Patent US3015657A successfully refreshed from Google Patents.
US3015657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-carbalkoxy-4-(aminoalkanol) piperazines
Assignee: Individual
•
Filing: 1959-05-28
•
Granted: 1962-01-02
•
Expires: 1979-05-28
Abstract
No abstract record available.
Inventors
- 👤 Charles F Geschickter
- 👤 John S Pierce
- 👤 Ying H Chen
- 👤 Ebenezer E Reid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:07
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/16; C07D295/20; C07D295/205
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
12 words
COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF (1) THOSE HAVING THE FORMULA
Claim 2
Dependent Claim
12 words
COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF (1) THOSE HAVING THE FORMULA
Claim 3
Dependent Claim
2 words
THE COMPOUND
Claim 4
Dependent Claim
2 words
THE COMPOUND
References Cited (Backward Citations)
US2870145A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-01 | 1965-07-03 | 1966-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-01 | 1969-07-03 | 1970-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-01 | 1973-07-03 | 1974-01-02 | $7700.00 | Window Closed / Lapsed |