Patent US3725547A successfully refreshed from Google Patents.
US3725547A
Expired / Lapsed
US
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Synergistic antibacterial combination
Assignee: Procter and Gamble Co
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Filing: 1970-10-08
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Granted: 1973-04-03
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Expires: 1990-10-08
Abstract
Abstract Antibacterial compositions containing a combination of the zinc salt of 1-hydroxy-2-pyridinethione and 2,4,4''-trichloro-2''hydroxydiphenyl ether, in a ratio of from about 9:1 to about 1:9 respectively, said combination possessing a synergistic activity permitting use at low concentrations.
Inventors
- 👤 J Kooistra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:11
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/48; A; A01; A01N; A01N43/00; A01N43/34; A01N43/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3235455A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |