Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6551748 | Prevention of polymerization in Li/MnO2 organic electrolyte electrochemical systems | Terrill B. Atwater, Anthony G. Pellegrino | 2003-04-22 |
| 5951352 | Methods of making thermionic cathode using oxygen deficient and fully oxidized material to enhance emissions | Donald W. Eckart, Paul Fischer | 1999-09-14 |
| 5828164 | Thermionic cathode using oxygen deficient and fully oxidized material for high electron density emissions | Donald W. Eckart, Paul Fischer | 1998-10-27 |
| 5545945 | Thermionic cathode | Donald W. Eckart, Paul Fischer | 1996-08-13 |
| 5298830 | Method of preparing an impregnated cathode with an enhanced thermionic emission from a porous billet and cathode so prepared | Donald W. Eckart | 1994-03-29 |
| 5074818 | Method of making and improved scandate cathode | Donald W. Eckart, Gerard L. Freeman, Bernard Sith | 1991-12-24 |
| 5022883 | Method of making a long life high current density cathode from aluminum oxide and tungsten oxide powders | Gerard L. Freeman, Donald W. Eckart, Bernard Smith | 1991-06-11 |
| 5007874 | Method of making a cathode from tungsten and iridium powders using a reaction product from reacting a group III A metal with barium peroxide as an impregnant | Donald W. Eckart, Bernard Smith, Gerard L. Freeman | 1991-04-16 |
| H849 | Method of making a cathode from tungsten and iridium powders using a | Gerard L. Freeman, Bernard Smith | 1990-11-06 |
| 4957463 | Method of making a long life high current density cathode from tungsten and iridium powders using a quaternary compound as the impregnant | Bernard Smith, Gerard L. Freeman, Donald W. Eckart | 1990-09-18 |
| 4929418 | Method of making a cathode from tungsten powder | — | 1990-05-29 |
| 4911626 | Method of making a long life high current density cathode from tungsten and iridium powders using a mixture of barium peroxide and a coated emitter as the impregnant | Bernard Smith, Gerard L. Freeman, Donald W. Eckart | 1990-03-27 |
| 4895699 | Method of making a cathode from tungsten and iridium powders using a reaction product from reacting barium peroxide with an excess of tungsten as the impregnant | Gerard L. Freeman, Bernard Smith, Donald W. Eckart | 1990-01-23 |
| 4894257 | Method of overcoating a high current density cathode with rhodium | Bernard Smith, Gerard L. Freeman | 1990-01-16 |
| 4872864 | Method of making a cathode from tungsten and aluminum powders | Bernard Smith, Gerard L. Freeman, Donald W. Eckart | 1989-10-10 |
| 4863410 | Method of making a long life high current density cathode from tungsten and iridium powders using a low melting point impregnant | Bernard Smith, Gerard L. Freeman, Donald W. Eckart | 1989-09-05 |
| 4840767 | Method of making a cathode from tungsten and iridium powders using a barium iridiate formed from barium peroxide and iridium oxide as the impregnant | Gerard L. Freeman, Bernard Smith, Donald W. Eckart | 1989-06-20 |
| 4818480 | Method of making a cathode from tungsten and iridium powders using a barium peroxide containing material as the impregnant | Gerard L. Freeman, Bernard Smith, Donald W. Eckart | 1989-04-04 |
| 4808137 | Method of making a cathode from tungsten and iridium powders using a bariumaluminoiridiate as the impregnant | Gerard L. Freeman, Bernard Smith | 1989-02-28 |
| 4735591 | Method of making a long life high current density cathode from tungsten and iridium powders using a barium iridiate as the impregnant | Gerard L. Freeman, Bernard Smith | 1988-04-05 |
| 4734073 | Method of making a thermionic field emitter cathode | Bernard Smith | 1988-03-29 |
| 4708681 | Method of making a long lived high current density cathode from tungsten and iridium powders | Gerard L. Freeman, Bernard Smith | 1987-11-24 |
| 4544535 | Method or preparing nonlaminating anisotropic boron nitride | Bernard Smith, Gerard L. Freeman | 1985-10-01 |
| 4494003 | Method of detecting gamma radiation by placing glass doped with iron in an environment subject to gamma radiation and then measuring any color changed in the doped glass as a function of gamma radiation | Adolph G. Hager, Gerald L. Freeman, James P. Rush, Stanley DuBuske | 1985-01-15 |
| 4327131 | Method of coating a ceramic substrate | Edward Daly, Albert F. Newman, Willis M. Smith | 1982-04-27 |