US2723217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dentifrice composition containing tyrothricin
Assignee: Lever Brothers Co
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Filing: 1952-06-17
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Granted: 1955-11-08
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Expires: 1972-06-17
Abstract
No abstract record available.
Inventors
- 👤 Sol D Gershon
- 👤 Oscar W Neiditch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:32
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/70; A61K8/00; A61K8/18; A61K8/30; A61K8/64; A61Q; A61Q11/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A PASTE DENTIFICE COMPRISING FROM ABOUT 0.005 TO ABOUT 0.5% OF TYROTHRICIN AND FROM ABOUT 20 TO ABOUT 80% OF A MIXTURE OF POLISHING AGENT S COMPRISING FROM ABOUT 1 TO 76% OF AN INSOLUBLE SALT OF A POLYMETAPHOSPHORIC ACID, AND FROM ABOUT 76 TO ABOUT 1% OF A MEMBER OF THE GROUP CONSISTING OF CALCIUM AND MAGNESIUM PHOSPHATES AND CARBONATES.
Claim 2
Dependent Claim
61 words
A PASTE DENTIFICE COMPRISING FROM ABOUT 0.005 TO ABOUT 0.5% OF TYROTHRICIN AND FROM ABOUT 20 TO ABOUT 80% OF A MIXTURE OF POLISHING AGENT S COMPRISING FROM ABOUT 1 TO 76% OF AN INSOLUBLE SALT OF A POLYMETAPHOSPHORIC ACID, AND FROM ABOUT 76 TO ABOUT 1% OF A MEMBER OF THE GROUP CONSISTING OF CALCIUM AND MAGNESIUM PHOSPHATES AND CARBONATES.
References Cited (Backward Citations)
US2019142A
Cited
US2191199A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-07 | 1959-05-09 | 1959-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-07 | 1963-05-09 | 1963-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-07 | 1967-05-09 | 1967-11-08 | $7700.00 | Window Closed / Lapsed |