US2671783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methines and process of making same
Assignee: BASF Schweiz AG
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Filing: 1951-03-26
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Granted: 1954-03-09
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Expires: 1971-03-26
Abstract
No abstract record available.
Inventors
- 👤 Wizinger Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:11
CPC Classifications
C; C07; C07D; C07D231/00; C07D231/02; C07D231/06; C09; C09B; C09B23/00; C09B23/0075; C09B23/10; C09B23/107; C09B23/14; C09B23/141; C09B23/145; G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/10; G03C1/12; G03C1/24; G03C1/26
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
7 words
A METHINE WHICH CORRESPONDS TO 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) | 1957-03-08 | 1957-09-07 | 1958-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-08 | 1961-09-07 | 1962-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-08 | 1965-09-07 | 1966-03-09 | $7700.00 | Window Closed / Lapsed |