US3737522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oral compositions for calculus retardation
Assignee: Procter and Gamble Co
•
Filing: 1970-06-30
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Granted: 1973-06-05
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Expires: 1990-06-30
Abstract
Abstract ORAL COMPOSITIONS, SUCH AS TOOTHPASTE, MOUTHWASH, AND THE LIKE, CONTAINING CERTAIN CARBONYLDIPHOSPHONATES AS HEREIN DEFINED WHICH RETARD DENTAL CALCULUS FORMATION WITHOUT DAMAGING TOOTH STRUCTURE.
Inventors
- 👤 M Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:35
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/55; A61Q; A61Q11/00
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) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |