US3394174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amphoteric phenolic compounds containing amine groups and sulfonic acid or carboxylic acid groups
Assignee: Tanatex Chemical Corp
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Filing: 1967-05-02
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Granted: 1968-07-23
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Expires: 1987-05-02
Abstract
No abstract record available.
Inventors
- 👤 Feigin Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:47
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/48; A; A01; A01N; A01N37/00; A01N37/44; A01N41/00; A01N41/02; A01N41/04; A01N57/00; A01N57/18; A01N57/22; C07; C07C; C07C323/00; C07C323/50; C07C323/51; C07C323/52; C07D; C07D215/00; C07D215/02; C07D215/16; C07D215/20; C07D215/24; C07D215/26; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/3804; C07F9/3808; C09; C09B; C09B29/00; C09B29/10; C11D1/00; C11D1/88; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/02; Y10S516/03; Y10S516/05; Y10S516/06; Y10S516/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2763680A
Cited
US3230249A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-23 | 1972-01-22 | 1972-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-23 | 1976-01-22 | 1976-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-23 | 1980-01-22 | 1980-07-23 | $7700.00 | Window Closed / Lapsed |