US2903464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quaternary ammonium compounds
Assignee: CIBA PHARM PROD Inc
•
Filing: 1956-10-24
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Granted: 1959-09-08
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Expires: 1976-10-24
Abstract
No abstract record available.
Inventors
- 👤 Werner Lincoln Harvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:11
CPC Classifications
C; C07; C07D; C07D319/00; C07D319/10; C07D319/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
N,N,N - TRIMETHYL - AMMONIUM - METHYL - 1,4-DIOXANE CHLORIDE.
Claim 2
Dependent Claim
10 words
N,N,N - TRIMETHYL - AMMONIUM - METHYL - 1,4-DIOXANE CHLORIDE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |