US3763177A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bi-2-oxazoline and oxazine compounds derived from cyanoethylated poly-(ethylene and propylene) glycols
Assignee: Dow Chemical Co
•
Filing: 1971-03-29
•
Granted: 1973-10-02
•
Expires: 1991-03-29
Abstract
Abstract BI-2-OXAZOLINE AND OXAZINE COMPOSITIONS DERIVED FROM CYANOETHYLATED POLY (ETHYLENE AND PROPYLENE) GLYCOLS AND HAVING THE FORMULA: (=N-(CH(-R"))M-O-)>C-CH(-R)-CH(-R'')-O-(X)N-CH(-R'')-CH(-R)- C<(=N-(CH(-R"))M-O-) WHERE R, R'', AND R" CAN BE H OR ALKYL CONTAINING FROM 1 TO 4 CARBON ATOMS, WHERE X IS (C2H4O) OR (C2H6O), WHERE N IS A VALUE FROM 1 TO 50 INCLUSIVE AND WHERE M IS 2 OR 3.
Inventors
- 👤 D Tomalia
- 👤 D Sheetz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:06
CPC Classifications
C; C07; C07D; C07D263/00; C07D263/02; C07D263/08; C07D263/10; C07D263/14; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/5046; C08G65/00; C08G65/02; C08G65/32; C08G65/329; C08G65/333; C08G65/33303; C08G65/33306; C08G65/33365; C08G65/33368; C08G65/338; C08G73/00; C08G73/02; C08G73/0233
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |