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Patent US3106557A successfully refreshed from Google Patents.
US3106557A
Expired / Lapsed
US
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Process for the preparation of nu-phenylpiperazines
Assignee: Union Carbide Corp
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Filing: 1960-07-20
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Granted: 1963-10-08
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Expires: 1980-07-20
Abstract
No abstract record available.
Inventors
- 👤 Poppelsdorf Fedor
- 👤 Richard C Myerly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:23
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/02; C07D295/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
IN THE PROCESS FOR PREPARING N-ARYLPIPERAZINES BY THE PYROLYSIS OF A HYDROHALIDE OF AN AROMATIC AMINE OF THE GROUP CONSISTING OF ALPHA-NAPHTHYLAMINE, BETANAPHTHYLAMINE, 2-AMINO-7-OCTYL-NAPHTHALENE AND AMINES OF THE FORMULA
Claim 2
Dependent Claim
29 words
IN THE PROCESS FOR PREPARING N-ARYLPIPERAZINES BY THE PYROLYSIS OF A HYDROHALIDE OF AN AROMATIC AMINE OF THE GROUP CONSISTING OF ALPHA-NAPHTHYLAMINE, BETANAPHTHYLAMINE, 2-AMINO-7-OCTYL-NAPHTHALENE AND AMINES OF THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-07 | 1967-04-08 | 1967-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-07 | 1971-04-08 | 1971-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-07 | 1975-04-08 | 1975-10-08 | $7700.00 | Window Closed / Lapsed |