Patent US2662915A successfully refreshed from Google Patents.
US2662915A
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Alpha-amino acids containing alpha, fluorinated-alkyl or cycloalkyl groups
Assignee: EIDP Inc
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Filing: 1952-06-30
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Granted: 1953-12-15
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Expires: 1972-06-30
Abstract
No abstract record available.
Inventors
- 👤 Lontz John Frank
- 👤 Raasch Maynard Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:58
CPC Classifications
A; A01; A01N; A01N37/00; A01N37/44; C; C07; C07D; C07D233/00; C07D233/54; C07D233/66; C07D233/72; C07D233/76
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
AN AMINOCARBOXYLIC ACID WHEREIN A CARBON ALPHA TO A CARBOXYL CARRIES AN AMINO GROUP AND A RADICAL FROM THE GROUP CONSISTING OF FLUOROALKYL AND FLUOROCYCLOALKYL RADICALS.
Claim 2
Dependent Claim
26 words
AN AMINOCARBOXYLIC ACID WHEREIN A CARBON ALPHA TO A CARBOXYL CARRIES AN AMINO GROUP AND A RADICAL FROM THE GROUP CONSISTING OF FLUOROALKYL AND FLUOROCYCLOALKYL RADICALS.
References Cited (Backward Citations)
US2441128A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |