Issued Patents All Time
Showing 25 most recent of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5864136 | Mass spectrometry method with two applied trapping fields having the same spatial form | John N. Louris | 1999-01-26 |
| 5703358 | Method for generating filtered noise signal and braodband signal having reduced dynamic range for use in mass spectrometry | Doneil J. Hoekman | 1997-12-30 |
| 5679951 | Mass spectrometry method with two applied trapping fields having same spatial form | John N. Louris | 1997-10-21 |
| 5610397 | Mass spectrometry method using supplemental AC voltage signals | — | 1997-03-11 |
| 5561291 | Mass spectrometry method with two applied quadrupole fields | John N. Louris | 1996-10-01 |
| 5508516 | Mass spectrometry method using supplemental AC voltage signals | — | 1996-04-16 |
| 5466931 | Mass spectrometry method using notch filter | — | 1995-11-14 |
| 5449905 | Method for generating filtered noise signal and broadband signal having reduced dynamic range for use in mass spectrometry | Doneil J. Hoekman | 1995-09-12 |
| 5436445 | Mass spectrometry method with two applied trapping fields having same spatial form | John N. Louris | 1995-07-25 |
| 5381007 | Mass spectrometry method with two applied trapping fields having same spatial form | — | 1995-01-10 |
| 5345078 | Mass spectrometry method using notch filter | — | 1994-09-06 |
| 5274233 | Mass spectrometry method using supplemental AC voltage signals | — | 1993-12-28 |
| 5256875 | Method for generating filtered noise signal and broadband signal having reduced dynamic range for use in mass spectrometry | Doneil J. Hoekman | 1993-10-26 |
| 5206507 | Mass spectrometry method using filtered noise signal | — | 1993-04-27 |
| 5200613 | Mass spectrometry method using supplemental AC voltage signals | — | 1993-04-06 |
| 5196699 | Chemical ionization mass spectrometry method using notch filter | — | 1993-03-23 |
| 5187365 | Mass spectrometry method using time-varying filtered noise | — | 1993-02-16 |
| 5173604 | Mass spectrometry method with non-consecutive mass order scan | — | 1992-12-22 |
| 5134286 | Mass spectrometry method using notch filter | — | 1992-07-28 |
| RE34000 | Method of operating ion trap detector in MS/MS mode | John E. P. Syka, John N. Louris, George C. Stafford, Walter E. Reynolds | 1992-07-21 |
| 5105081 | Mass spectrometry method and apparatus employing in-trap ion detection | — | 1992-04-14 |
| 4749860 | Method of isolating a single mass in a quadrupole ion trap | George C. Stafford, John E. P. Syka | 1988-06-07 |
| 4736101 | Method of operating ion trap detector in MS/MS mode | John E. P. Syka, John N. Louris, George C. Stafford, Walter E. Reynolds | 1988-04-05 |
| 4686367 | Method of operating quadrupole ion trap chemical ionization mass spectrometry | John N. Louris, John E. P. Syka | 1987-08-11 |
| 4650999 | Method of mass analyzing a sample over a wide mass range by use of a quadrupole ion trap | William J. Fies, Walter E. Reynolds, George C. Stafford, John E. P. Syka | 1987-03-17 |