Patent US2851484A successfully refreshed from Google Patents.
US2851484A
Expired / Lapsed
US
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Production of aminoalkyl sulfonic acids and aminoalkanols
Assignee: Ruhrchemie AG
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Filing: 1956-10-16
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Granted: 1958-09-09
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Expires: 1976-10-16
Abstract
No abstract record available.
Inventors
- 👤 Feichtinger Hans
- 👤 Puschhof Siegfried
- 👤 Tummes Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:03
CPC Classifications
C; C07; C07C; C07C309/00; C07C309/01; C07C309/02; C07C309/03; C07C309/13; C07C309/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
PROCESS FOR THE CONVERSION OF COMPOUNDS OF THE GENERAL FORMULA
Claim 2
Dependent Claim
10 words
PROCESS FOR THE CONVERSION OF COMPOUNDS OF THE GENERAL FORMULA
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) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |