US3387032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of methylamines
Assignee: Individual
•
Filing: 1965-06-08
•
Granted: 1968-06-04
•
Expires: 1985-06-08
Abstract
No abstract record available.
Inventors
- 👤 Jackson D Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:20
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/12; B01J27/00; B01J27/02; B01J27/04; B01J27/14; B01J27/16; B01J27/18; B01J27/1802; B01J27/1817; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2078922A
Cited
US2389500A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-04 | 1971-12-04 | 1972-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-04 | 1975-12-04 | 1976-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-04 | 1979-12-04 | 1980-06-04 | $7700.00 | Window Closed / Lapsed |