US3045530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical system having aberration correcting plate member with ring shaped phase retarding layers
Assignee: National Institute of Advanced Industrial Science and Technology
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Filing: 1960-07-14
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Granted: 1962-07-24
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Expires: 1980-07-14
Abstract
No abstract record available.
Inventors
- 👤 Tsujiuchi Jumpei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:21
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/58; G02B27/0025; G02B27/0037; G02B5/00; G02B5/18; G02B5/1876; H; H01; H01J; H01J9/00; H01J9/20; H01J9/22; H01J9/227; H01J9/2271; H01J9/2272; H01J9/2273
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-23 | 1966-01-22 | 1966-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-23 | 1970-01-22 | 1970-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-23 | 1974-01-22 | 1974-07-24 | $7700.00 | Window Closed / Lapsed |