Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873158 | Overdischarge protection for rechargeable cells | On K. Chang, John C. Hall, Lenard F. Silvester | 1989-10-10 |
| 4863815 | Cell design for spirally wound rechargeable alkaline metal cell | On K. Chang, John C. Hall, Lenard F. Sylvester | 1989-09-05 |
| 4844993 | Additive to improve voltage regulation in a lithium-copper chloride rechargeable cell | On K. Chang, John C. Hall, Lenard F. Silvester | 1989-07-04 |