US2904466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preservative composition comprising tetraalkali metal pyrophosphate, a polychlorophenate and a heavy metal salt
Assignee: Monsanto Chemicals Ltd
•
Filing: 1956-09-06
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Granted: 1959-09-15
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Expires: 1976-09-06
Abstract
No abstract record available.
Inventors
- 👤 Songe S Sakornbut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:40
CPC Classifications
B; B27; B27K; B27K3/00; B27K3/52; A; A01; A01N; A01N31/00; A01N31/08; A01N31/10; B27K3/16; B27K3/166; B27K3/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
24 words
A PRESERVATIVE COMPOSITION WHICH COMPRISES AN AQUEOUS SOLUTION OF A TETRAALKALI METAL PYROPHOSPHATE CONTAINING DISSOLVED THEREIN A WATER-SOLUBLE POLYCHLOROPHENATE AND A HEAVY METAL SALT.
Claim 2
Dependent Claim
24 words
A PRESERVATIVE COMPOSITION WHICH COMPRISES AN AQUEOUS SOLUTION OF A TETRAALKALI METAL PYROPHOSPHATE CONTAINING DISSOLVED THEREIN A WATER-SOLUBLE POLYCHLOROPHENATE AND A HEAVY METAL SALT.
References Cited (Backward Citations)
US1057076A
Cited
US2086867A
Cited
US2229420A
Cited
US2322633A
Cited
US2637661A
Cited
GB650832A
Cited
US2856330A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |