Patent US2541015A successfully refreshed from Google Patents.
US2541015A
Expired / Lapsed
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Preparation of hydroxy cyclammonium quaternary salts
Assignee: Eastman Kodak Co
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Filing: 1948-04-03
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Granted: 1951-02-13
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Expires: 1968-04-03
Abstract
No abstract record available.
Inventors
- 👤 Earl J Van Lare
- 👤 Leslie G S Brooker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:34
CPC Classifications
C; C09; C09B; C09B23/00; C09B23/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
A PROCESS FOR PREPARING A HYDROXY CYCLAMMONIUM QUATERNARY SALT COMPRISING HYDROLYZING AT A TEMPERATURE OF FROM 80* TO 150* C., IN THE PRESENCE OF HYDROBROMIC ACID, AN ALKOXY CYCLAMMONIUM ALKIODIDE SELECTED FROM THE GROUP CONSISTING OF THOSE REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
43 words
A PROCESS FOR PREPARING A HYDROXY CYCLAMMONIUM QUATERNARY SALT COMPRISING HYDROLYZING AT A TEMPERATURE OF FROM 80* TO 150* C., IN THE PRESENCE OF HYDROBROMIC ACID, AN ALKOXY CYCLAMMONIUM ALKIODIDE SELECTED FROM THE GROUP CONSISTING OF THOSE REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
US2332517A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-12 | 1954-08-14 | 1955-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-12 | 1958-08-14 | 1959-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-12 | 1962-08-14 | 1963-02-13 | $7700.00 | Window Closed / Lapsed |