Patent DE79082C successfully refreshed from Google Patents.
US3751384A
Expired / Lapsed
US
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Organolithium-polyamine compositions
Assignee: Exxon Mobil Corp
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Filing: 1970-10-15
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Granted: 1973-08-07
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Expires: 1990-10-15
Abstract
Abstract GRAFT POLYMERS ARE PREPARED BY CONTACTING AN ANIONICALLY POLYMERIZABLE MONOMER SUCH AS BUTADIENE WITH A POLYMER-LI$TERTIARY CHELATING POLYAMINE COMPLEX SUCH AS POLYSTYRENE-LI$TETRAMETHYL ETHANEDIAMINE.
Inventors
- 👤 A Langer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:50
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/42; C08F4/44; C08F4/46; C08F4/48; C08F4/484; C07; C07F; C07F1/00; C07F1/02; C07F7/00; C07F7/02; C07F7/08; C07F7/0803; C07F7/0805; C07F7/081; C07F7/0825; C07F7/0827; C08C; C08C19/00; C08C19/26; C08F291/00; C08F36/00; C08F36/02; C08F36/04; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/06; C08G65/08; C08G65/10; C08G65/12; C08G65/26; C08G65/2642; C08G65/269; C08F210/00; C08F210/02; C08F210/16; C08F210/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |