Sheppard; Douglas P.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Sheppard; Douglas P..The latest application filed is for "memory cell system and method".
- Sheppard; Douglas P. - Trophy Club TX US
- Sheppard; Douglas P. - Southlake TX
- Sheppard Douglas P. - Grapevine TX
| Patent | Date |
|---|---|
| Memory cell system and method Grant 8,964,451 - Sheppard February 24, 2 | 2015-02-24 |
| Memory Cell System and Method App 20120230130 - Sheppard; Douglas P. | 2012-09-13 |
| Multiport RAM with programmable data port configuration Grant RE40,423 - Nance , et al. July 8, 2 | 2008-07-08 |
| Shared bit line memory device and method Grant 7,092,279 - Sheppard August 15, 2 | 2006-08-15 |
| Memory device and method with improved power and noise characteristics Grant 7,050,345 - Sheppard May 23, 2 | 2006-05-23 |
| Multiport RAM with programmable data port configuration Grant 5,715,197 - Nance , et al. February 3, 1 | 1998-02-03 |
| Circuit for presetting the voltage of an output terminal Grant 5,124,577 - Davis , et al. June 23, 1 | 1992-06-23 |
| Method of making MOS read only memory by specified double implantation Grant 4,549,336 - October 29, 1 | 1985-10-29 |
| Multi-bit read only memory circuit Grant 4,495,602 - Sheppard January 22, 1 | 1985-01-22 |
| Semiconductor memory circuit with depletion data transfer transistor Grant 4,389,705 - Sheppard June 21, 1 | 1983-06-21 |
| Multi-bit read only memory circuit Grant 4,388,702 - Sheppard June 14, 1 | 1983-06-14 |
| Semiconductor memory circuit Grant 4,388,705 - Sheppard June 14, 1 | 1983-06-14 |
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