Patent US2713749A successfully refreshed from Google Patents.
US2713749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soilless culture of plants using chemically treated ocean water
Assignee: Individual
•
Filing: 1951-08-06
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Granted: 1955-07-26
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Expires: 1971-08-06
Abstract
No abstract record available.
Inventors
- 👤 William A E Hult
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:21
CPC Classifications
C; C05; C05D; C05D9/00; A; A01; A01G; A01G31/00; Y; Y02; Y02P; Y02P60/00; Y02P60/20; Y02P60/21
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
25 words
A METHOD FOR HYDROPONIC CULTURE, COMPRISING PLACING A LAYER OF NUTRIENT SOLUTION IN A SEEDBED TANK, SAID NUTRIENT SOLUTION COMPRISING OCEAN WATER TREATED TO ELIM-
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) | 1958-07-25 | 1959-01-24 | 1959-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-25 | 1963-01-24 | 1963-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-25 | 1967-01-24 | 1967-07-26 | $7700.00 | Window Closed / Lapsed |