Patent US3027329A successfully refreshed from Google Patents.
US3027329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gallium nitride phosphors
Assignee: US Philips Corp
•
Filing: 1960-01-27
•
Granted: 1962-03-27
•
Expires: 1980-01-27
Abstract
No abstract record available.
Inventors
- 👤 Grimmeiss Hermann Georg
- 👤 Koelmans Hein
- 👤 Maak Ingo Bruno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:22
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/0883
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A LUMINESCENT MATERIAL CONSISTING ESSENTIALLY OF GALLIUM NITRIDE ACTIVATED WITH FROM 10-5 TO 10-2 MOLS OF A PRIMARY ACTIVATOR SELECTED FROM THE ELEMENTS OF THE GROUP CONSISTING OF LITHIUM, SODIUM, COPPER, SILVER, GOLD, BERYLLIUM, MAGNESIUM, CALCIUM, STRONTIUM, BARIUM, ZINC, CADMIUM, MERCURY, ALUMINUM INDIUM, THALLIUM, TIN AND LEAD AND FROM 10-5 TO 10-2 MOLS OF AT LEAST ONE SECONDARY ACTIVATOR SELECTED FROM THE ELEMENTS OF THE GROUP CONSISTING OF OXYGEN, SULFUR, SELENIUM, TELLURIUM AND FLUORINE PER MOL OF THE GALLIUM NITRIDE.
Claim 2
Dependent Claim
126 words
A PROCESS FOR PREPARING A LUMINESCENT MATERIAL CONSISTING ESSENTIALLY OF GALLIUM NITRIDE ACTIVATED WITH FROM 10-5 T 10-2 MOLS OF A PRIMARY ACTIVATOR SELECTED FROM THE ELEMENTS OF THE GROUP CONSISTING OF LITHIUM, SODIUM COPPER, SILVER, GOLD, BERYLLIUM, MAGNESIUM, CALCIUM, STRONTIUM, BARIUM, ZINC, CADMIUM, MERCURY, ALUMINUM, INDIUM, THALLIUM, TIN AND LEAD AND FROM 10-5 TO 10-2 MOLS OF AT LEAST ONE SECONDARY ACTIVATOR SELECTED FROM THE ELEMENTS OF THE GROUP CONSISTING OF OXYGEN, SULFUR, SELENIUM, TELLURIUM AND FLUORINE PER MOL OF THE GALLIUM NITRIDE COMPRISING HEATING AT A TEMPERATURE BETWEEN 300*C. AND 1200*C. A GALLIUM CONTAINING MATERIAL SELECTED FROM THE GROUP CONSISTING OF GALLIUM AND LITHIUM GALLIUM NITRIDE TOGETHER WITH SAID ACTIVATORS IN AN AMMONIA ATMOSPHERE FOR A PERIOD OF FROM 5 MINUTES TO 10 HOURS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-26 | 1965-09-25 | 1966-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-26 | 1969-09-25 | 1970-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-26 | 1973-09-25 | 1974-03-27 | $7700.00 | Window Closed / Lapsed |