US3449259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making phosphor raw-mix materials and phosphors
Assignee: Philips North America LLC
•
Filing: 1965-11-17
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Granted: 1969-06-10
•
Expires: 1985-11-17
Abstract
No abstract record available.
Inventors
- 👤 Richard C Ropp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:26
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/77; C09K11/7766; C09K11/7767; C09K11/7769; C01; C01B; C01B13/00; C01B13/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3291747A
Cited
US3322682A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |