US3134719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Calcium phosphates in tablet compressing
Assignee: Wyeth Holdings LLC
•
Filing: 1962-04-05
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Granted: 1964-05-26
•
Expires: 1982-04-05
Abstract
No abstract record available.
Inventors
- 👤 Sheth Prabhakar Ranchhordas
- 👤 Wiley James Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:29
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/20; A61K9/2004; A61K9/2009
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
THE PROCESS OF PREPARING TABLETS OF THERAPEUTIC MATERIALS COMPRISING THE STEPS OF MIXING A NON-GRANULATED THERAPEUTIC MATERIAL WITH NOT LESS THAN ABOUT 20% BY WEIGHT OF CALCIUM SALTS OF PHOSPHORIC ACID, AT LEAST ABOUT 25% BY WEIGHT OF SAID CALCIUM SALTS HAVING PARTICLE SIZES GREATER THAN 125 MICRONS, AND FORMING THE MIXTURE THUS OBTAINED INTO TABLETS BY COMPRESSION.
Claim 2
Dependent Claim
58 words
THE PROCESS OF PREPARING TABLETS OF THERAPEUTIC MATERIALS COMPRISING THE STEPS OF MIXING A NON-GRANULATED THERAPEUTIC MATERIAL WITH NOT LESS THAN ABOUT 20% BY WEIGHT OF CALCIUM SALTS OF PHOSPHORIC ACID, AT LEAST ABOUT 25% BY WEIGHT OF SAID CALCIUM SALTS HAVING PARTICLE SIZES GREATER THAN 125 MICRONS, AND FORMING THE MIXTURE THUS OBTAINED INTO TABLETS BY COMPRESSION.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-26 | 1967-11-25 | 1968-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-26 | 1971-11-25 | 1972-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-26 | 1975-11-25 | 1976-05-26 | $7700.00 | Window Closed / Lapsed |