Patent US3502752A successfully refreshed from Google Patents.
US2732663A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for photosynthesis
Assignee: —
•
Filing: —
•
Granted: 1956-01-31
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Expires: 1973-01-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:48
CPC Classifications
A; A01; A01G; A01G33/00; C; C12; C12M; C12M21/00; C12M21/02; C12M23/00; C12M23/02; C12M23/06; C12M23/18; C12M23/26; C12M41/00; C12M41/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A DEVICE FOR LARGE SCALE CULTURE OF PHOTOSYNTHETIC MICROORGANISMS COMPRISING A LIGHT-PERMEABLE FLEXIBLE LIMP TUBE, MEANS FOR SUPPORTING SAID TUBE IN AN APPROXIMATELY HORIZONTAL POSITION, MEANS FOR INTRODUCING A LIQUID CULTURE MEDIUM INTO ONE END OF SAID APPROXIMATELY HORIZONTAL TUBE AND THEREBY DISTENDING SAID TUBE INTO A CROSS-SECTIONAL SHAPE HAVING A PREDETERMINED HEIGHT AND
Claim 2
Independent Claim
54 words
A DEVICE FOR LARGE SCALE CULTURE OF PHOTOSYNTHETIC MICROORGANISMS COMPRISING A LIGHT-PERMEABLE FLEXIBLE LIMP TUBE, MEANS FOR SUPPORTING SAID TUBE IN AN APPROXIMATELY HORIZONTAL POSITION, MEANS FOR INTRODUCING A LIQUID CULTURE MEDIUM INTO ONE END OF SAID APPROXIMATELY HORIZONTAL TUBE AND THEREBY DISTENDING SAID TUBE INTO A CROSS-SECTIONAL SHAPE HAVING A PREDETERMINED HEIGHT AND
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-30 | 1959-08-01 | 1960-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-30 | 1963-08-01 | 1964-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-30 | 1967-08-01 | 1968-01-31 | $7700.00 | Window Closed / Lapsed |