Patent US3676861A successfully refreshed from Google Patents.
US3533965A
Expired / Lapsed
US
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Low expansion material
Assignee: NEC Corp
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Filing: 1967-09-11
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Granted: 1970-10-13
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Expires: 1987-09-11
Abstract
No abstract record available.
Inventors
- 👤 Koichi Ikeda
- 👤 Katsuji Minagawa
- 👤 Noboru Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:38
CPC Classifications
H; H10; H10W; H10W74/00; H10W74/10; H10W74/111; H10W74/121; C; C08; C08K; C08K3/00; C08K3/32; H01; H01B; H01B1/00; H01B1/20; H01B1/22; H01B1/24; H01B3/00; H01B3/002; H01B3/004; H01B3/006; H10W74/40; H10W74/47; H10W76/00; H10W76/40; H10W76/42; H10W76/47; H10W72/00; H10W72/01; H10W72/015; H10W72/01515; H10W72/071; H10W72/075; H10W72/50; H10W72/551; H10W72/552; H10W72/5522; H10W72/5525; H10W90/00; H10W90/701; H10W90/751; H10W90/756
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) | 1973-10-12 | 1974-04-13 | 1974-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-12 | 1978-04-13 | 1978-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-12 | 1982-04-13 | 1982-10-13 | $7700.00 | Window Closed / Lapsed |