Issued Patents All Time
Showing 1–25 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5986627 | Flat-panel type picture display device with electron propagation ducts | Siebe Tjerk De Zwart, Gerardus G. P. Van Gorkom, Nicolaas Lambert, Petrus H. F. Trompenaars, Bernardus H.W. Hendriks | 1999-11-16 |
| 5903094 | Flat-panel type picture display device with electron propagation ducts | Gerardus G. P. Van Gorkom, Petrus H. F. Trompenaars, Siebe Tjerk De Zwart, Bernardus H.W. Hendriks, Nicolaas Lambert | 1999-05-11 |
| 5844354 | Flat-panel type picture display device with electron propagation ducts | Siebe Tjerk De Zwart, Gerardus G. P. Van Gorkom, Nicolaas Lambert, Petrus H. F. Trompenaars, Bernardus H.W. Hendriks | 1998-12-01 |
| 5789852 | Rapidly scanning cathode-ray tube laser | Hugo Cornelissen, Gerard E. Van Rosmalen, Cornelis J. Savert | 1998-08-04 |
| 5723940 | Flat-panel type picture display device with electron propagation ducts | Gerardus G. P. Van Gorkom, Petrus H. F. Trompenaars, Siebe Tjerk De Zwart, Bernardus H.W. Hendriks, Nicolaas Lambert | 1998-03-03 |
| 5721468 | Flat-panel type picture display device with electron propagation ducts | Siebe Tjerk De Zwart, Gerardus G. P. Van Gorkom, Nicolaas Lambert, Petrus H. F. Trompenaars, Bernardus H.W. Hendriks | 1998-02-24 |
| 5621273 | Cathode ray tube and method of manufacturing a cathode ray tube | — | 1997-04-15 |
| 5572087 | Improved cathode ray tube of an image intensifier type in which internal protective films are degraded organic materials | — | 1996-11-05 |
| 5521464 | Rapidly scanning cathode ray tube/scanning laser | Hugo Cornelissen, Gerard E. Van Rosmalen, Cornelis J. Savert | 1996-05-28 |
| 5460559 | Cathode ray tube | Ronald Van Der Wilk | 1995-10-24 |
| 5347199 | Thin-type picture display device with means for effecting electron transport by secondard emission | Gerardus G. P. Van Gorkom, Petrus H. F. Trompenaars | 1994-09-13 |
| 5256934 | Display tube comprising an electron gun with a resistive focusing lens | Jeroen Van Engelshoven, Ger-Wim J. Goorhuis, Gerardus J. A. Hellings, Tjerk G. Spanjer | 1993-10-26 |
| 5202606 | Cathode-ray tube with focussing structure and getter means | Willem M. Van Alphen, Ger-Wim J. Goorhuis | 1993-04-13 |
| 5015925 | Picture display device | Tjerk G. Spanjer | 1991-05-14 |
| 4988928 | Picture display device | Willem M. Van Alphen | 1991-01-29 |
| 4988929 | Picture display device | Tjerk G. Spanjer, Willem M. Van Alphen | 1991-01-29 |
| 4961022 | Display tube including a helical focusing lens with a non-rotationally symmetrical lens element | Gerardus J. A. Hellings, Antonius W. F. van der Heijden, Erich E. Himmelbauer, Tjerk G. Spanjer, Willem M. Van Alphen +1 more | 1990-10-02 |
| 4961023 | Cathode ray tube including a helical focusing lens | Ronald Van Rijswijk | 1990-10-02 |
| 4945283 | Cathode ray tube having a tubular focus structure | Antonius W. F. van der Heijden, Gerardus J. A. Hellings, Erich E. Himmelbauer, Tjerk G. Spanjer | 1990-07-31 |
| 4899079 | Cathode ray tube | Aart A. Van Gorkum, Leopold C. M. Beirens | 1990-02-06 |
| 4868455 | Electron beam device with an electron gun having a tubular insulating electrode support | — | 1989-09-19 |
| 4857797 | Cathode ray tube having a tubular electron gun structure | Tjerk G. Spanjer | 1989-08-15 |
| 4853589 | Electron beam device having an electron gun and a method of making the electron gun | — | 1989-08-01 |
| 4827184 | Electron beam device and a focusing lens therefor | Tjerk G. Spanjer | 1989-05-02 |
| 4752266 | Method of manufacturing an electron tube envelope assembly with a precisely positioned window | — | 1988-06-21 |