US3538217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenolic germicidal compositions
Assignee: Calgon Corp
•
Filing: 1969-04-02
•
Granted: 1970-11-03
•
Expires: 1989-04-02
Abstract
No abstract record available.
Inventors
- 👤 Norman Ellison Dewar
- 👤 Said Ibrahim Razio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:46
CPC Classifications
A; A01; A01N; A01N25/00; A01N25/30; C; C07; C07C; C07C309/00; C07C309/01; C07C309/02; C07C309/03; C07C309/07; C07C309/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2191405A
Cited
US2874087A
Cited
US3063895A
Cited
US3155568A
Cited
US3224976A
Cited
US3223643A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-02 | 1974-05-04 | 1974-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-02 | 1978-05-04 | 1978-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-02 | 1982-05-04 | 1982-11-03 | $7700.00 | Window Closed / Lapsed |