Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5986645 | Joystick with improved actuator | — | 1999-11-16 |
| D397374 | Trackball device for a video game | — | 1998-08-25 |
| 5713458 | Bubble button | Charles H. Johnson | 1998-02-03 |
| 4767737 | Method for making carbonaceous materials | — | 1988-08-30 |
| 4743431 | Fluidization aid including low bulk density fluidization aid | — | 1988-05-10 |
| 4738828 | Fluidization aid including low bulk density fluidization aid | — | 1988-04-19 |
| 4735733 | Viscosifier, its uses, and its manufacture | Jack L. Blumenthal, Quentin H. McKenna | 1988-04-05 |
| 4696378 | Axially compact brake | — | 1987-09-29 |
| 4689161 | Viscosifier, its uses, and its manufacture | Jack L. Blumenthal, Quentin H. McKenna | 1987-08-25 |
| 4650657 | Method for making carbonaceous materials | — | 1987-03-17 |
| 4591334 | Fluidization aid | — | 1986-05-27 |
| 4583299 | Fluidization aid for cohesive materials | — | 1986-04-22 |