US3467896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heterojunctions and domain control in bulk negative conductivity semiconductors
Assignee: Varian Medical Systems Inc
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Filing: 1966-03-28
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Granted: 1969-09-16
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Expires: 1986-03-28
Abstract
No abstract record available.
Inventors
- 👤 Herbert Kroemer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:21
CPC Classifications
H; H10; H10N; H10N80/00; H10N80/10; H10N80/107; H10P; H10P95/00; Y; Y10; Y10S; Y10S148/00; Y10S148/065; Y10S148/067; Y10S148/072
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) | 1972-09-15 | 1973-03-17 | 1973-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-15 | 1977-03-17 | 1977-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-15 | 1981-03-17 | 1981-09-16 | $7700.00 | Window Closed / Lapsed |