Patent US3577492A successfully refreshed from Google Patents.
US3577492A
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US
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Tableting lubricant
Assignee: Bayer Corp
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Filing: 1969-12-29
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Granted: 1971-05-04
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Expires: 1989-12-29
Abstract
Abstract AN IMPROVEMENT IN THE PROCESS OF COMPRESSING POWDERED TABLETABLE MATERIALS IS GAINED BY MIXING WITH SAID MATERIALS PRIOR TO TABLETING, A LUBRICANT COMPRISING, IN COMBINATION, A SILOXANE POLYMER AND DRY-MIXABLE PARTICLES OF A LUBRICATING OIL COATED WITH AN OIL-INSOLUBLE FILMFORMING SUBSTANCE. THE LUBRICANT ACTS AS BOTH A PUNCH FACE LUBRICANT AND AS A DIEWALL LUBRICANT FOR SAID TABLETABLE MATERIALS. THE POWDERED TABLETABLE MATERIALS LUBRICATED WITH THE ABOVE LUBRICANT CAN BE THOSE INTENDED FOR GENERAL CLEANING OF SOLID SURFACES OR THOSE INTENDED FOR THERAPEUTIC EMPLOYMENTS.
Inventors
- 👤 Thomas Laurence Welsh
- 👤 George Ronald Tomaich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:53
CPC Classifications
B; B30; B30B; B30B15/00; B30B15/0005; B30B15/0011; A; A61; A61K; A61K9/00; A61K9/0002; A61K9/0007; A61K9/20; A61K9/2004; A61K9/48; A61K9/50
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) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |