrylic hollow fibers Grant 3,975,478 - Leonard August 17, 1 | 1976-08-17 |
| Sealing Means For Hollow Fiber Bundles Grant 3,760,949 - Carey , et al. September 25, 1 | 1973-09-25 |
| Fabrication Of High Pressure Seals For Water Equilibrated Fiber Bundles Grant 3,730,959 - Horres, Jr. , et al. May 1, 1 | 1973-05-01 |
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