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Patent US3578656A successfully refreshed from Google Patents.
US3578656A
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US
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Method of making allantoin polygalacturonic acid compounds
Assignee: INDUSTRIAL NATIONAL BANK OF RHODE ISLAND A NATIONAL BANKING ASSOCIATION
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Filing: 1969-02-24
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Granted: 1971-05-11
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Expires: 1989-02-24
Abstract
Abstract ALLANTOIN POLYGALACTURONIC ACID COMPOUNDS ARE PREPARED BY DISSOLVING A SALT OF ALLANTOIN AND SALT OF POLYGALACTURONIC ACID IN WATER CONTAINING A BASE, LOWERING THE PH OF THE RESULTING SOLUTION WITH AN ACID OR AN ALUMINUM SALT TO PRECIPITATE ALLANTOIN POLYGALACTURONIC ACID WHEN AN ACID IS USED OR ALUMINUM ALLANTOIN POLYGALACTURONATE WHEN AN ALUMINUM SALT IS USED, AND RECOVERING THE PRECIPITATE.
Inventors
- 👤 Sebastian B Mecca
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:15
CPC Classifications
C; C08; C08B; C08B37/00; C08B37/0006; C08B37/0045; C07; C07D; C07D233/00; C07D233/54; C07D233/66; C07D233/88
Claims Analysis
Total Claims: 0
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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) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |