US2827453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3-phthalimido pentosides and derivatives
Assignee: Wyeth Holdings LLC
•
Filing: 1955-01-26
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Granted: 1958-03-18
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Expires: 1975-01-26
Abstract
No abstract record available.
Inventors
- 👤 Baker Bernard Randall
- 👤 Joseph Joseph Peter
- 👤 Schaub Robert Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:37
CPC Classifications
C; C07; C07H; C07H19/00; C07H19/02; C07H19/04; C07H19/044
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
5 words
COMPOUNDS HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
5 words
COMPOUNDS HAVING THE GENERAL FORMULA:
Claim 3
Independent Claim
9 words
A METHOD FOR PREPARING COMPOUNDS HAVING THE GENERAL FORMULA:
Claim 4
Independent Claim
9 words
A METHOD FOR PREPARING 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) | 1961-03-17 | 1961-09-16 | 1962-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-17 | 1965-09-16 | 1966-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-17 | 1969-09-16 | 1970-03-18 | $7700.00 | Window Closed / Lapsed |