US3527626A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silicon carbide luminescent materials
Assignee: English Electric Co Ltd
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Filing: 1967-09-07
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Granted: 1970-09-08
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Expires: 1987-09-07
Abstract
No abstract record available.
Inventors
- 👤 Robert William Brander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:26
CPC Classifications
H; H10; H10H; H10H20/00; H10H20/80; H10H20/81; H10H20/822; H10H20/826; H10H20/8262; C; C09; C09K; C09K11/00; C09K11/08; C09K11/65; C30; C30B; C30B19/00; C30B19/02; C30B19/04; C30B29/00; C30B29/10; C30B29/36; Y; Y10; Y10S; Y10S148/00; Y10S148/072; Y10S148/107; Y10S148/148; Y10S252/00; Y10S252/95
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-07 | 1974-03-09 | 1974-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-07 | 1978-03-09 | 1978-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-07 | 1982-03-09 | 1982-09-08 | $7700.00 | Window Closed / Lapsed |