US3350439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing aminoalkanenitriles
Assignee: Millennium Petrochemicals Inc
•
Filing: 1965-06-01
•
Granted: 1967-10-31
•
Expires: 1985-06-01
Abstract
No abstract record available.
Inventors
- 👤 Feldman Julian
- 👤 Thomas Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:20
CPC Classifications
C; C07; C07C; C07C255/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
A PROCESS FOR PREPARING ALPHA-ALKYL-OMEGA AMINOALKANENITRILES WHICH COMPRISES THE FOLLOWING SEQUENTIAL STEPS: (A) CONTACTING A DINITRILE COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
20 words
A PROCESS FOR PREPARING ALPHA-ALKYL-OMEGA AMINOALKANENITRILES WHICH COMPRISES THE FOLLOWING SEQUENTIAL STEPS: (A) CONTACTING A DINITRILE COMPOUND HAVING THE FORMULA
References Cited (Backward Citations)
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US2257814A
Cited
US2532312A
Cited
US2606204A
Cited
US2762835A
Cited
US2999107A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-30 | 1971-05-01 | 1971-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-30 | 1975-05-01 | 1975-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-30 | 1979-05-01 | 1979-10-31 | $7700.00 | Window Closed / Lapsed |