US3686153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of linear high molecular weight compounds
Assignee: Individual
•
Filing: 1970-10-19
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Granted: 1972-08-22
•
Expires: 1990-10-19
Abstract
Abstract A HIGH MOLECULAR WEIGHT POLYMERIC COMPOUND REPRESENTED BY THE FOLLOWING RECURRING UNIT 1,3,3-TRI(CH3-),2-((-)CH2-CH(-X)-CH2-),R-INDOLIN-2-YL WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF A HYDROGEN ATOM, A HALOGEN ATOM, AND ALKYL GROUP HAVING 1 TO 4 CARBON ATOMS, -OR'' AND COOR, IN WHICH R'' IS AN ALKYL GROUP HAVING FROM 1 TO 4 CARBON ATOMS, IS DISCLOSED. A PROCESS FOR THE PREPARATION OF THESE COMPOUNDS IS ALSO DISCLOSED.
Inventors
- 👤 Hisatake Ono
- 👤 Chiaki Osada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:08
CPC Classifications
C; C08; C08F; C08F26/00; C08F26/06
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) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |