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Patent US2717899A successfully refreshed from Google Patents.
US2717899A
Expired / Lapsed
US
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Aminoalkyl and quaternary ammonium alkyl esters of o-aroyl benzoic acids
Assignee: The SE Massengill Co
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Filing: 1952-05-26
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Granted: 1955-09-13
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Expires: 1972-05-26
Abstract
No abstract record available.
Inventors
- 👤 Georg E Cronheim
- 👤 Norman H Leake
- 👤 Marvel L Fielden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:28
CPC Classifications
C; C07; C07C; C07C65/00; C07C65/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
THE COMPOUNDS HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
6 words
THE COMPOUNDS HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-12 | 1959-03-14 | 1959-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-12 | 1963-03-14 | 1963-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-12 | 1967-03-14 | 1967-09-13 | $7700.00 | Window Closed / Lapsed |