Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7900474 | Hollow glass microspheres comprising selenium oxide and method of making thereof | — | 2011-03-08 |
| 7506523 | Method of making hollow inorganic microspheres, and products made thereby | — | 2009-03-24 |
| 5962095 | Stabilized fruit stones | — | 1999-10-05 |
| 5087508 | Dew and frost resistant signs | — | 1992-02-11 |
| 5037149 | Dog litter cleanup bag | — | 1991-08-06 |
| 4900077 | Dog litter cleanup device | — | 1990-02-13 |
| 4744831 | Hollow inorganic spheres and methods for making such spheres | — | 1988-05-17 |
| 4725390 | Process for making ceramic spheroids | James A. Laird | 1988-02-16 |
| 4632876 | Ceramic spheroids having low density and high crush resistance | James A. Laird | 1986-12-30 |
| 4493875 | Proppant for well fractures and method of making same | Richard B. Castle | 1985-01-15 |
| 4393901 | Low-permeability hollow spheres and pipe filled with the spheres for temporary weight reduction | — | 1983-07-19 |