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US2763680A
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Imino-dicarboxylic acids and functional derivatives thereof and process of making same
Assignee: BASF Schweiz AG
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Filing: 1953-12-15
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Granted: 1956-09-18
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Expires: 1973-12-15
Abstract
No abstract record available.
Inventors
- 👤 Sallmann Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:09
CPC Classifications
C; C07; C07C; C07C309/00; C07C309/01; C07C309/28; C07C309/45; C07C309/51; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03; Y10S516/04; Y10S516/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A COMPOUND OF THE GENERAL FORMULA
Claim 2
Dependent Claim
6 words
A COMPOUND OF THE GENERAL 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) | 1959-09-18 | 1960-03-19 | 1960-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-18 | 1964-03-19 | 1964-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-18 | 1968-03-19 | 1968-09-18 | $7700.00 | Window Closed / Lapsed |