Patent US2652381A successfully refreshed from Google Patents.
US2652381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric compositions
Assignee: Monsanto Chemicals Ltd
•
Filing: 1952-08-23
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Granted: 1953-09-15
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Expires: 1972-08-23
Abstract
No abstract record available.
Inventors
- 👤 Costas H Basdekis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:50
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/44; Y; Y10; Y10S; Y10S260/00; Y10S260/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A PULVERULENT SUBSTANTIALY DRY MIXTURE OF A CALCUIM SALT OF A POLYMER OF ACRYLIC ACID AND A WATER-SOLUBLE SODIUM COMPOUND, WHICH WILL PRECIPITATE A WATER-INSOLUBLE CALCIUM SALT IN THE PRESENCE OF A WATER-SOLUBLE CALCIUM COMPOUND.
Claim 2
Dependent Claim
35 words
A PULVERULENT SUBSTANTIALY DRY MIXTURE OF A CALCUIM SALT OF A POLYMER OF ACRYLIC ACID AND A WATER-SOLUBLE SODIUM COMPOUND, WHICH WILL PRECIPITATE A WATER-INSOLUBLE CALCIUM SALT IN THE PRESENCE OF A WATER-SOLUBLE CALCIUM COMPOUND.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-14 | 1957-03-16 | 1957-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-14 | 1961-03-16 | 1961-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-14 | 1965-03-16 | 1965-09-15 | $7700.00 | Window Closed / Lapsed |