Patent US2970056A successfully refreshed from Google Patents.
US2970056A
Expired / Lapsed
US
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Anti-caking powdered preparation and method of preparing the same
Assignee: Merck and Co Inc
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Filing: 1958-11-28
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Granted: 1961-01-31
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Expires: 1978-11-28
Abstract
No abstract record available.
Inventors
- 👤 William L Benson
- 👤 Raymond J Lapierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:41
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/48; A61K9/50; A23; A23P; A23P10/00; A23P10/30; A23P10/40; A23P10/43; A61K47/00; A61K47/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
THE METHOD OF TREATING FINELY DEVIDED, SOLID, EDIBLE AND MEDICINAL MATERIALS HAVING A TENDENCY TO SELF-AGGLOMERATE, TO INHIBIT SAID TENDENCY, WHICH COMPRISES APPLYING TO THE PARTICLES OF THE MATERIAL A COATING OF AERATED SILICA GEL IN AN AMOUNT WITHIN THE RANGE FROM ABOUT 0.1 PERCENT TO ABOUT 6 PERCENT, BY WEIGHT, OF THE TOTAL.
Claim 2
Independent Claim
54 words
THE METHOD OF TREATING FINELY DEVIDED, SOLID, EDIBLE AND MEDICINAL MATERIALS HAVING A TENDENCY TO SELF-AGGLOMERATE, TO INHIBIT SAID TENDENCY, WHICH COMPRISES APPLYING TO THE PARTICLES OF THE MATERIAL A COATING OF AERATED SILICA GEL IN AN AMOUNT WITHIN THE RANGE FROM ABOUT 0.1 PERCENT TO ABOUT 6 PERCENT, BY WEIGHT, OF THE TOTAL.
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) | 1964-01-31 | 1964-08-01 | 1965-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-31 | 1968-08-01 | 1969-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-31 | 1972-08-01 | 1973-01-31 | $7700.00 | Window Closed / Lapsed |