Patent US3007627A successfully refreshed from Google Patents.
US2987474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of concentrated dispersions of basic aluminum salts
Assignee: Wyeth Holdings LLC
•
Filing: 1957-03-21
•
Granted: 1961-06-06
•
Expires: 1977-03-21
Abstract
No abstract record available.
Inventors
- 👤 Wilson Abraham
- 👤 O'brien Samuel James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:08
CPC Classifications
C; C01; C01F; C01F7/00; C01F7/66; C01F7/48; C01F7/56; C01F7/57; C01F7/68; C01F7/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A PROCESS FOR PREPARING CONCENTRATED AQUEOUS DISPERSIONS CONTAINING FROM BETWEEN 7.5 AND 25% OF A WATER INSOLUBLE BASIC ALUMINUM SALT OF AN INORGANIC MINERAL ACID, WHICH COMPRISES ADDING WITH STIRRING A WATER SOLUBLE ALUMINUM SALT OF AN INORGANIC MINERAL ACID TO A WATER SOLUBLE INORGANIC ALKALINE MATERIAL UNTIL AN AQUEOUS DISPERSION HAVING A PH BETWEEN ABOUT 6.5 AND 8 CONTAINING SAID BASIC ALUMINUM SALT IS OBTAINED, SAID ALKALINE MATERIAL AND SAID WATER SOLUBLE ALUMINUM SALT BEING EMPLOYED IN RELATIVE EQUIVALENT AMOUNTS OF FROM BETWEEN ABOUT 1.5 AND ABOUT 2.9 EQUIVALENT OF SAID ALKALINE MATERIAL FOR 3 EQUIVALENTS OF THE SOLUBLE ALUMINUM SALT.
Claim 2
Dependent Claim
102 words
A PROCESS FOR PREPARING CONCENTRATED AQUEOUS DISPERSIONS CONTAINING FROM BETWEEN 7.5 AND 25% OF A WATER INSOLUBLE BASIC ALUMINUM SALT OF AN INORGANIC MINERAL ACID, WHICH COMPRISES ADDING WITH STIRRING A WATER SOLUBLE ALUMINUM SALT OF AN INORGANIC MINERAL ACID TO A WATER SOLUBLE INORGANIC ALKALINE MATERIAL UNTIL AN AQUEOUS DISPERSION HAVING A PH BETWEEN ABOUT 6.5 AND 8 CONTAINING SAID BASIC ALUMINUM SALT IS OBTAINED, SAID ALKALINE MATERIAL AND SAID WATER SOLUBLE ALUMINUM SALT BEING EMPLOYED IN RELATIVE EQUIVALENT AMOUNTS OF FROM BETWEEN ABOUT 1.5 AND ABOUT 2.9 EQUIVALENT OF SAID ALKALINE MATERIAL FOR 3 EQUIVALENTS OF THE SOLUBLE ALUMINUM SALT.
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) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |