US2544706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphorus-and nitrogencontaining compounds
Assignee: Monsanto Chemicals Ltd
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Filing: 1948-08-12
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Granted: 1951-03-13
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Expires: 1968-08-12
Abstract
No abstract record available.
Inventors
- 👤 John E Malowan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:09
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/244; D06M13/282; D06M13/292; C; C05; C05B; C05B15/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
THE INSOLUBLE COMPLEX COMPOSITION OBTAINED BY THE HEATING OF 2 TO 4 MOLES OF MELAMINE AND ONE MOLE OF PHOSPHORUS PENTOXIDE TO A TEMPERATURE IN THE RANGE OF 300* C. TO 500* C.
Claim 2
Dependent Claim
33 words
THE INSOLUBLE COMPLEX COMPOSITION OBTAINED BY THE HEATING OF 2 TO 4 MOLES OF MELAMINE AND ONE MOLE OF PHOSPHORUS PENTOXIDE TO A TEMPERATURE IN THE RANGE OF 300* C. TO 500* C.
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) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |