US3518503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor structures of single crystals on polycrystalline substrates
Assignee: International Business Machines Corp
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Filing: 1967-06-07
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Granted: 1970-06-30
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Expires: 1987-06-07
Abstract
No abstract record available.
Inventors
- 👤 Ven Y Doo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:02
CPC Classifications
H; H10; H10F; H10F77/00; H10F77/10; H10F77/16; H10F77/169; H10F77/1692; C; C30; C30B; C30B13/00; C30B19/00; C30B29/00; C30B29/60; H10D; H10D99/00; H10F77/162; H10F77/164; H10F77/1642; H10P; H10P10/00; H10P10/12; H10P95/00; Y; Y02; Y02E; Y02E10/00; Y02E10/50; Y02E10/546; Y10; Y10S; Y10S148/00; Y10S148/051; Y10S148/071; Y10S148/107; Y10S148/122; Y10S148/15; Y10S148/152
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) | 1973-06-29 | 1973-12-29 | 1974-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-29 | 1977-12-29 | 1978-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-29 | 1981-12-29 | 1982-06-30 | $7700.00 | Window Closed / Lapsed |