US2933530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing quaternary ammonium compounds
Assignee: US Philips Corp
•
Filing: 1956-10-19
•
Granted: 1960-04-19
•
Expires: 1976-10-19
Abstract
No abstract record available.
Inventors
- 👤 Kralt Teunis
- 👤 Jan Van Dijk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:10
CPC Classifications
C; C07; C07C; C07C211/00; C07C211/62; C07C211/63; C07B; C07B59/00; C07B59/001; C07B2200/00; C07B2200/05
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
8 words
QUATERNARY AMMONIUM COMPOUNDS CORRESPONDING TO THE GENERAL FORMULA:
Claim 2
Dependent Claim
8 words
QUATERNARY AMMONIUM COMPOUNDS CORRESPONDING TO THE GENERAL FORMULA:
Claim 3
Dependent Claim
3 words
N,N,N-TRIETHYL,N-(1-METHYL-3-(2'',6'',6''TRIMETHYLCYCLOHEXENEE-1'' -YL)PROPYL)AMMONIUM IODIDE.
Claim 4
Dependent Claim
3 words
N,N,N-TRIETHYL,N-(1-METHYL-3-(2'',6'',6''TRIMETHYLCYCLOHEXENEE-1'' -YL)PROPYL)AMMONIUM IODIDE.
References Cited (Backward Citations)
US2230752A
Cited
US2230753A
Cited
US2483381A
Cited
US2483382A
Cited
US2647122A
Cited
GB677197A
Cited
US2692285A
Cited
US2775617A
Cited
US2736746A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |