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US2560531A
Expired / Lapsed
US
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Hemimercaptals
Assignee: American Home Foods Inc
•
Filing: 1947-08-22
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Granted: 1951-07-17
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Expires: 1967-08-22
Abstract
No abstract record available.
Inventors
- 👤 Kipnis Frank
- 👤 Ornfelt John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:02
CPC Classifications
C; C07; C07B; C07B45/00; C07B45/06; C07C; C07C323/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
4 words
HEMIMERCAPTALS HAVING THE FORMULA:
Claim 2
Dependent Claim
4 words
HEMIMERCAPTALS HAVING THE FORMULA:
References Cited (Backward Citations)
US2305620A
Cited
US2327966A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-16 | 1955-01-15 | 1955-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-16 | 1959-01-15 | 1959-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-16 | 1963-01-15 | 1963-07-17 | $7700.00 | Window Closed / Lapsed |