US3303608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxygen production by photosynthesis of algae under pressure
Assignee: Individual
•
Filing: 1965-09-02
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Granted: 1967-02-14
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Expires: 1985-09-02
Abstract
No abstract record available.
Inventors
- 👤 Patrick J Hannan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:08
CPC Classifications
C; C01; C01B; C01B13/00; C01B13/02; A; A01; A01G; A01G33/00; B; B63; B63G; B63G8/00; B63G8/08; B64; B64G; B64G1/00; B64G1/22; B64G1/46; Y; Y02; Y02A; Y02A40/00; Y02A40/80; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/946
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A METHOD OF PRODUCING OXYGEN IN PHOTOSYNTHESIS TO ALGAE WHICH COMPRISES SUBJECTING AN ALGAL CULTURE IN THE LINEAR PHASE OF GROWTH TO AN APPLIED PRESSURE OF UP TO ABOUT 10 P.S.I. ABOVE ATMOSPHERIC WHILE PASSING AN AIR-CARBON DIOXIDE MIXTURE OF LOW CARBON DIOXIDE CONCENTRATION THROUGH SAID CULTURE AT AN INPUT RATE WHICH IS LESS THAN THE SATURATION CARBON DIOXIDE RATE THEREFOR.
Claim 2
Independent Claim
61 words
A METHOD OF PRODUCING OXYGEN IN PHOTOSYNTHESIS TO ALGAE WHICH COMPRISES SUBJECTING AN ALGAL CULTURE IN THE LINEAR PHASE OF GROWTH TO AN APPLIED PRESSURE OF UP TO ABOUT 10 P.S.I. ABOVE ATMOSPHERIC WHILE PASSING AN AIR-CARBON DIOXIDE MIXTURE OF LOW CARBON DIOXIDE CONCENTRATION THROUGH SAID CULTURE AT AN INPUT RATE WHICH IS LESS THAN THE SATURATION CARBON DIOXIDE RATE THEREFOR.
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) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |