US3481711A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crystal growth apparatus
Assignee: NEC Corp
•
Filing: 1965-08-03
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Granted: 1969-12-02
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Expires: 1985-08-03
Abstract
No abstract record available.
Inventors
- 👤 Mitsuhiro Maruyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:45
CPC Classifications
C; C22; C22F; C22F1/00; C30; C30B; C30B11/00; C30B11/007; C30B13/00; C30B13/28; C30B13/30; C30B13/32; C30B15/00; C30B15/20; C30B15/30; C30B15/32; C30B19/00; C30B19/10; C30B31/00; C30B31/06; C30B31/10; C30B31/103; Y; Y10; Y10S; Y10S117/00; Y10S117/90; Y10S117/917; Y10T; Y10T117/00; Y10T117/10; Y10T117/1004; Y10T117/1008; Y10T117/1012; Y10T117/1024; Y10T117/1032; Y10T117/1064; Y10T117/1092
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) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |