US2822366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfonic acid derivatives and methods of making the same
Assignee: Boehme Fettchemie GmbH
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Filing: 1954-10-29
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Granted: 1958-02-04
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Expires: 1974-10-29
Abstract
No abstract record available.
Inventors
- 👤 Haas Hermann
- 👤 Gundel Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:11
CPC Classifications
C; C07; C07D; C07D277/00; C07D277/02; C07D277/20; C07D277/32; C07D277/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
COMPOUNDS HAVING A STRUCTURAL FORMULA SELECTED FROM THE GROUP CONSISTING OF
Claim 2
Dependent Claim
11 words
COMPOUNDS HAVING A STRUCTURAL FORMULA SELECTED FROM THE GROUP CONSISTING OF
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) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |