US2531360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fertilizer block for fertilizing plant life in fishing waters
Assignee: PPG Architectural Coatings Canada Inc
•
Filing: 1947-02-26
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Granted: 1950-11-21
•
Expires: 1967-02-26
Abstract
No abstract record available.
Inventors
- 👤 Martin Arthur Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:14
CPC Classifications
C; C05; C05D; C05D9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A PROCESS FOR THE PRODUCTION OF A COHERENT SOLID FERTILIZER BLOCK WITH CONSISTS IN SUBJECTING A MIXTURE OF 100 PARTS OF AMMONIUM PHOSPHATE, 35 PARTS OF AMMONIUM NITRATE, 40 PARTS OF MURIATE OF POTASH AND 20 PARTS OF GRANULAR DOLOMITIC LIMESTONE INTIMATELY ADMIXED WITH 5 PARTS OF CYANAMIDE AS A BINDER TO A PRESSURE OF ABOUT 15,000 LBS. PER SQUARE INCH.
Claim 2
Dependent Claim
61 words
A PROCESS FOR THE PRODUCTION OF A COHERENT SOLID FERTILIZER BLOCK WITH CONSISTS IN SUBJECTING A MIXTURE OF 100 PARTS OF AMMONIUM PHOSPHATE, 35 PARTS OF AMMONIUM NITRATE, 40 PARTS OF MURIATE OF POTASH AND 20 PARTS OF GRANULAR DOLOMITIC LIMESTONE INTIMATELY ADMIXED WITH 5 PARTS OF CYANAMIDE AS A BINDER TO A PRESSURE OF ABOUT 15,000 LBS. PER SQUARE INCH.
References Cited (Backward Citations)
GB189421143A
Cited
GB189730683A
Cited
GB191113504A
Cited
US1747804A
Cited
US2019824A
Cited
US1947971A
Cited
US1988307A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |