Patent US2623901A successfully refreshed from Google Patents.
US2623901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of choline chloride
Assignee: Nopco Chemical Co
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Filing: 1950-01-28
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Granted: 1952-12-30
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Expires: 1970-01-28
Abstract
No abstract record available.
Inventors
- 👤 Howard C Klein
- 👤 Kapp Roland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:11
CPC Classifications
C; C07; C07C; C07C215/00; C07C215/02; C07C215/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
15 words
A PROCESS FOR THE PRODUCTION OF CHOLINE CHLORIDE COMPRISING REACTING AQUEOUS TRIMETHYLAMINE WITH ETHYLENE CHLORHYDRIN.
Claim 2
Dependent Claim
15 words
A PROCESS FOR THE PRODUCTION OF CHOLINE CHLORIDE COMPRISING REACTING AQUEOUS TRIMETHYLAMINE WITH ETHYLENE CHLORHYDRIN.
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) | 1955-12-30 | 1956-06-30 | 1956-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-30 | 1960-06-30 | 1960-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-30 | 1964-06-30 | 1964-12-30 | $7700.00 | Window Closed / Lapsed |