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(12) Patent Application: | (11) CA 2129354 |
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(54) English Title: | PROCEDE DE REALISATION SUR SILICIUM, DE CATHODES EMISSIVES A MICROPOINTES, POUR ECRAN PLAT DE PETITES DIMENSIONS, ET PRODUITS OBTENUS |
(54) French Title: | METHOD FOR PRODUCING MICRODOT EMITTING CATHODES ON SILICON FOR COMPACT FLAT SCREENS AND RESULTING PRODUCTS |
Status: | Deemed Abandoned and Beyond the Period of Reinstatement - Pending Response to Notice of Disregarded Communication |
(51) International Patent Classification (IPC): |
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(72) Inventors : |
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(73) Owners : |
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(71) Applicants : |
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(74) Agent: | ROBIC AGENCE PI S.E.C./ROBIC IP AGENCY LP |
(74) Associate agent: | |
(45) Issued: | |
(86) PCT Filing Date: | 1993-12-03 |
(87) Open to Public Inspection: | 1994-06-23 |
Availability of licence: | N/A |
Dedicated to the Public: | N/A |
(25) Language of filing: | French |
Patent Cooperation Treaty (PCT): | Yes |
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(86) PCT Filing Number: | PCT/FR1993/001191 |
(87) International Publication Number: | FR1993001191 |
(85) National Entry: | 1994-08-02 |
(30) Application Priority Data: | ||||||
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A method for producing microdot emitting cathodes on silicon for compact flat screens, and the products obtained by means of said method, are disclosed. According to the method, the emitting cathodes are made from a basic monolithic silicon substrate (1) consisting of a thick wafer (at least 300 microns) or a thin film a few microns thick on an insulating substrate (alumina or glass), the silicon film being "active" in both cases. The method is useful in the field of flat display screens based on the physical phenomenon of cathodoluminescence and field effect electron emission, and in all industrial sectors using compact display screens, e.g. video camera viewfinders, calculators, monitoring devices of all kinds, vehicles, watches and clocks, etc.
2129354 9414182 PCTABS00166
La présente invention a pour objet un procédé de réalisation sur
silicium, de cathodes émissives à micropointes, pour écran plat
de petites dimensions, ainsi que les produits obtenus par ce
procédé. Il consiste à réaliser les cathodes émissives à partir d'un
substrat de base (1) monolithique en silicium formé soit d'une
tranche épaisse (300 microns ou plus), soit d'une couche fine de
quelques microns, déposée sur un substrat isolant (alumine ou
verre), la couche de silicium étant "active" dans les deux cas. Il
concerne le domaine des écrans de visualisation plats basés sur le
phénomène physique de cathodoluminescence et l'émission d'électrons
par effet de champ, et peut s'appliquer à tous les secteurs
industriels utilisant des écrans de visualisation ou d'affichage de
faibles dimensions, par exemple viseurs de camescopes,
calculatrices, appareils de contrôle de tous types, véhicules, horloges et
montres, etc.
Note: Claims are shown in the official language in which they were submitted.
Note: Descriptions are shown in the official language in which they were submitted.
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Description | Date |
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Time Limit for Reversal Expired | 2001-12-03 |
Application Not Reinstated by Deadline | 2001-12-03 |
Deemed Abandoned - Failure to Respond to Maintenance Fee Notice | 2000-12-04 |
Inactive: Abandon-RFE+Late fee unpaid-Correspondence sent | 2000-12-04 |
Letter Sent | 2000-08-23 |
Inactive: Office letter | 2000-05-16 |
Application Published (Open to Public Inspection) | 1994-06-23 |
Abandonment Date | Reason | Reinstatement Date |
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2000-12-04 |
The last payment was received on 1999-12-01
Note : If the full payment has not been received on or before the date indicated, a further fee may be required which may be one of the following
Patent fees are adjusted on the 1st of January every year. The amounts above are the current amounts if received by December 31 of the current year.
Please refer to the CIPO
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web page to see all current fee amounts.
Fee Type | Anniversary Year | Due Date | Paid Date |
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MF (application, 4th anniv.) - small | 04 | 1997-12-03 | 1997-11-26 |
MF (application, 5th anniv.) - small | 05 | 1998-12-03 | 1998-12-01 |
MF (application, 6th anniv.) - small | 06 | 1999-12-03 | 1999-12-01 |
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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PIXTECH SA |
Past Owners on Record |
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MICHEL GARCIA |