US3544486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory bodies containing aluminum nitride,boron nitride and titanium boride
Assignee: GTE Sylvania Inc
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Filing: 1968-05-23
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Granted: 1970-12-01
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Expires: 1988-05-23
Abstract
No abstract record available.
Inventors
- 👤 Edmund M Passmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:50
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/58; C04B35/583; C23; C23C; C23C14/00; C23C14/22; C23C14/24; C23C14/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2839413A
Cited
US3003885A
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US3181968A
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US3236663A
Cited
US3256103A
Cited
US3251700A
Cited
US3408312A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |