Littlejohn; Duane P.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Littlejohn; Duane P..The latest application filed is for "automatic background ejection (abe)".
- Littlejohn; Duane P. - Manlius NY
- Littlejohn; Duane P. - Madison WI
- Littlejohn; Duane P. - Santa Clara CA
| Patent | Date |
|---|---|
| Automatic background ejection (ABE) Grant 6,608,304 - Littlejohn , et al. August 19, 2 | 2003-08-19 |
| Programmed electron flux Grant 6,255,648 - Littlejohn , et al. July 3, 2 | 2001-07-03 |
| Fourier transform molecular spectrometer Grant 5,233,190 - Schlereth , et al. * August 3, 1 | 1993-08-03 |
| Mass spectrometer with remote ion source Grant 4,739,165 - Ghaderi , et al. * April 19, 1 | 1988-04-19 |
| Mass spectrometer Grant 4,668,864 - Ghaderi , et al. May 26, 1 | 1987-05-26 |
| Mass spectrometer having magnetic trapping Grant 4,588,888 - Ghaderi , et al. May 13, 1 | 1986-05-13 |
| Mass spectrometer and method Grant 4,581,533 - Littlejohn , et al. April 8, 1 | 1986-04-08 |
| Method For Detecting Trace Quantities Of An Organic Drug Material In A Living Animal Grant 3,649,199 - Littlejohn March 14, 1 | 1972-03-14 |
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