US2773796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of protecting plants from fungi by applying hydrazine salts of inorganic phosphorous acids
Assignee: Shell Development Co
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Filing: 1953-09-16
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Granted: 1956-12-11
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Expires: 1973-09-16
Abstract
No abstract record available.
Inventors
- 👤 Hackmann Johannes Thomas
- 👤 Dierick Gerarda Francisc Maria
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:38
CPC Classifications
A; A01; A01N; A01N59/00; A01N59/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A METHOD FOR PROTECTING PLANTS FROM DESTRUCTION BY FUNGI WHICH COMPRISES APPLYING TO THE PLANTS THE HYDRAZINE SALT OF AN INORGANIC PHOSPHORUS ACID SELECTED FROM THE GROUP CONSISTING OF PHOSPHORIC ACID, PHOSPHOROUS ACID, HYPOPHOSPHORIC ACID, AND PYROPHOSPHORIC ACID IN AN AMOUNT TOXIC TO SAID FUNGI, SAID HYDRAZINE SALT HAVING A MOLE RATIO OF ACID TO HYDRAZINE FROM 0.5:1 TO 2:1 AND BEING ESSENTIALLY FREE OF METAL CONSTITUENTS.
Claim 2
Independent Claim
67 words
A METHOD FOR PROTECTING PLANTS FROM DESTRUCTION BY FUNGI WHICH COMPRISES APPLYING TO THE PLANTS THE HYDRAZINE SALT OF AN INORGANIC PHOSPHORUS ACID SELECTED FROM THE GROUP CONSISTING OF PHOSPHORIC ACID, PHOSPHOROUS ACID, HYPOPHOSPHORIC ACID, AND PYROPHOSPHORIC ACID IN AN AMOUNT TOXIC TO SAID FUNGI, SAID HYDRAZINE SALT HAVING A MOLE RATIO OF ACID TO HYDRAZINE FROM 0.5:1 TO 2:1 AND BEING ESSENTIALLY FREE OF METAL CONSTITUENTS.
References Cited (Backward Citations)
US2659688A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |