US3527574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Growth of sapphire filaments
Assignee: Saint Gobain Ceramics and Plastics Inc
•
Filing: 1966-09-27
•
Granted: 1970-09-08
•
Expires: 1986-09-27
Abstract
No abstract record available.
Inventors
- 👤 Harold E La Belle Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:44
CPC Classifications
C; C30; C30B; C30B15/00; C30B15/20; C30B15/22; C30B15/24; C30B15/14; C30B15/34; C30B29/00; C30B29/10; C30B29/16; C30B29/20; Y; Y10; Y10S; Y10S117/00; Y10S117/90; Y10T; Y10T117/00; Y10T117/10; Y10T117/1024; Y10T117/1032; Y10T117/1036
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3002824A
Cited
US3124489A
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FR1293744A
Cited
US3224840A
Cited
US3291650A
Cited
US3291571A
Cited
US3291574A
Cited
US3298795A
Cited
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 |