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Patent US3463799A successfully refreshed from Google Patents.
US3463799A
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Dimethylamino - bis - (2 - hydroxyphenyl) sulfonic and carboxylic acid and metal chelates thereof
Assignee: Chemolimpex Magyar Vegyiaru Kulkereskedelmi Vallalat
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Filing: 1967-06-19
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Granted: 1969-08-26
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Expires: 1987-06-19
Abstract
No abstract record available.
Inventors
- 👤 Jeno Szava
- 👤 Magdolna Sarosi
- 👤 Rosa Totos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:08
CPC Classifications
C; C07; C07C; C07C229/00; C07C229/38; C05; C05D; C05D9/00; C05D9/02; C07F; C07F15/00; C07F15/02; C07F15/025; Y; Y10; Y10S; Y10S71/00; Y10S71/02
Claims Analysis
Total Claims: 0
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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) | 1972-08-25 | 1973-02-24 | 1973-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-25 | 1977-02-24 | 1977-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-25 | 1981-02-24 | 1981-08-26 | $7700.00 | Window Closed / Lapsed |