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US3100787A Expired / Lapsed US ⏱️ 0.0 years remaining

Basic aluminum salts of acetylsalicylate acid and a non-toxic water soluble acid

Assignee: Individual
•
Filing: 1960-05-10
•
Granted: 1963-08-13
•
Expires: 1980-05-10
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Abstract

No abstract record available.

Inventors

  • 👤 Jr Ludwig Adolph Staib

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 22:15
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/06; C07F5/069

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 74 words
AN ALUMINUM ASPIRIN COMPOSITION REPRESENTED BY THE AVERAGE FORMULA AL(R1)X(R2)Y(R3)Z, WHEREIN R1 REPRESENTS AN EQUIVALENT OF NON-TOXIC, WATER-SOLUBLE ACID ANION, DERIVED FROM AN ACID CHARACTERIZED BY A DISSOCIATION CONSTANT OF AT LEAST ABOUT 10-5, R2 REPRESENTS THE ANION OF ACETYLSALCYLIC ACID, AND R3 REPRESENTS HYDROXYL GROUPS, THE SUBSCRIPT X IS AT LEAST ABOUT 0.1, THE SUBSCRIPT Y IS AT LEAST ABOUT 0.5 AND THE SUBSCRIPT Z EQUALS 3-(X+Y) AND IS AT LEAST ABOUT 0.1.
Claim 2
Dependent Claim 74 words
AN ALUMINUM ASPIRIN COMPOSITION REPRESENTED BY THE AVERAGE FORMULA AL(R1)X(R2)Y(R3)Z, WHEREIN R1 REPRESENTS AN EQUIVALENT OF NON-TOXIC, WATER-SOLUBLE ACID ANION, DERIVED FROM AN ACID CHARACTERIZED BY A DISSOCIATION CONSTANT OF AT LEAST ABOUT 10-5, R2 REPRESENTS THE ANION OF ACETYLSALCYLIC ACID, AND R3 REPRESENTS HYDROXYL GROUPS, THE SUBSCRIPT X IS AT LEAST ABOUT 0.1, THE SUBSCRIPT Y IS AT LEAST ABOUT 0.5 AND THE SUBSCRIPT Z EQUALS 3-(X+Y) AND IS AT LEAST ABOUT 0.1.
Claim 3
Independent Claim 80 words
THE METHOD OF PRODUCING AN ALUMINUM ASPIRIN COMPOSITION SUBSTANTIALLY FREE OF UNREACTED ACETYLSALICYLIC ACID WHICH COMPRISES ADMIXING IN A SUBSTANTIALLY WATERFREE INERT ORGANIC SOLVENT AN ALUMINUM ALCOHOLATE WITH A BLE NON-TOXIC ACIDS CHARACTERIZED BY DISSOLCATION CONSTANTS BLE NON-TOXIC ACIDS CHARACTERIZED BY DISSOCIATION CONSTANTS OF AT LEAST ABOUT 10-5 AND THE ALUMINUM SALTS THEREOF; ADDING ACETYLSALICYLIC ACID TO THE MIXTURE AND THEREAFTER ADDING WATER TO THE MIXTURE AND HEATING AT A TEMPERATURE BELOW ABOUT 60*C. TO HYDROLYZE ANY UNREACTED ALCOHOLATE GROUPS.
Claim 4
Independent Claim 80 words
THE METHOD OF PRODUCING AN ALUMINUM ASPIRIN COMPOSITION SUBSTANTIALLY FREE OF UNREACTED ACETYLSALICYLIC ACID WHICH COMPRISES ADMIXING IN A SUBSTANTIALLY WATERFREE INERT ORGANIC SOLVENT AN ALUMINUM ALCOHOLATE WITH A BLE NON-TOXIC ACIDS CHARACTERIZED BY DISSOLCATION CONSTANTS BLE NON-TOXIC ACIDS CHARACTERIZED BY DISSOCIATION CONSTANTS OF AT LEAST ABOUT 10-5 AND THE ALUMINUM SALTS THEREOF; ADDING ACETYLSALICYLIC ACID TO THE MIXTURE AND THEREAFTER ADDING WATER TO THE MIXTURE AND HEATING AT A TEMPERATURE BELOW ABOUT 60*C. TO HYDROLYZE ANY UNREACTED ALCOHOLATE GROUPS.

References Cited (Backward Citations)

US2698332A Cited
GB806182A Cited
US2959606A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1966-08-12 1967-02-11 1967-08-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1970-08-12 1971-02-11 1971-08-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1974-08-12 1975-02-11 1975-08-13 $7700.00 Window Closed / Lapsed

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